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Jia H, Fei X, Zhu J, Chen W, Chen R, Liao Z, Zhou B, Huang Y, Du H, Xu P, Zhang X, Li W. Soil respiration and its response to climate change and anthropogenic factors in a karst plateau wetland, southwest China. Sci Rep 2024; 14:8653. [PMID: 38622331 PMCID: PMC11018823 DOI: 10.1038/s41598-024-59495-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2024] [Accepted: 04/11/2024] [Indexed: 04/17/2024] Open
Abstract
It is important to investigate the responses of greenhouse gases to climate change (temperature, precipitation) and anthropogenic factors in plateau wetland. Based on the DNDC model, we used meteorological, soil, and land cover data to simulate the soil CO2 emission pattern and its responses to climate change and anthropogenic factors in Guizhou, China. The results showed that the mean soil CO2 emission flux in the Caohai Karst Plateau Wetland was 5.89 ± 0.17 t·C·ha-1·yr-1 from 2000 to 2019, and the annual variation showed an increasing trend with the rate of 23.02 kg·C·ha-1·yr-1. The soil total annual mean CO2 emissions were 70.62 ± 2.04 Gg·C·yr-1 (annual growth rate was 0.28 Gg·C·yr-1). Caohai wetland has great spatial heterogeneity. The emissions around Caohai Lake were high (the areas with high, middle, and low values accounted for 3.07%, 70.96%, and 25.97%, respectively), and the emission pattern was characterized by a decrease in radiation from Caohai Lake to the periphery. In addition, the cropland and forest areas exhibited high intensities (7.21 ± 0.15 t·C·ha-1·yr-1 and 6.73 ± 0.58 t·C·ha-1·yr-1, respectively) and high total emissions (54.97 ± 1.16 Gg·C·yr-1 and 10.24 ± 0.88 Gg·C·yr-1, respectively). Croplands and forests were the major land cover types controlling soil CO2 emissions in the Caohai wetland, while anthropogenic factors (cultivation) significantly increased soil CO2 emissions. Results showed that the soil CO2 emissions were positively correlated with temperature and precipitation; and the temperature change had a greater impact on soil respiration than the change in precipitation. Our results indicated that future climate change (increased temperature and precipitation) may promote an increase in soil CO2 emissions in karst plateau wetlands, and reasonable control measures (e.g. returning cropland to lakes and reducing anthropogenic factors) are the keys to controlling CO2 emissions.
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Affiliation(s)
- Hongyu Jia
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Xuehai Fei
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China.
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China.
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China.
- Guizhou Caohai Observation and Research Station for Wet Ecosystem, National Forestry and Grassland Administration, Weining, 553100, Guizhou, China.
| | - Jingyu Zhu
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Weiduo Chen
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Rui Chen
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Zhangze Liao
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Binghuang Zhou
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Yingqian Huang
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Haiqiang Du
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Peng Xu
- College of Resources and Environmental Engineering, Key Laboratory of Karst Georesources and Environment (Guizhou University), Ministry of Education, Guizhou University, 2708 Huaxi Avenue, Guiyang, 550025, Guizhou, China
- Guizhou Karst Environmental Ecosystems Observation and Research Station, Ministry of Education, Guiyang, 550025, Guizhou, China
- Guizhou Provincial Double Carbon and Renewable Energy Technology Innovation Research Institute, Guiyang, 550025, Guizhou, China
| | - Xu Zhang
- Guizhou Caohai Observation and Research Station for Wet Ecosystem, National Forestry and Grassland Administration, Weining, 553100, Guizhou, China
| | - Wangjun Li
- Guizhou Province Key Laboratory of Ecological Protection and Restoration of Typical Plateau Wetlands (Guizhou University of Engineering Science), Bijie, 55170, Guizhou, China
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