伊洛河流域典型区域1987-1999年间土地利用/土地覆被变化研究

对案例区的3期TM影像进行监督分类和相应处理，获得相应时段的土地利用变化及其空间景观特征数据．研究认为案例区土地利用／土地覆被的时空变化特征为：1987—1996年不同土地利用类型之间的转换较为明显，林地和农业用地的破碎化趋势比较突出；1996-1999年不同用地类型之间的转换不明显．未利用土地的空间分布呈分散化趋势．13a间案例区土地利用结构时空变化过程为土地利用程度由衰退期或调整期转蛮为发展期．十地利用的时间动态特征由怏谏蛮化刭转蛮为愕凉蛮化到．

A Study on the Land Use/Land Cover Change in the Typical Region of Yiluo River Drainage Basin from 1987 to 1999

The Landsat TM images in 1987,1996 and 1999 in the studied district are classified. And then the classified outcome is more d;.sposed, the data of land-use change and the spatial landscape characteristics is come out. Through more analyzing the spatial-temporal characteristics of the land use/land cover about the study district is obtained. From 1987 to 1996 the spatial-temporal characteristics of the land use/ land cover in the studied district is that the conversion among the five kind of land-use is obvious and in space the break tide of the forestland and the agrivultural land is clear. From 1996 to 1999 the spatial-temporal characteristics of the land use/land cover in the studied district is that the conversion among the five kind of land -use is inconspicuous and in space the trend of disperse of non-arable land is dear. The changing of spatial-temporal course of land-use struvture from 1987 to 1999 is that the degree of land-use in studied district is from winter or adjustment phase to development phase and the temporal-dynamitic festure of land- use is from quich-changing to slow-changing.