庐山市土地景观演变生态风险评价与分析

Ecological Risk Assessment and Analysis of Land Landscape Evolution in Lushan City

区域生态风险评价是建立区域生态风险预警机制,实现有效生态风险管理的基础,其中,生态风险评价模型的构建是关键。文中通过建立生态风险评价模型,运用GIS技术和地统计学方法,对研究区域内的生态风险进行时序研究和分析。利用Arc GIS 10.8软件空间分析模块中的普通克里金插值方法,得到研究区域的生态风险空间分布状况,对各小区块进行景观格局指数计算,从而得到景观损失度指数以及景观生态风险指数。建立的评价模型为研究区域尺度政策实施的生态风险状态及发展趋势提供了新思路。

Regional ecological risk assessment is the basis of establishing regional ecological risk early warning mechanism and realizing effective ecological risk management,and the construction of ecological risk assessment model is the key.In this paper,ecological risk assessment model is established,GIS technology and geostatistics method are used to study and analyze the time series of ecological risk in the study area.The spatial distribution of ecological risk in the study area was obtained by using the common Kriging interpolation method in the spatial analysis module of Arc GIS 10.8 software,and the landscape pattern index was calculated for each plot,so as to obtain the landscape loss index and landscape ecological risk index.The established evaluation model provides a new way to study the ecological risk status and development trend of regional scale policy implementation.