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Xu X, Jiao F, Liu J, Ma J, Lin D, Gong H, Yang Y, Lin N, Wu Q, Zhu Y, Qiu J, Zhang K, Zou C. Stability of gross primary productivity and its sensitivity to climate variability in China. FRONTIERS IN PLANT SCIENCE 2024; 15:1440993. [PMID: 39309176 PMCID: PMC11412862 DOI: 10.3389/fpls.2024.1440993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2024] [Accepted: 08/12/2024] [Indexed: 09/25/2024]
Abstract
Identifying the stability and sensitivity of land ecosystems to climate change is vital for exploring nature-based solutions. However, the underlying mechanisms governing ecosystem stability and sensitivity, especially in regions with overlapping ecological projects, remain unclear. based on Mann-Kendall, stability analysis method, and multiple regression method, this study quantified the stability and sensitivity of gross primary productivity (GPP) to climate variables [temperature, vapor pressure deficit (VPD), soil moisture, and radiation] in China from 1982 to 2019. Our findings revealed the following: (1) GPP demonstrated an increased trend with lower stability in Eastern regions, whereas a decreasing trend with higher stability was observed in Western and Southwest China. Notably, the stability of GPP was highest (74.58%) in areas with five overlapping ecological projects: Grain to Green, Natural Forest Resource Protection Project, Three-River Ecological Conservation and Restoration Project, Return Grazing to Grassland Project, and Three-North Shelter Forestation Project. (2) In regions with minimal or no overlapping ecological projects, temperature and radiation jointly dominated GPP variations. In contrast, water-related factors (VPD and soil moisture) significantly affected GPP in areas with multiple overlapping ecological projects. (3) In the southwestern and northeastern regions, GPP exhibited the highest sensitivity to climate change, whereas, in the eastern coastal areas and Tibet, GPP showed low sensitivity to climate change. In the Loess Plateau, where five ecological projects overlap extensively, carbon sinks primarily demonstrate a monotonic increasing trend, high stability, and low sensitivity to climate change. This study aimed to assess the stability of the land ecosystems and delineate their sensitivity to climate changes, thereby laying the groundwork for understanding ecosystem resilience.
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Affiliation(s)
- Xiaojuan Xu
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Fusheng Jiao
- School of Geography, Nanjing Normal University, Nanjing, China
| | - Jing Liu
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Jie Ma
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Dayi Lin
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Haibo Gong
- College of Urban, and Environmental Sciences, Peking University, Beijing, China
| | - Yue Yang
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Naifeng Lin
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Qian Wu
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Yingying Zhu
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Jie Qiu
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Kun Zhang
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
| | - Changxin Zou
- Ecological Protection and Restoration Center, Nanjing Institute of Environmental Sciences, MEE, Nanjing, China
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Yang J, Lu X, Liu Z, Tang X, Yu Q, Wang Y. Atmospheric drought dominates changes in global water use efficiency. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 934:173084. [PMID: 38735314 DOI: 10.1016/j.scitotenv.2024.173084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2023] [Revised: 05/06/2024] [Accepted: 05/07/2024] [Indexed: 05/14/2024]
Abstract
Water use efficiency (defined as the ratio of gross primary productivity to plant transpiration, WUET) describes the tradeoff between ecosystem carbon uptake and water loss. However, a comprehensive understanding of the impact of soil and atmospheric moisture deficits on WUET across large regions remains incomplete. Solar-induced chlorophyll fluorescence (SIF) serves as an effective signal for measuring both terrestrial vegetation photosynthesis and transpiration, thereby enabling a rapid response to changes in the physiological status of plants under water stress. The objectives of this study were to: 1) mechanistically calculate WUET using top-of-canopy SIF data and meteorological information by using the revised mechanistic light response model and the Penman-Monteith equation; 2) analyze the effects of atmospheric and soil water deficits on SIF-based WUET by using decoupled soil water content (SWC) and vapor pressure deficit (VPD); 3) evaluate estimated SIF-based WUET against data from 28 eddy covariance (EC) flux sites representing eight different vegetation types. Results indicated that the model performed well in ecosystems with dense canopies, explaining 56 % of the daily variability in EC tower-based WUET. For the years 2019-2020, the global average WUET derived from SIF was 3.49 g C/kg H2O. Notably, this value exceeded 4 g C/kg H2O in tropical rainforest regions near the equator and went beyond 5 g C/kg H2O in the high-latitude regions of the Northern Hemisphere. We found that SIF-based WUET was primarily influenced by VPD rather than SWC in over 90 % of the global vegetated area. The model used in this study increased our ability to mechanistically estimate WUET with SIF at the global scale, thereby highlighting the significance of the global response of SIF-based WUET to water stress, and also enhancing our understanding of the water‑carbon cycle in terrestrial ecosystems.
