Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin

YANG Junyi; LI Junsheng; GUAN Xiao

doi:10.13198/j.issn.1001-6929.2023.01.08

Volume 36 Issue 4

Apr. 2023

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Article Navigation > Research of Environmental Sciences > 2023 > 36(4): 757-767

YANG Junyi, LI Junsheng, GUAN Xiao. Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin[J]. Research of Environmental Sciences, 2023, 36(4): 757-767. doi: 10.13198/j.issn.1001-6929.2023.01.08

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YANG Junyi, LI Junsheng, GUAN Xiao. Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin[J]. Research of Environmental Sciences, 2023, 36(4): 757-767. doi: 10.13198/j.issn.1001-6929.2023.01.08

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Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin

doi: 10.13198/j.issn.1001-6929.2023.01.08

YANG Junyi^1
,,
LI Junsheng^{1, 2},
GUAN Xiao^{1
,
,}

1.
State Environmental Protection Key Laboratory of Regional Eco-process and Function Assessment, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
2.
Command Center for Comprehensive Survey of Natural Resources, China Geological Survey Bureau, Beijing 100055, China

Funds: National Key Research and Development Program of China (No.2020YFC1807704)

Received Date: 2022-11-09
Rev Recd Date: 2023-01-03

Abstract

Abstract

The carbon sequestration services provided by ecosystems are one of the most important means to achieve carbon neutrality. Clarifying the driving mechanisms of environmental factors is an important basis for effectively improving carbon sequestration services of ecosystems. This study takes the Wujiang River Basin as a study area, uses the InVEST model to valuate carbon storage of the Wujiang River Basin from 2000 to 2020, integrates the influencing factors in the social-economic-natural system, and uses the random forest and Partial Dependence Plot (PDP) models to analyze the contribution of each factor to the carbon sequestration services and the driving mechanisms. The results show that: (1) The spatial distribution of carbon sequestration services in the Wujiang River Basin is high in the northeast and low in the southwest, showing a trend of downstream > midstream > upstream and a significant increase over time, and the growth rate of the upstream is greater than that of the midstream and downstream. (2) In the spatial and temporal dimensions, the natural surface factors are the environmental factors that contribute the most to the carbon sequestration service, among which vegetation coverage has the highest contribution, with a spatial scale of 55.08%, and slope has the highest contribution, with a temporal scale of 34.46%. (3) The influencing factors show different driving mechanisms in space and time, with the strongest change in the driving mechanism of population density, in space, the carbon sequestration service decreases with population increase, and over time, the carbon sequestration service increases with population increase overall. (4) From 2000 to 2020, the change of human activities is an important reason for the increase in carbon sequestration services of ecosystems in the Wujiang River Basin, and climate change is also an important influencing factor. The results show that although the level of carbon sequestration services is limited by natural surface environmental factors, the positive disturbance of human activities can significantly improve the carbon sequestration services of the basin ecosystems.
- Wujiang River Basin,
- ecosystem,
- carbon sequestration services,
- spatial and temporal pattern,
- driving mechanism

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References(42)

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Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin

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Spatio-Temporal Pattern and Driving Mechanism of Ecosystem Carbon Sequestration Services in the Wujiang River Basin

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