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我国青藏高原生态系统服务与生态风险时空演变特征及其耦合评估

LI Ruowei HAN Guodong SUN Jian CHI Wenfeng

中国草地学报2025，Vol.47Issue(12)：30-46,17.
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中国草地学报2025，Vol.47Issue(12)：30-46,17.DOI:10.16742/j.zgcdxb.20250162

我国青藏高原生态系统服务与生态风险时空演变特征及其耦合评估

Spatiotemporal Evolution and Coupling Evaluation of Ecosystem Services and Ecological Risks on the Qinghai-Xizang Plateau

LI Ruowei 1HAN Guodong 2SUN Jian 3CHI Wenfeng4

作者信息

  • 1. Resource Utilization and Environmental Protection Coordinated Development Academician Expert Workstation in the North of China,Inner Mongolia University of Finance and Economics,Hohhot 010070,China||Office of Scientific Research,Inner Mongolia University of Finance and Economics,Hohhot 010070,China||Key Laboratory of Grassland Resources of the Ministry of Education/College of Grassland Science,Inner Mongolia Agricultural University,Hohhot 010011,China||State Key Laboratory of Tibetan Plateau Earth System Science(LATPES)/Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China
  • 2. Key Laboratory of Grassland Resources of the Ministry of Education/College of Grassland Science,Inner Mongolia Agricultural University,Hohhot 010011,China
  • 3. State Key Laboratory of Tibetan Plateau Earth System Science(LATPES)/Institute of Tibetan Plateau Research,Chinese Academy of Sciences,Beijing 100101,China
  • 4. Resource Utilization and Environmental Protection Coordinated Development Academician Expert Workstation in the North of China,Inner Mongolia University of Finance and Economics,Hohhot 010070,China||Office of Scientific Research,Inner Mongolia University of Finance and Economics,Hohhot 010070,China
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摘要

Abstract

Ecosystem services(ES)and ecological risk(ER)respectively represent the capacity of eco-systems to support human well-being and the potential for degradation under external disturbances.In recent years,the cumulative impacts of glacier retreat,permafrost degradation,and grassland deterioration have led to a decline in ES and an increase in ER on the Qinghai-Xizang Plateau.Therefore,exploring the coupling relationship between ES and ER on the Plateau is of great importance for accurately identifying ecological degradation processes,improving regional ecological resilience,and supporting effective environ-mental management.Based on remote sensing and statistical data from 2000 to 2020,this study evaluated important ES indicators and constructed an ER assessment framework using the InVEST model and land-scape ecological risk assessment methods.The results showed that:(1)From 2000 to 2020,mean annual grassland productivity increased from 91.63 g/m2 to 107.52 g/m2,while carbon storage declined from 6 571.73 Mg to 5 897.60 Mg.Water yield decreased from 122.10 mm to 86.55 mm in 2015 and rebounded to 110.71 mm in 2020.Habitat quality declined from 0.51 to 0.45,and soil conservation showed periodic fluctuations,ranging between 33 391.59 g/m2 and 25 772.08 g/m2.(2)The overall ER level showed a slight decline,but high-risk areas still accounted for over 19%,primarily concentrated in ecologically fragile zones such as Kekexili,the Qiangtang Plateau,and the Qaidam Basin.(3)Correlation analysis revealed significant negative correlations between ER and both grassland productivity(R2=-0.66,P<0.05)and habitat quality(R2=-0.73,P<0.05).Carbon storage,water yield,and soil conservation also exhibited moderate negative correlations,suggesting that ER exerts an overall inhibitory effect on ES.

关键词

青藏高原/高寒生态系统/空间异质性/土地利用变化/分区管理/可持续发展

Key words

Qinghai-Xizang Plateau/Alpine ecosystem/Spatial heterogeneity/Land use change/Regionalized management/Sustainable development

分类

农业科技

引用本文复制引用

LI Ruowei,HAN Guodong,SUN Jian,CHI Wenfeng..我国青藏高原生态系统服务与生态风险时空演变特征及其耦合评估[J].中国草地学报,2025,47(12):30-46,17.

基金项目

教育部科技创新团队项目(No.IRT_17R59) （No.IRT_17R59）

中国草地学报

OA北大核心

1673-5021

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