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Affiliation(s)
- Jingjing Yang
- The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoliang Lu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Zhunqiao Liu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Xianhui Tang
- The Research Center of Soil and Water Conservation and Ecological Environment, Chinese Academy of Sciences and Ministry of Education, Yangling, Shaanxi 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Sciences and Ministry of Water Resources, Yangling, Shaanxi 712100, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Qiang Yu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Yunfei Wang
- School of Water Conservancy and Transportation, Zhengzhou University, Zhengzhou, Henan 450001, China.
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Li Y, Yuan X, Zhuang Q. An optimal ensemble of the CoLM for simulating the carbon and water fluxes over typical forests in China. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 356:120740. [PMID: 38520853 DOI: 10.1016/j.jenvman.2024.120740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 03/14/2024] [Accepted: 03/19/2024] [Indexed: 03/25/2024]
Abstract
Stomatal conductance (gs) and compensatory water uptake (CWU) are crucial processes in land surface models, as they directly influence the exchange of carbon and water fluxes between terrestrial ecosystems and the atmosphere. In this study, we integrated a new stomatal scheme derived from optimal stomatal theory (Medlyn's gs model), and an empirical CWU scheme into the Common Land Model (CoLM). Assessing the impacts on modeling gross primary productivity (GPP) and latent flux (LE) through observations obtained from eddy covariance (EC) measurements at three forest sites in China. Our results show that replacing the Ball-Berry's gs model (termed BB) with Medlyn's gs model (termed MED) did not bring about significant changes (had neutral impacts) in the performance of CoLM simulations at three forest sites. Considering the climate factors of annual mean precipitation to optimize key fitting parameters in gs exhibited improvement in model simulations. The average coefficient of determination (R2) achieved to 0.65 for GPP and LE at three sites, and the normalized root mean squared error (NRMSE) decreased from 0.83 to 0.77 at those sites. Besides, incorporating CWU into the model improved its performance. The R2 increased to 0.84 and RMSE decreased to 4.84 μmol m-2 s-1 for GPP, and the R2 increased to 0.62 and RMSE decreased to 55.64 W m-2 for LE. Therefore, modifying the model process of both contributed more to enhancing the model simulations than relying solely on one of these functions. Our study highlights that the response of plant functional types (PFTs) to water stress can be effectively represented in gs models when coupled with biochemical capacity to quantify carbon and water fluxes in forest ecosystems or other ecosystems.
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Affiliation(s)
- Yuzhen Li
- School of Emergency Management, Xihua University, Chengdu 610039, China
| | - Xiuliang Yuan
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi 830011, China.
