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Bernardino AF, Queiroz HM, Nobrega GN, Coppo GC, Sanders CJ, Silva AEB, Kauffman JB, Costa RF, Pacheco CF, Vassoler A, Pereira AP, Ruiz F, Ferreira TO. Soil greenhouse gas fluxes partially reduce the net gains in carbon sequestration in mangroves of the Brazilian Amazon. ENVIRONMENTAL RESEARCH 2024; 263:120102. [PMID: 39366443 DOI: 10.1016/j.envres.2024.120102] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2024] [Revised: 09/26/2024] [Accepted: 10/02/2024] [Indexed: 10/06/2024]
Abstract
There is interest in assessing the potential climate mitigation benefit of coastal wetlands based on the balance between their greenhouse gas (GHG) emissions and carbon sequestration. Here we investigated soil GHG fluxes (CO2 and CH4) on mangroves of the Brazilian Amazon coast, and across common land use impacts including shrimp farms and a pasture. We found greater methane fluxes near the Amazon River mouth (1439 to 3312 μg C m-2 h-1), which on average are equivalent to 37% of mangrove C sequestration in the region. Soil CO2 fluxes were predominant in mangrove forests to the East of the Amazon Delta. Land use change shifted mangroves from C sinks (mean sequestration of 12.2 ± 1.4 Mg CO2e ha-1 yr-1) to net GHG sources (mean loss of 8.0 ± 3.3 Mg CO2e ha-1 yr-1). Our data suggests that mangrove forests in the Amazon can aid decreasing the net annual emissions in the Brazilian forest sector in 9.7 ± 0.8 Tg CO2e yr-1 through forest conservation and avoided deforestation.
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Affiliation(s)
- Angelo F Bernardino
- Departamento de Oceanografia, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil.
| | - Hermano M Queiroz
- Departamento de Geografia, Universidade de São Paulo, São Paulo, SP, Brazil
| | - Gabriel N Nobrega
- Universidade Federal do Ceará, Departamento de Ciências do Solo, Fortaleza, CE, Brazil
| | - Gabriel C Coppo
- Departamento de Oceanografia, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil
| | - Christian J Sanders
- National Marine Science Centre, Faculty of Science and Engineering, Southern Cross University, Coffs Harbour, NSW, 2450, Australia
| | - Antonio E B Silva
- Escola Superior de Agricultura Luiz Queiroz, Universidade de São Paulo (ESALQ/USP), Departamento de Ciência do Solo, Piracicaba, SP, Brazil
| | - J Boone Kauffman
- Department of Fisheries, Wildlife and Conservation Sciences, Oregon State University, Corvallis, OR, 97331, USA
| | - Rodolfo F Costa
- Escola Superior de Agricultura Luiz Queiroz, Universidade de São Paulo (ESALQ/USP), Departamento de Ciência do Solo, Piracicaba, SP, Brazil
| | - Carla F Pacheco
- Departamento de Oceanografia, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil
| | - André Vassoler
- Departamento de Oceanografia, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil
| | - Araiene P Pereira
- Departamento de Oceanografia, Universidade Federal do Espírito Santo (UFES), Vitória, ES, Brazil
| | - Francisco Ruiz
- Escola Superior de Agricultura Luiz Queiroz, Universidade de São Paulo (ESALQ/USP), Departamento de Ciência do Solo, Piracicaba, SP, Brazil
| | - Tiago O Ferreira
- Escola Superior de Agricultura Luiz Queiroz, Universidade de São Paulo (ESALQ/USP), Departamento de Ciência do Solo, Piracicaba, SP, Brazil; Center for Carbon Research in Tropical Agriculture (CCARBON) - University of São Paulo, Piracicaba, São Paulo, 13416-900, Brazil
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Bergagna L, Lovrich G, Riccialdelli L, Sahade R. Blue carbon storage in a sub-Antarctic marine protected area. Sci Rep 2024; 14:20642. [PMID: 39232073 PMCID: PMC11375017 DOI: 10.1038/s41598-024-71319-0] [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: 05/15/2024] [Accepted: 08/27/2024] [Indexed: 09/06/2024] Open
Abstract
High-latitude ecosystems have been overlooked in carbon budgets, which traditionally focus on mangroves, salt marshes, and seagrasses. The benthic assemblages and their Nature Contributions to People in Namuncurá - Burdwood Bank I and II, two offshore sub-Antarctic Marine Protected Areas (MPAs), are the conservation values. Here we show that the carbon reservoirs of these MPAs can be greater than those of their Antarctic counterparts, which, together with their extension, emphasize the need to maintain their protected status. Considering their total area, these MPAs stored in biomass 52,085.78 Mg C, corresponding 34,964.16 Mg to organic carbon (OC) and 17,121.62 Mg to inorganic carbon (IC). Surficial sediments stored 933,258,336 Mg C with 188,089,629 Mg of OC and 745,168,707 Mg of IC. However, when accounting for CO2 production through CaCO3 precipitation, the IC fractions decrease to 3,150.37 Mg C and 137,111,042 Mg C for biomass and sediments, respectively. We assume low sediment deposition due to the oceanic location, as direct sedimentation rates for these areas are unavailable. Most blue carbon assessments have focused solely on OC, despite the formation of CaCO3 releases CO2, decreasing net carbon storage. We compared various approaches for incorporating carbonates into carbon estimations. These results underscore the importance of including IC into carbon assessments and highlights the importance of sub-Antarctic benthic ecosystems as nature-based solutions to climate change.
