[1]CHEN Yanhong,YU Jing,NIE Yan,et al.Spatial Coupling Between Land Use Level and Landscape Ecological Risk -Taking Shiyan City as an Example[J].Research of Soil and Water Conservation,2021,28(01):285-291.
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Spatial Coupling Between Land Use Level and Landscape Ecological Risk -Taking Shiyan City as an Example
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 01
Page number:
285-291
Column:
Public date:
2021-01-10
- Title:
- Spatial Coupling Between Land Use Level and Landscape Ecological Risk -Taking Shiyan City as an Example
- CLC:
- F301.2
- DOI:
- -
- Abstract:
- With the help of GIS and GeoDA technology platforms, based on the weighted kernel density values of POI data, we explored the spatial distribution pattern of land use levels in Shiyan City in 2019, and built a landscape ecological risk assessment model that complements nature and landscape based on DEM, NDVI and land use type data. Based on this, the spatial coupling relationship between the land use level and the ecological risk of the landscape was quantitatively analyzed with the help of a bivariate global autocorrelation model. The results show that:(1)the overall level of land use evaluation in Shiyan City was low, with high, higher, lower, and lower land use levels accounting for 2.5%, 15.44%, 58.92%, and 23.14% of the total area, respectively; it presented a spatial differentiation rule that took the main urban area of Shiyan City as the core and decreases to the surroundings, and there were sub-peaks in the center of each county; the evaluation results basically agreed with its development plan of ‘East Extension, Westward Advance, and Mid-Excellent';(2)the overall level of landscape ecological risks was relatively low; the high ecological risk areas mainly distributed in the main urban area and the resettlement towns and counties, which accounted for 2.44% of the total area; the higher ecological risk areas mainly distributed in the suburban areas of the main urban area, various county-level urban areas, and Zhuxi, Zhushan and Fangxian in the middle and low mountain forest and pastoral areas, accounting for 17.22%; lower and low ecological risk areas widely distributed, accounting for 80.34%;(3)there was a positive spatial correlation between land use levels and landscape ecological risks in Shiyan City; the high-value clusters mainly distributed in urban dense development areas; the low-value clusters mainly distributed in areas with low levels of harmony between humans and nature in central Luxi; high and low value agglomeration areas mainly distributed in eco-tourism development areas; low and high value agglomeration areas were mainly located in the middle and low mountain forest and pastoral areas in the south of Shiyan City, where the economy was backward and human-land conflicts were prominent. These research results can provide theoretical support for the improvement of land use level and the coordinated and sustainable development of landscape ecology in Shiyan City.
- References:
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Last Update:
2021-01-15