| | - Qingwei Zhuang
- State Key Laboratory of Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University, Wuhan 430079, China
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Williams E, Funk C, Peterson P, Tuholske C. High resolution climate change observations and projections for the evaluation of heat-related extremes. Sci Data 2024; 11:261. [PMID: 38429277 PMCID: PMC11422495 DOI: 10.1038/s41597-024-03074-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 02/14/2024] [Indexed: 03/03/2024] Open
Abstract
The Climate Hazards Center Coupled Model Intercomparison Project Phase 6 climate projection dataset (CHC-CMIP6) was developed to support the analysis of climate-related hazards, including extreme humid heat and drought conditions, over the recent past and in the near-future. Global daily high resolution (0.05°) grids of the Climate Hazards InfraRed Temperature with Stations temperature product, the Climate Hazards InfraRed Precipitation with Stations precipitation product, and ERA5-derived relative humidity form the basis of the 1983-2016 historical record, from which daily Vapor Pressure Deficits (VPD) and maximum Wet Bulb Globe Temperatures (WBGTmax) were derived. Large CMIP6 ensembles from the Shared Socioeconomic Pathway 2-4.5 and SSP 5-8.5 scenarios were then used to develop high resolution daily 2030 and 2050 'delta' fields. These deltas were used to perturb the historical observations, thereby generating 0.05° 2030 and 2050 projections of daily precipitation, temperature, relative humidity, and derived VPD and WBGTmax. Finally, monthly counts of frequency of extremes for each variable were derived for each time period.
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Affiliation(s)
- Emily Williams
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA.
- Sierra Nevada Research Institute, University of California, Merced, CA, 95343, USA.
| | - Chris Funk
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA.
| | - Pete Peterson
- Climate Hazards Center, University of California, Santa Barbara, CA, 93106, USA
| | - Cascade Tuholske
- Department of Earth Sciences, Montana State University, Bozeman, MT, 59717, USA
- Geospatial Core Facility, Montana State University, Bozeman, MT, 59717, USA
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Liu Y, Wang P, Elberling B, Westergaard-Nielsen A. Drivers of contemporary and future changes in Arctic seasonal transition dates for a tundra site in coastal Greenland. GLOBAL CHANGE BIOLOGY 2024; 30:e17118. [PMID: 38273573 DOI: 10.1111/gcb.17118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/06/2023] [Accepted: 12/12/2023] [Indexed: 01/27/2024]
Abstract
Climate change has had a significant impact on the seasonal transition dates of Arctic tundra ecosystems, causing diverse variations between distinct land surface classes. However, the combined effect of multiple controls as well as their individual effects on these dates remains unclear at various scales and across diverse land surface classes. Here we quantified spatiotemporal variations of three seasonal transition dates (start of spring, maximum normalized difference vegetation index (NDVImax ) day, end of fall) for five dominating land surface classes in the ice-free Greenland. Using a distributed snow model, structural equation modeling, and a random forest model, based on ground observations and remote sensing data, we assessed the indirect and direct effects of climate, snow, and terrain on seasonal transition dates. We then presented new projections of likely changes in seasonal transition dates under six future climate scenarios. The coupled climate, snow cover, and terrain conditions explained up to 61% of seasonal transition dates across different land surface classes. Snow ending day played a crucial role in the start of spring and timing of NDVImax . A warmer June and a decline in wind could advance the NDVImax day. Increased precipitation and temperature during July-August are the most important for delaying the end of fall. We projected that a 1-4.5°C increase in temperature and a 5%-20% increase in precipitation would lengthen the spring-to-fall period for all five land surface classes by 2050, thus the current order of spring-to-fall lengths for the five land surface classes could undergo notable changes. Tall shrubs and fens would have a longer spring-to-fall period under the warmest and wettest scenario, suggesting a competitive advantage for these vegetation communities. This study's results illustrate controls on seasonal transition dates and portend potential changes in vegetation composition in the Arctic under climate change.
