[1]YU Dun,LIANG Zhenbao,XIAO Zhijuan,et al.Temporal and Spatial Characteristics of Land Ecological Risk in Nanchang City Based on Landscape Ecology[J].Research of Soil and Water Conservation,2020,27(01):213-220.
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Temporal and Spatial Characteristics of Land Ecological Risk in Nanchang City Based on Landscape Ecology
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
27
Number of periods:
2020 01
Page number:
213-220
Column:
Public date:
2020-02-20
- Title:
- Temporal and Spatial Characteristics of Land Ecological Risk in Nanchang City Based on Landscape Ecology
- Keywords:
- land ecological; spatial distribution pattern; risk; Nanchang City
- CLC:
- F301.2
- DOI:
- -
- Abstract:
- Assessing the degree of ecological risk under different land use patterns and revealing its temporal and spatial evolution processes are of great significance for optimizing land use patterns and strengthening ecological protection. In this paper, the land use data were obtained by remote sensing image interpretation. The administrative village is taken as the research unit. The ecological risk assessment system is constructed based on the landscape ecology theory to evaluate the ecological risk of land use in Nanchang City from 2005 to 2017. On this basis, with the support of Geoda and GS+ platform, the spatial-temporal evolution characteristics of ecological risk are analyzed. The results show that:(1)the ecological risk of land use in Nanchang City is mainly low and medium risk, but the area of each risk grade is generally rising; the high-risk area is mainly located in the southwestern border and the Poyang Lake area, the ecological risk in the central urban area is gradually increasing;(2)from 2005 to 2017, the model fitting base value decreased from 0.713 to 0.604, and the ecological risk had a certain spatial variability, in the 45° direction, the degree of variation was the largest;(3)the ecological risk space Moran’s I values are 0.451 9, 0.424 3, and 0.401 0, respectively, showing a positive correlation; the HH and LL types mainly distribute in the local area; the HH type distribution in the group of Shigang Town and Songhu Town in the Xinjian District, and near the Poyang Lake area; the LL type distributes in the outer suburbs and the interlaced areas of the city. The research results can provide reference for urban landscape ecological construction and land use optimization in Nanchang.
- References:
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Last Update:
2020-02-25