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Affiliation(s)
- Lucía Bergagna
- Centro Austral de Investigaciones Científicas (CADIC) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ushuaia, Tierra del Fuego, Argentina.
| | - Gustavo Lovrich
- Centro Austral de Investigaciones Científicas (CADIC) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ushuaia, Tierra del Fuego, Argentina
| | - Luciana Riccialdelli
- Centro Austral de Investigaciones Científicas (CADIC) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Ushuaia, Tierra del Fuego, Argentina
| | - Ricardo Sahade
- Instituto de Diversidad y Ecología Animal (IDEA) - Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Córdoba, Argentina.
- Facultad de Ciencias Exactas Físicas y Naturales (FCEFyN) - Universidad Nacional de Córdoba (UNC), Córdoba, Argentina.
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Nuyts S, Duarte de Paula Costa M, Macreadie PI, Trevathan-Tackett SM. A decision support tool to help identify blue carbon sites for restoration. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2024; 367:122006. [PMID: 39094414 DOI: 10.1016/j.jenvman.2024.122006] [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: 05/23/2024] [Revised: 07/24/2024] [Accepted: 07/26/2024] [Indexed: 08/04/2024]
Abstract
Blue carbon ecosystems (BCEs), such as mangroves, saltmarshes, and seagrasses, are important nature-based solutions for climate change mitigation and adaptation but are threatened by degradation. Effective BCE restoration requires strategic planning and site selection to optimise outcomes. We developed a Geographic Information System (GIS)-based multi-criteria decision support tool to identify suitable areas for BCE restoration along the 2512 km-long coastline of Victoria, Australia. High-resolution spatial data on BCE distribution, coastal geomorphology, hydrodynamics, and land tenure were integrated into a flexible spatial model that distinguishes between passive and active restoration suitability. The tool was applied to identify high-priority locations for mangrove, saltmarsh, and seagrass restoration across different scenarios. Results indicate substantial potential for BCE restoration in Victoria, with 33,253 ha of suitable area identified, mostly (>97%) on public land, which aligned with the selection criteria used in the tool. Restoration opportunities are concentrated in bays and estuaries where historical losses have been significant. The mapped outputs provide a decision-support framework for regional restoration planning, while the tool itself can be adapted to other geographies. By integrating multiple spatial criteria and distinguishing between passive and active restoration, our approach offers a new method for targeting BCE restoration and informing resource allocation. The identified restoration potential will also require collaboration with coastal managers and communities, and consideration of socio-economic factors. With further refinements, such as incorporating multi-criteria decision analysis techniques, GIS-based tools can help catalyse strategic blue carbon investments and contribute to climate change mitigation and adaptation goals at different spatial scales. This study highlights the value of spatial identification for BCE restoration and provides a transferable framework for other regions.
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Affiliation(s)
- Siegmund Nuyts
- Deakin Marine Research and Innovation Centre, School of Life and Environmental Science, Deakin University, Burwood, VIC, Australia.
