基于景观生态学的徐州市土地利用结构变化研究

基于徐州市2005～2009年土地利用数据,运用景观生态学中多样化指数、优势度指数、均匀度、区位熵等有关结构数量分析的方法,对徐州市土地利用结构进行了定量分析。结果表明:2005年以来徐州市土地利用结构变化更趋于多样化和平均化;2005～2009年土地利用变化强度在不同的地类之间存在着明显的差异;2009年各区县均有2～6类土地利用类型的区位熵大于1,表明该土地类型相对于徐州市而言具有明显的区位意义,空间聚集程度高。最后根据研究结构提出相应的对策建议。

A Research into Land Use Structure Change of Xuzhou Based on Landscape Ecology

According to Xuzhou land use date from 2005 to 2009,a quantitative analysis of land use structure of Xuzhou was carried out in this paper by means of diversity index,dominance index,evenness index and location entropy of landscape ecology.Research results showed that the changing trend of Xuzhou land use structure tended to be diversified and averaged since 2005;there were clearly difference in the changing intensity of Xuzhou various land utilization types from 2005 to 2009;the location entropy of 2-6 types of land use type was greater than 1,indicating that the land type had obvious regional significance to Xuzhou City,and had a high degree of spatial aggregation.Finally,corresponding countermeasures and suggestions were proposed according to the research results.