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Affiliation(s)
- Yijing Liu
- Department for Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
- Center for Permafrost, CENPERM, University of Copenhagen, Copenhagen, Denmark
| | - Peiyan Wang
- Center for Permafrost, CENPERM, University of Copenhagen, Copenhagen, Denmark
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, China
| | - Bo Elberling
- Department for Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
- Center for Permafrost, CENPERM, University of Copenhagen, Copenhagen, Denmark
| | - Andreas Westergaard-Nielsen
- Department for Geosciences and Natural Resource Management, University of Copenhagen, Copenhagen, Denmark
- Center for Permafrost, CENPERM, University of Copenhagen, Copenhagen, Denmark
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Hong S, Deng H, Zheng Z, Deng Y, Chen X, Gao L, Chen Y, Liu M. The influence of variations in actual evapotranspiration on drought in China's Southeast River basin. Sci Rep 2023; 13:21336. [PMID: 38049499 PMCID: PMC10696048 DOI: 10.1038/s41598-023-48663-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2023] [Accepted: 11/29/2023] [Indexed: 12/06/2023] Open
Abstract
Revealing changes in actual evapotranspiration is essential to understanding regional extreme hydrological events (e.g., droughts). This study utilized the Global Land Evaporation Amsterdam Model (GLEAM) to analyse the spatial and temporal characteristics of actual evapotranspiration over 40 years in the Southeast River basin of China. The relationship between changes in actual evapotranspiration and the drought index was quantified. The results indicated a significant increase in actual evapotranspiration in the Southeast River basin from 1981 to 2020 (2.51 mm/year, p < 0.01). The actual evapotranspiration components were dominated by vegetation transpiration (73.45%) and canopy interception (18.26%). The actual evapotranspiration was closely related to the normalised difference vegetation index (r = 0.78, p < 0.01), and vegetation changes could explain 10.66% of the increase of actual evapotranspiration in the Southeast River basin since 2000. Meanwhile, actual evapotranspiration and standardised precipitation evapotranspiration index (SPEI) showed a highly significant negative spatial correlation, with a Moran's I index of - 0.513. The rise in actual evapotranspiration is an important trigger factor for seasonal droughts in the region. Therefore, these results help deepen the understanding of hydro-climatic process changes in the southeastern coastal region of China.
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Affiliation(s)
- Sheng Hong
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Haijun Deng
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China.
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China.
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China.
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China.
| | - Zhouyao Zheng
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Yu Deng
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Xingwei Chen
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Lu Gao
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Ying Chen
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
| | - Meibing Liu
- Institute of Geography, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Engineering Research Centre for Monitoring and Assessing Terrestrial Disasters, Fujian Normal University, Fuzhou, 350117, China
- Key Laboratory of Humid Subtropical Eco-Geographical Processes of Ministry of Education, School of Geographical Sciences, Fujian Normal University, Fuzhou, 350117, China
- Fujian Provincial Key Laboratory for Plant Eco-Physiology, Fujian Normal University, Fuzhou, 350117, China
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Bai Y, Liu M, Guo Q, Wu G, Wang W, Li S. Diverse responses of gross primary production and leaf area index to drought on the Mongolian Plateau. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 902:166507. [PMID: 37619736 DOI: 10.1016/j.scitotenv.2023.166507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/03/2023] [Revised: 08/04/2023] [Accepted: 08/21/2023] [Indexed: 08/26/2023]
Abstract
Drought is a crucial factor regulating vegetation growth on the Mongolian Plateau (MP). Previous studies of drought effects on the MP have mainly concentrated on drought characterization, while the response of vegetation to drought remains unclear. To close this knowledge gap, we examined the response of MP vegetation to drought in terms of gross primary production (GPP) and leaf area index (LAI) from 1982 to 2018. Our findings show that intra-seasonally the frequency of drought occurrence in autumn had a greater impact on GPP (relative importance over 70 %), while the intensity of drought was more influential for LAI (relative importance approximately 60 %). Inter-seasonally, summer droughts had the most pronounced effect on vegetation (with median standardized anomalies of -0.72 for GPP and -0.4 for LAI, respectively). Additionally, we found that meteorological drought was more consistent with atmospheric aridity (high vapor pressure deficit) than soil drought (low soil moisture). This study advances knowledge of vegetation's susceptibility to climate extremes and improves the precision of predicting ecosystem response to climate change.