| | - Micheli Duarte de Paula Costa
- Deakin Marine Research and Innovation Centre, School of Life and Environmental Science, Deakin University, Burwood, VIC, Australia; Biosciences and Food Technology Discipline, School of Science, RMIT University, Melbourne, VIC, Australia
| | - Peter I Macreadie
- Deakin Marine Research and Innovation Centre, School of Life and Environmental Science, Deakin University, Burwood, VIC, Australia; Biosciences and Food Technology Discipline, School of Science, RMIT University, Melbourne, VIC, Australia
| | - Stacey M Trevathan-Tackett
- Deakin Marine Research and Innovation Centre, School of Life and Environmental Science, Deakin University, Burwood, VIC, Australia; Biosciences and Food Technology Discipline, School of Science, RMIT University, Melbourne, VIC, Australia
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Hu M, Sardans J, Sun D, Yan R, Wu H, Ni R, Peñuelas J. Microbial diversity and keystone species drive soil nutrient cycling and multifunctionality following mangrove restoration. ENVIRONMENTAL RESEARCH 2024; 251:118715. [PMID: 38490631 DOI: 10.1016/j.envres.2024.118715] [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: 11/26/2023] [Revised: 02/28/2024] [Accepted: 03/12/2024] [Indexed: 03/17/2024]
Abstract
Vegetation restoration exerts transformative effects on nutrient cycling, microbial communities, and ecosystem functions. While extensive research has been conducted on the significance of mangroves and their restoration efforts, the effectiveness of mangrove restoration in enhancing soil multifunctionality in degraded coastal wetlands remains unclear. Herein, we carried out a field experiment to explore the impacts of mangrove restoration and its chronosequence on soil microbial communities, keystone species, and soil multifunctionality, using unrestored aquaculture ponds as controls. The results revealed that mangrove restoration enhanced soil multifunctionality, with these positive effects progressively amplifying over the restoration chronosequence. Furthermore, mangrove restoration led to a substantial increase in microbial diversity and a reshaping of microbial community composition, increasing the relative abundance of dominant phyla such as Nitrospirae, Deferribacteres, and Fusobacteria. Soil multifunctionality exhibited positive correlations with microbial diversity, suggesting a link between variations in microbial diversity and soil multifunctionality. Metagenomic screening demonstrated that mangrove restoration resulted in a simultaneous increase in the abundance of nitrogen (N) related genes, such as N fixation (nirD/H/K), nitrification (pmoA-amoA/B/C), and denitrification (nirK, norB/C, narG/H, napA/B), as well as phosphorus (P)-related genes, including organic P mineralization (phnX/W, phoA/D/G, phnJ/N/P), inorganic P solubilization (gcd, ppx-gppA), and transporters (phnC/D/E, pstA/B/C/S)). The relationship between the abundance of keystone species (such as phnC/D/E) and restoration-induced changes in soil multifunctionality indicates that mangrove restoration enhances soil multifunctionality through an increase in the abundance of keystone species associated with N and P cycles. Additionally, it was observed that changes in microbial community and multifunctionality were largely associated with shifts in soil salinity. These findings demonstrate that mangrove restoration positively influences soil multifunctionality and shapes nutrient dynamics, microbial communities, and overall ecosystem resilience. As global efforts continue to focus on ecosystem restoration, understanding the complexity of mangrove-soil interactions is critical for effective nutrient management and mangrove conservation.
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Affiliation(s)
- Minjie Hu
- Key Laboratory of Humid Sub-tropical Eco-geographical Processes of Ministry of Education, Fujian Normal University, Fuzhou, 350007, China; School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China.
| | - Jordi Sardans
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193, Barcelona, Catalonia, Spain
| | - Dongyao Sun
- School of Geography Science and Geomatics Engineering, Suzhou University of Science and Technology, Suzhou, 215009, China.
| | - Ruibing Yan
- School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Hui Wu
- School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Ranxu Ni
- School of Geographical Sciences, Fujian Normal University, Fuzhou, 350007, China
| | - Josep Peñuelas
- CSIC, Global Ecology Unit CREAF-CSIC-UAB, Bellaterra, 08193, Barcelona, Catalonia, Spain; CREAF, Cerdanyola del Vallès, 08193, Barcelona, Catalonia, Spain
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Ohtsuka T, Umnouysin S, Suchewaboripont V, Yimatsa N, Rodtassana C, Kida M, Iimura Y, Yoshitake S, Fujitake N, Poungparn S. Biomass recovery of coastal young mangrove plantations in Central Thailand. Sci Rep 2024; 14:11359. [PMID: 38762530 PMCID: PMC11102487 DOI: 10.1038/s41598-024-61979-3] [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: 01/20/2024] [Accepted: 05/13/2024] [Indexed: 05/20/2024] Open
Abstract
Around one-third of the world's most carbon-rich ecosystems, mangrove forests, have already been destroyed in Thailand owing to coastal development and aquaculture. Improving these degraded areas through mangrove plantations can restore various coastal ecosystem services, including CO2 absorption and protection against wave action. This study examines the biomass of three coastal mangrove plantations (Avicennia alba) of different ages in Samut Prakarn province, Central Thailand. Our aim was to understand the forest biomass recovery during the early stages of development, particularly fine root biomass expansion. In the chronosequence of the mangrove plantations, woody biomass increased by 40% over four years from 79.7 ± 11.2 Mg C ha-1 to 111.7 ± 12.3 Mg C ha-1. Fine root biomass up to a depth of 100 cm was 4.47 ± 0.33 Mg C ha-1, 4.24 ± 0.63 Mg C ha-1, and 6.92 ± 0.32 Mg C ha-1 at 10, 12, and 14 year-old sites, respectively. Remarkably, the fine root biomass of 14-year-old site was significantly higher than those of the younger sites due to increase of the biomass at 15-30 cm and 30-50 cm depths. Our findings reveal that the biomass recovery in developing mangrove plantations exhibit rapid expansion of fine roots in deeper soil layers.
