PARAMETERIZED REGULATION PLANNING FRAMEWORK FOR ECOLOGICAL RISK IN MINING CITIES:BASED ON THE CORRELATION MECHANISM BETWEEN ECOLOGICAL RISK AND LANDSCAPE PATTERN
It has become an important part of the territorial planning system to carry out in-depth exploration of the influence mechanism of landscape pattern on the ecological process and to use the results of ecological risk evaluation as the scientific basis for the optimization of the spatial layout.This paper takes Haicheng-Dashiqiao mining area,the largest magnesium industry base in China,as the research object,and forms a risk regulation planning framework based on landscape pattern parameters by establishing a comprehensive ecological risk index multiple regression model.The results of the study show that:(1)the comprehensive ecological risk index formed by principal component analysis can integrate the characteristics of multiple indicators and better reflect the comprehensive ecological risk situation;(2)the multiple regression model established with landscape pattern parameters as variables has a good explanatory capacity for the comprehensive ecological risk index,and through sensitivity analysis,it is able to characterize the extent of the contribution of different landscape pattern parameters to ecological risk;(3)the study based on the correlation mechanism between ecological risk and landscape pattern provides a quantitative basis for the ecological risk regulation by use of spatial planning.This paper proposes a spatial planning and design method for risk process intervention under the pattern-process mutual feedback theory of landscape ecology,which provides a highly operable planning framework for the prevention and avoidance of ecological risks in mining cities.
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