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Affiliation(s)
- Yu Bai
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; University of Chinese Academy of Sciences, Beijing 100190, China
| | - Menghang Liu
- University of Chinese Academy of Sciences, Beijing 100190, China; Key Laboratory of Regional Sustainable Development Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
| | - Qun Guo
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China
| | - Genan Wu
- Institute of Spacecraft Application System Engineering, China Academy of Space Technology, Beijing 100094, China
| | - Weimin Wang
- Shenzhen Ecological Environmental Monitoring Center of Guangdong Province, Shenzhen 518049, China; Guangdong Greater Bay Area, Change and Comprehensive Treatment of Regional Ecology and Environment, National Observation and Research Station, Shenzhen 523722, China; State Environmental Protection Scientific Observation and Research Station for Ecology and Environment of Rapid Urbanization Region, Shenzhen 518000, China
| | - Shenggong Li
- Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China; College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100190, China.
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8
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Chen N, Zhang Y, Yuan F, Song C, Xu M, Wang Q, Hao G, Bao T, Zuo Y, Liu J, Zhang T, Song Y, Sun L, Guo Y, Zhang H, Ma G, Du Y, Xu X, Wang X. Warming-induced vapor pressure deficit suppression of vegetation growth diminished in northern peatlands. Nat Commun 2023; 14:7885. [PMID: 38036495 PMCID: PMC10689446 DOI: 10.1038/s41467-023-42932-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Accepted: 10/26/2023] [Indexed: 12/02/2023] Open
Abstract
Recent studies have reported worldwide vegetation suppression in response to increasing atmospheric vapor pressure deficit (VPD). Here, we integrate multisource datasets to show that increasing VPD caused by warming alone does not suppress vegetation growth in northern peatlands. A site-level manipulation experiment and a multiple-site synthesis find a neutral impact of rising VPD on vegetation growth; regional analysis manifests a strong declining gradient of VPD suppression impacts from sparsely distributed peatland to densely distributed peatland. The major mechanism adopted by plants in response to rising VPD is the "open" water-use strategy, where stomatal regulation is relaxed to maximize carbon uptake. These unique surface characteristics evolve in the wet soil‒air environment in the northern peatlands. The neutral VPD impacts observed in northern peatlands contrast with the vegetation suppression reported in global nonpeatland areas under rising VPD caused by concurrent warming and decreasing relative humidity, suggesting model improvement for representing VPD impacts in northern peatlands remains necessary.
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Affiliation(s)
- Ning Chen
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China
| | - Yifei Zhang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Fenghui Yuan
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
- Department of Soil, Water, and Climate, University of Minnesota, Saint Paul, MN, 55108, USA
| | - Changchun Song
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China.
- School of Hydraulic Engineering, Dalian University of Technology, 116024, Dalian, China.
| | - Mingjie Xu
- College of Agronomy, Shenyang Agricultural University, 110866, Shenyang, China
| | - Qingwei Wang
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China
| | - Guangyou Hao
- CAS Key Laboratory of Forest Ecology and Management, Institute of Applied Ecology, Chinese Academy of Sciences, 110016, Shenyang, China
| | - Tao Bao
- Key Laboratory of Regional Climate-Environment for Temperate East Asia, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China
| | - Yunjiang Zuo
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Jianzhao Liu
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
- College of Surveying and Exploration Engineering, Jilin Jianzhu University, 130018, Changchun, China
| | - Tao Zhang
- College of Agronomy, Shenyang Agricultural University, 110866, Shenyang, China
| | - Yanyu Song
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Li Sun
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Yuedong Guo
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Hao Zhang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Guobao Ma
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Yu Du
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China
| | - Xiaofeng Xu
- Biology Department, San Diego State University, San Diego, 92182, USA.
| | - Xianwei Wang
- Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, 130102, Changchun, China.
