铁岭市清河区土地生态空间风险评价

Land Ecological Spatial Risk Assessment in Qinghe District of Tieling City

基于2013—2017年清河区统计数据及土地空间利用数据,运用景观格局分析法,通过斑块密度指数、破碎度指数、Shannon多样性指数、景观干扰度、景观生态损失度等指标对清河区的生态空间进行生态风险评价。结果表明,5年内,清河区的林地和水域及水利设施用地类型逐渐密集,空间利用的复杂度不断上升,用地类型的内容逐渐增多。生态用地的整体性较高,但破碎度也逐年上涨。生态风险指数逐渐变大,更容易受到外界因素的影响而遭受破坏。

Based on the statistical data and land space use data of Qinghe District from 2013 to 2017,the landscape pattern analysis method was used to analyze the ecological risk assessment of the ecological space in Qinghe District through patch density index,fragmentation index,Shannon diversity index,landscape disturbance degree,landscape ecological loss degree and other indicators.The results showed that within five years,the types of forest land,water areasand water conservancy facilities in Qinghe District had gradually become denser,the complexity of space utilization had continued to rise,and the content of land types had gradually increased.The overall nature of ecological land was relatively high,but the degree of fragmentation was also increasing year by year.The ecological risk index gradually became larger,and it was more susceptible to damage caused by the influence of external factors.