[1]ZHANG Xuemao,DONG Tingxu,DU Huaming,et al.Analysis on Spatial Heterogeneity of Landscape Ecological Risk in Fujiang River Basin[J].Research of Soil and Water Conservation,2022,29(03):156-163.
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Analysis on Spatial Heterogeneity of Landscape Ecological Risk in Fujiang River Basin
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
29
Number of periods:
2022 03
Page number:
156-163
Column:
Public date:
2022-04-20
- Title:
- Analysis on Spatial Heterogeneity of Landscape Ecological Risk in Fujiang River Basin
- Keywords:
- landscape ecological risk assessment; spatial principal component analysis; spatial autocorrelation analysis; spatial heterogeneity; Fujiang River Basin
- CLC:
- X826
- DOI:
- -
- Abstract:
- The assessment of landscape ecological risks in the Fujiang River Basin can provide a scientific reference for the development of ecological risk prevention and control measures in the region and the improvement of ecosystem service functions. From the three dimensions of ‘nature-society-landscape pattern', 10 landscape ecological risk stress factors, including altitude, soil type, and land cover type, et al., were selected to construct an evaluation index system, and spatial principal component analysis, autocorrelation analysis, and other methods were used to analyze the spatial heterogeneity of landscape ecological risk in the Fujiang River Basin. The results show that:(1)as a whole, the landscape ecological risk level of the Fujiang River Basin is higher in the northwest than in the southeast, and it has a concentrated distribution pattern; among them, the ‘hot spot' areas in Songpan, Pingwu, Beichuan, Anyue, Tongnan and other districts and counties and ‘cold spot' areas in Zitong, Youxian, Yanting, Zhongjiang and other districts and counties have formed form, which are mainly affected by the dimensional factors of the natural and landscape pattern;(2)the study area is in the middle or above risk level area; the area is 25 596.51 km2, accounted for 65.36% of the total area of the basin, mainly distributes in the upstream counties(districts)such as Songpan, Pingwu and Beichuan;(3)landscape types are closely related to the spatial distribution of ecological risk levels, and the distribution of low-level and lower ecological risk areas coincides with the direction of the mainstream of the Fujiang River; the spatial heterogeneity of landscape ecological risks in the Fujian River Basin is obvious, and the ecological risks faced by them are large.
- References:
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Last Update:
2022-04-20