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Zhong Z, He B, Wang YP, Chen HW, Chen D, Fu YH, Chen Y, Guo L, Deng Y, Huang L, Yuan W, Hao X, Tang R, Liu H, Sun L, Xie X, Zhang Y. Disentangling the effects of vapor pressure deficit on northern terrestrial vegetation productivity. SCIENCE ADVANCES 2023; 9:eadf3166. [PMID: 37556542 PMCID: PMC10411893 DOI: 10.1126/sciadv.adf3166] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2022] [Accepted: 07/07/2023] [Indexed: 08/11/2023]
Abstract
The impact of atmospheric vapor pressure deficit (VPD) on plant photosynthesis has long been acknowledged, but large interactions with air temperature (T) and soil moisture (SM) still hinder a complete understanding of the influence of VPD on vegetation production across various climate zones. Here, we found a diverging response of productivity to VPD in the Northern Hemisphere by excluding interactive effects of VPD with T and SM. The interactions between VPD and T/SM not only offset the potential positive impact of warming on vegetation productivity but also amplifies the negative effect of soil drying. Notably, for high-latitude ecosystems, there occurs a pronounced shift in vegetation productivity's response to VPD during the growing season when VPD surpasses a threshold of 3.5 to 4.0 hectopascals. These results yield previously unknown insights into the role of VPD in terrestrial ecosystems and enhance our comprehension of the terrestrial carbon cycle's response to global warming.
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Affiliation(s)
- Ziqian Zhong
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, 100875 Beijing, China
| | - Bin He
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, 100875 Beijing, China
| | - Ying-Ping Wang
- CSIRO Environment, Private Bag 1, Aspendale, Victoria, Australia
| | - Hans W. Chen
- Department of Space, Earth and Environment, Division of Geoscience and Remote Sensing, Chalmers University of Technology, SE-412 96 Gothenburg, Sweden
| | - Deliang Chen
- Regional Climate Group, Department of Earth Sciences, University of Gothenburg, S-40530 Gothenburg, Sweden
| | - Yongshuo H. Fu
- College of Water Sciences, Beijing Normal University, 100875 Beijing, China
| | - Yaning Chen
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011 Urumqi, China
| | - Lanlan Guo
- School of Geography, Beijing Normal University, 100875 Beijing, China
| | - Ying Deng
- State Key Laboratory of Vegetation and Environmental Change, Institute of Botany, Chinese Academy of Sciences, No. 20 Nanxincun, Xiangshan, 100093 Beijing, China
| | - Ling Huang
- College of Urban and Environmental Sciences, Peking University, 100871 Beijing, China
| | - Wenping Yuan
- School of Atmospheric Sciences, Sun Yat-Sen University, 510275 Guangzhou, China
| | - Xingmin Hao
- State Key Laboratory of Desert and Oasis Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, 830011 Urumqi, China
| | - Rui Tang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, 100875 Beijing, China
| | - Huiming Liu
- Ministry of Ecology and Environment Center for Satellite Application on Ecology and Environment, 100094 Beijing, China
| | - Liying Sun
- Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, 100101 Beijing, China
| | - Xiaoming Xie
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, 100875 Beijing, China
| | - Yafeng Zhang
- State Key Laboratory of Earth Surface Processes and Resource Ecology, Faculty of Geographical Science, Beijing Normal University, 100875 Beijing, China
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10
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Tong B, Guo J, Xu H, Wang Y, Li H, Bian L, Zhang J, Zhou S. Effects of soil moisture, net radiation, and atmospheric vapor pressure deficit on surface evaporation fraction at a semi-arid grass site. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 849:157890. [PMID: 35944641 DOI: 10.1016/j.scitotenv.2022.157890] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 07/31/2022] [Accepted: 08/04/2022] [Indexed: 06/15/2023]
Abstract
