云南省植被固碳能力与产水、土壤保持服务冷热点识别

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Abstract Taking Yunnan Province as the study area, this study evaluated the carbon sequestration capacity and typical ecosystem services of its vegetation ecosystems, and identified the integrated cold and hot spots areas of carbon sequestration capacity and typical ecosystem services through spatial cold spot analysis. The results showed that. (1) The carbon sequestration capacity of Xishuangbanna in Yunnan Province was the largest from 2000 to 2020, with maximum values of 590.02gC/m² in 2000 and 591.15gC/m² in 2020, respectively. In terms of the change in sequestration capacity, the carbon sequestration capacity of Diqing, Zhaotong, Nujiang, Dehong and Lincang was increasing, accounting for 37.5% of the total city in Yunnan Province, while the other cities showed decreasing trend in sequestration capacity. Overall, the carbon sequestration capacity of vegetation ecosystems in Yunnan Province showed decreasing trend. (2) From 2000 to 2020, the maximum water yield service capacity in Yunnan was 2215.84mm in 2000 and 2045.83mm in 2020, and the change in total water yield was generally decreasing. From 2000 to 2020, the total soil conservation service capacity in Yunnan Province showed overall increasing trend. Specifically, the soil conservation service capacity of Kunming, Diqing, Nujiang, and other regions showed increasing trend and only Dehong showed decreasing trend in the total soil conservation service, which accounted for 6.25% of the total city of Yunnan Province. (3) Overlaying the three services of carbon sequestration, water yield, and soil conservation in vegetation ecosystems, it was found that there were fewer changes in the spatial distribution of the integrated hotspot areas and significant changes in the spatial distribution of the cold spot areas during 2000~2020. The integrated hotspot areas (with 99% confidence level, 95% confidence level, and 90% confidence level) were mainly distributed in Xishuangbanna, Pu'er, Lincang and, Dehong, among which the extreme hotspot areas (with 99% confidence level) were most significantly distributed in Xishuangbanna. The results of this study could contribute to improving the carbon sequestration capacity of vegetation and optimizing the spatial pattern of ecosystem services.

Key words： carbon sequestration capacity typical ecosystem services identification of hot and cold spots drive analysis Yunnan

Received: 15 June 2023

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X171.4

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	Articles by authors
	LI Zi-hui
	ZHANG Ya
	BA Yong
	CHEN Wei-zhi
	DONG Chun-feng
	YANG Meng-jiao
	WEN Fang-ping

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LI Zi-hui,ZHANG Ya,BA Yong等. Cold and hot spots identification for carbon sequestration capacity, water yield and soil conservation services of vegetation in Yunnan Province[J]. CHINA ENVIRONMENTAL SCIENCECE, 2024, 44(2): 1007-1019.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2024/V44/I2/1007

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