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Affiliation(s)
- Toshiyuki Ohtsuka
- River Basin Research Center, Gifu University, 1-1 Yanagito, Gifu City, Gifu, 501-1193, Japan.
| | - Suthathip Umnouysin
- Department of Biology, Faculty of Science, Silpakorn University, Nakhon Pathom, 73000, Thailand
| | - Vilanee Suchewaboripont
- The Institute for the Promotion of Teaching Science and Technology, Bangkok, 10110, Thailand
| | - Nada Yimatsa
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Chadtip Rodtassana
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
| | - Morimaru Kida
- Soil Science Laboratory, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan
| | - Yasuo Iimura
- School of Environmental Science, The University of Shiga Prefecture, 2500 Hassaka, Hikone, Shiga, 522-8533, Japan
| | - Shinpei Yoshitake
- Faculty of Education and Integrated Arts and Sciences, Waseda University, 2-2 Wakamatsu, Shinjuku, Tokyo, 162-0056, Japan
| | - Nobuhide Fujitake
- Soil Science Laboratory, Graduate School of Agricultural Science, Kobe University, 1-1 Rokkodai, Nada, Kobe, Hyogo, 657-8501, Japan
| | - Sasitorn Poungparn
- Department of Botany, Faculty of Science, Chulalongkorn University, Bangkok, 10330, Thailand
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Liu T, Bao K, Chen M, Neupane B, Gao C, Zaccone C. Human activity has increasingly affected recent carbon accumulation in Zhanjiang mangrove wetland, South China. iScience 2024; 27:109038. [PMID: 38361628 PMCID: PMC10867414 DOI: 10.1016/j.isci.2024.109038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Revised: 12/04/2023] [Accepted: 01/23/2024] [Indexed: 02/17/2024] Open
Abstract
Mangrove wetlands are an important component of blue carbon (C) ecosystems, although the anthropogenic impact on organic C accumulation rate (OCAR) in mangrove wetlands is not yet clear. Three sediment cores were collected from Zhanjiang Gaoqiao Mangrove Reserve in Southern China, dated by 210Pb and 137Cs, and physico-chemical parameters measured. Results show that the OCARs in mangroves and grasslands have significantly increased by 4.4 and 1.3 times, respectively, since 1950, which is consistent with the transformation of organic C sources and the increase of sedimentation rate. This increment is due to increased soil erosion and nutrient enrichment caused by land use change and the discharge of fertilizer runoff and aquaculture wastewater. This study provides clear evidence for understanding the changes in organic C accumulation processes during the Anthropocene and is conducive to promoting the realization of C peak and neutrality targets.
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Affiliation(s)
- Ting Liu
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Kunshan Bao
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Minqi Chen
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Bigyan Neupane
- School of Geographical Sciences, South China Normal University, Guangzhou 510631, China
| | - Changjun Gao
- Guangdong Provincial Key Laboratory of Silviculture, Protection and Utilization, Guangdong Academy of Forestry, Guangzhou 510520, China
| | - Claudio Zaccone
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy
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Määttä T, Malhotra A. The hidden roots of wetland methane emissions. GLOBAL CHANGE BIOLOGY 2024; 30:e17127. [PMID: 38337165 DOI: 10.1111/gcb.17127] [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: 09/01/2023] [Revised: 11/24/2023] [Accepted: 12/02/2023] [Indexed: 02/12/2024]
Abstract
Wetlands are the largest natural source of methane (CH4 ) globally. Climate and land use change are expected to alter CH4 emissions but current and future wetland CH4 budgets remain uncertain. One important predictor of wetland CH4 flux, plants, play an important role in providing substrates for CH4 -producing microbes, increasing CH4 consumption by oxygenating the rhizosphere, and transporting CH4 from soils to the atmosphere. Yet, there remain various mechanistic knowledge gaps regarding the extent to which plant root systems and their traits influence wetland CH4 emissions. Here, we present a novel conceptual framework of the relationships between a range of root traits and CH4 processes in wetlands. Based on a literature review, we propose four main CH4 -relevant categories of root function: gas transport, carbon substrate provision, physicochemical influences and root system architecture. Within these categories, we discuss how individual root traits influence CH4 production, consumption, and transport (PCT). Our findings reveal knowledge gaps concerning trait functions in physicochemical influences, and the role of mycorrhizae and temporal root dynamics in PCT. We also identify priority research needs such as integrating trait measurements from different root function categories, measuring root-CH4 linkages along environmental gradients, and following standardized root ecology protocols and vocabularies. Thus, our conceptual framework identifies relevant belowground plant traits that will help improve wetland CH4 predictions and reduce uncertainties in current and future wetland CH4 budgets.