Surface energy partitioning is one of the most important aspects of the land-atmosphere coupling. The objective of this study is to examine how soil moisture (SM) and atmospheric conditions (net radiation, Rn and vapor pressure deficit, VPD) affect surface evaporation fraction (EF, determined by LE/(LE + H), where LE and H are latent and sensible heat flux, respectively) with measurements at a semi-arid grass site in China during the mid-growing season, 2020. The three factors (SM, Rn, and VPD) were divided into different levels, and then their effects on EF were investigated qualitatively using a combinatorial stratification method and quantificationally using a path analysis. Generally, the results indicated that the effect of one factor of SM, Rn and VPD on EF was influenced by the other two factors. EF tended to increase with increasing SM. Increased VPD (Rn) enhanced (weakened) the SM-EF relationship. When soil was dry, EF tended to decrease with increasing VPD; when soil was wet, EF initially levelled off and then decreased with increasing VPD. Increased Rn enhanced (weakened) the positive (negative) effect of VPD on EF when soil was wet (dry). In terms of Rn effect, EF tended to decrease as Rn increases. Further, path analysis suggested that SM, Rn, and VPD not only directly affected EF, but also indirectly affected EF, mainly through canopy conductance (Gs) and temperature difference between land surface and air (∆T). The direct effect of SM accounted for >50 % of its total effect on EF, while the total effects of Rn and VPD on EF were dominated by their indirect effects. These observational evidences may have implications for improving representation of land-atmosphere coupling in atmospheric general circulation models over the semi-arid regions covered by grass.
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Affiliation(s)
- Bing Tong
- State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Jianping Guo
- State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China.
| | - Hui Xu
- State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Yinjun Wang
- State Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing, China
| | - Huirong Li
- Xilinhot National Climatic Observatory, Xilinhot, China
| | - Lingen Bian
- Chinese Academy of Meteorological Sciences, Beijing, China
| | - Jian Zhang
- Hubei Subsurface Multi-scale Imaging Key Laboratory, Institute of Geophysics and Geomatics, China University of Geosciences, Wuhan, China
| | - Shenghui Zhou
- Key Laboratory of Geospatial Technology for the Middle and Lower Yellow River Regions (Henan University), Ministry of Education, Kaifeng, China
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11
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Dong J, Li L, Li Y, Yu Q. Inter-comparisons of mean, trend and interannual variability of global terrestrial gross primary production retrieved from remote sensing approach. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 822:153343. [PMID: 35101488 DOI: 10.1016/j.scitotenv.2022.153343] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/18/2022] [Accepted: 01/19/2022] [Indexed: 06/14/2023]
Abstract
Many models were established to estimate gross primary production (GPP) of terrestrial ecosystems based on vegetation light use efficiency (LUE). Analysing the spatial-temporal variations of global terrestrial GPP became capable with the increasing length of satellite data. Previous studies mainly focused on evaluating the model performance or investigating the mean, the temporal trend or the interannual variability (IAV) of global terrestrial GPP based on one single or multiple models, which is difficult to identify common merits of a same cluster of GPP models. This study compared eight satellite-based LEU-type GPP models in capturing the mean, temporal trend and IAV of global GPP concurrently. Our results showed that current common-used models based on LUE methodology estimated global mean GPP ranging from 128.5 to 158.3 Pg C year-1, and global mean IAV ranging from 0.1 to 0.35, but the trends ranging from -0.22 to 0.51 Pg C year-1. In the context of plant functional types (PFTs) and climate classifications, no consistent feature for either of the mean, trend or IAV of GPP are identified among eight models. Future studies should integrate the latest advances on the mechanisms and associated environmental factors into models and consolidate performance of models to better understand the evolutions of terrestrial ecosystem functioning.
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Affiliation(s)
- Jiaqi Dong
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling 712100, China
| | - Longhui Li
- Key Laboratory of Virtual Geographical Environment of Ministry of Education, Nanjing Normal University, Nanjing 210023, China; Jiangsu Centre for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China; School of Geographical Sciences, Nanjing Normal University, Nanjing 210023, China.
| | - Yuzhen Li
- School of Emergency Management, Xihua University, Chengdu 610039, China
| | - Qiang Yu
- State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau, Northwest A & F University, Yangling 712100, China.
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