徐州市土地利用变化对生态效应的影响分析

文章以1994年、2002年徐州市的土地利用图为主要信息源,在GIS技术的支持下,剖析了近八年来徐州市土地利用的变化规律及其对城市生态效应的影响.结果表明:研究时段内,徐州市城市土地利用类型呈现出从自然、半自然景观用地向人工景观用地转变的趋势;城市土地利用类型的变化导致了城市整体生态效应的下降;在各种土地利用类型中,林地和农田的数量和质量对城市整体生态效应的影响最为突出.

Effects of Changes in Land Use on the Ecological Effect in Xuzhou

With the help of GIS,changes in land use and their effects on the ecological effect were explored based on the information from two land use maps of 1994 and 2002.The result shows that in the recent eight years,the types of land use in Xuzhou city have being changed from natural or semi-natural land use(crop-land,woodland,etc.) to artificial land use(building field,traffic land,etc.),which has directly deteriorated the city ecological effect.Among various types of land use,the area and quality of woodland and crop-land have most striking impact on the ecological effect.