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Affiliation(s)
- Tiia Määttä
- Department of Geography, University of Zürich, Zürich, Switzerland
| | - Avni Malhotra
- Department of Geography, University of Zürich, Zürich, Switzerland
- Biological Sciences Division, Pacific Northwest National Laboratory, Richland, Washington, USA
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Sun Z, An Y, Kong J, Zhao J, Cui W, Nie T, Zhang T, Liu W, Wu L. Exploring the spatio-temporal patterns of global mangrove gross primary production and quantifying the factors affecting its estimation, 1996-2020. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 908:168262. [PMID: 37918724 DOI: 10.1016/j.scitotenv.2023.168262] [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: 08/22/2023] [Revised: 10/17/2023] [Accepted: 10/30/2023] [Indexed: 11/04/2023]
Abstract
Mangrove ecosystems, as an important component of "Blue Carbon", play a curial role on global carbon cycling; however, the lack of the global estimates of mangrove ecosystem gross primary production (GPP) and the underlying environmental controls on its estimation remain a gap in knowledge. In this study, we utilized global mangrove eddy covariance data and applied Gaussian Process Regression (GPR) to estimate GPP for global mangrove ecosystems, aiming to elucidate the factors influencing these estimates. The optimal GPR achieved favorable estimation performance through cross-validation (R2 = 0.90, RMSE = 0.92 gC/m2/day, WI = 0.86). Over the study period, the globally annual averaged GPP was 2054.53 ± 38.51 gC/m2/yr (comparable to that of evergreen broadleaf forests and exceeds the GPP of most other plant function types), amounting to a total of 304.82 ± 7.71TgC/yr, hotspots exceeding 3000 gC/m2/yr observed near the equator. The analysis revealed a decline in global mangrove GPP during 1996-2020 of -0.89 TgC/yr. Human activities (changes in mangrove cover area) played a relatively consistent role in contributing to this decrease. Conversely, variations in external environmental conditions showed distinct inter-annual differences in their impact. The spatio-temporal distribution patterns of mangrove ecosystems GPP (e.g., the bimodal annual pattern, latitudinal gradients, etc.) demonstrated the regulatory influence of external environmental conditions on GPP estimates. The model ensemble attribution analysis indicated that the fraction of absorbed photosynthetically active radiation exerted the dominant control on GPP estimations, while temperature, salinity, and humidity acted as secondary constraints. The findings of this study provide valuable insights for monitoring, modeling, and managing mangrove ecosystems GPP; and underscore the critical role of mangroves in global carbon sequestration. By quantifying the influences of environmental factors, we enhance our understanding of mangrove carbon cycling estimates, thereby helping sustain of these disproportionately productive ecosystems.
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Affiliation(s)
- Zhongyi Sun
- School of Ecology and Environment, Hainan University, Haikou 570208, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation, Hainan University, Haikou 570228, China
| | - Yinghe An
- School of Ecology and Environment, Hainan University, Haikou 570208, China
| | - Jiayan Kong
- School of Ecology and Environment, Hainan University, Haikou 570208, China
| | - Junfu Zhao
- Hainan Provincial Ecological and Environmental Monitoring Centre, Haikou 571126, China
| | - Wei Cui
- Development Research Center, National Forestry and Grassland Administration, Beijing 100714, China
| | - Tangzhe Nie
- School of Water Conservancy and Electric Power, Heilongjiang University, Harbin 150080, China
| | - Tianyou Zhang
- College of Grassland Agriculture, Northwest A&F University, Xianyang 712100, China
| | - Wenjie Liu
- School of Ecology and Environment, Hainan University, Haikou 570208, China; Key Laboratory of Agro-Forestry Environmental Processes and Ecological Regulation, Hainan University, Haikou 570228, China
| | - Lan Wu
- School of Ecology and Environment, Hainan University, Haikou 570208, China.
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