Landscape Pattern Optimization in Ganzhou City based on Landscape Ecological Risk Assessment
Ecological security is related to people's well-being and national security,through the construction of ecological network,identification and protection of important landscape ecological components,for the stability of the ecosystem,to achieve sustainable development of human and land is crucial.This paper takes Ganzhou city as the research area,makes full use of landscape eco-logical risk assessment,minimum cumulative resistance model and gravity model methods,analyzes the landscape ecological risk distribution of Ganzhou city in 2020,constructs landscape ecological network and proposes corresponding network element protection strategies.The results showed that:1)landscape ecological risk in Ganzhou was mainly distributed in low-risk and lower-risk areas,with a spatial pattern of higher in the north and lower in the south,higher in the middle and lower in the periphery;2)The distribution of ecological source sites was determined to be similar to that of the"Four Screens and Three Regions",being the forested areas of the Jiulong Mountains,the Wuyi Mountains,the Luoxiao Mountains and the Yushan Mountains;3)A total of 28 ecological corridors were extracted,including 5 first-level corridors.First-level corridors were scattered in the north,middle and south regions of the study area,which were connected to ecological sources with similar distances respectively.Second-level ecological corridors were evenly distributed on the whole;4)Ecological nodes showed a spatial distribution pattern of"more in the west and less in the east,more in the north and less in the south".There were 12 first-level ecological nodes,mostly distributed in the first-level ecological corridors and ecological source areas;5)The protection and management of regional ecological networks should be strengthened by insisting on forest protection and cultivation to improve the ecosystem services in the source area,and controlling human activities in the ecological corridors and ecological nodes.The research enriches the research of regional ecological security,and can provide certain scientific guidance for ecological function improvement,ecological restora-tion and ecological control.
landscape ecological risklandscape pattern optimizationminimum cumulative resist-ance modelhilly region of southern Jiangxi
国家科技期刊平台
NSTL
万方数据
维普
