Dual response of the Loess Plateau ecosystem to climate change and human activities

doi:10.13474/j.cnki.11-2246.2023.0192

Abstract

Abstract: In the context of climate change and increasingly intense human activities, to assess the spatial and temporal changes of ecological and environmental quality in the Loess Plateau region, this study takes the Loess Plateau as the study area based on the GEE platform, selects MODIS product data from 2000 to 2020 to construct the RSEI index, and uses the trend analysis method, standard deviation ellipse method, and residual analysis method to analyze the spatial and temporal changes of ecological and environmental quality in the Loess Plateau. The results show that: ①The RSEI of Loess Plateau has shown an increasing trend in the past 21 years, and its growth rate is 0.005/a (p<0.01).②spatially, the RSEI is mainly increasing, accounting for 92.78% of the total area of the region, and keep improving trend in the future.③In terms of migration, the migration distance of poor grade is the largest, at 85.67 km, followed by good grade with 49.05 km; the smallest migration distance is medium grade with 30.18 km.④Both climate change and human activities have positive effects on the RSEI of Loess Plateau, and human activities are the main driving factor.

Key words: Loess Plateau, RSEI, climate change, human activities

CLC Number:

P237

JIANG Xiuwei, SHI Yun. Dual response of the Loess Plateau ecosystem to climate change and human activities[J]. Bulletin of Surveying and Mapping, 2023, 0(7): 1-6.

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