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[1]ZHENG Xuehui,YANG Zhi,REN Zhengyan,et al.A GIS-based Soil Erosion Sensitivity and Landscape Ecological Risk Assessment in Ningxia, Northwestern China[J].Research of Soil and Water Conservation,2022,29(06):8-13,20.

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A GIS-based Soil Erosion Sensitivity and Landscape Ecological Risk Assessment in Ningxia, Northwestern China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 29 Number of periods: 2022 06 Page number: 8-13,20 Column: Public date: 2022-10-20

Title:: A GIS-based Soil Erosion Sensitivity and Landscape Ecological Risk Assessment in Ningxia, Northwestern China

Author(s):: ZHENG Xuehui¹, YANG Zhi², REN Zhengyan², WEI Xiaoyan², CHENG Jinhua¹; (1.School of Soil and Water Conservation, Beijing Forestry University, Beijing 100083, China; 2.Ningxia Hui Autonomous Region Monitoring Station of Soil and Water Conservation, Yinchuan 750021, China)

Keywords:: Ningxia; soil erosion; landscape; risk assessment

CLC:: S157.1

DOI:: -

Abstract:: In order to explore the spatial differences of soil erosion in Ningxia, we identified soil erosion sensitive areas, and conducted a comprehensive ecological risk assessment and analysis of soil erosion and landscape in the study area. Meteorological, vegetation, DEM, soil, land use and other data, combined with GIS technology and Fragstats 4.2 software were mainly used to build a comprehensive evaluation model of soil erosion sensitivity and landscape ecological risk. The main results are as follows.(1)In the comprehensive risk assessment, the proportions of the five risk levels from low to high in Ningxia are 34.97%, 33.56%, 15.03%, 11.57%, 4.88%.(2)On the county scale, high-risk areas are concentrated in parts of Xiji, Pengyang, and Longde; higher-risk areas are located in the southern mountainous areas and the southernmost part of Yanchi; medium-risk areas are mainly located in Haiyuan, Tongxin, etc. The risk areas below the lower level are distributed in all counties(districts).(3)Cultivated land and grassland area accounted for the largest proportion in Ningxia, accounting for 69.7% in total. Different types of land use have different risk levels. It can be seen that the spatial distribution of soil erosion susceptibility in Ningxia is significantly different, and the areas with low risk levels are widely distributed.

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Last Update: 2022-10-20