关键词: 绿洲景观, 景观格局, 变化, 遥感与GIS, 金塔绿洲

Abstract: Landscape Ecology is a new field of the macro-ecological research.Study on the Landscape pattern change is the research hotspot of the Landscape Ecology at present.The paper use remote sensing tools to get the basic landscape pattern data for Jinta Oasis in 1990 and 2000.The analysis method of Geographic Information System(GIS) is used to calculate the six landscape indexes,including rate between parameter and area,diversity and evenness,dominance,fragmentation,separation and fractal dimension.The landscape mosaics of the research region are transformed into 5×5 square meters grids.From the spatial analysis,we get the transform matrix of the landscape mosaics,which is the base for spatial change analysis of the landscape pattern.The calculation results show that:(1) Diversity and evenness,dominance have close relativity.We only need to take Diversity in consideration.(2) The landscape pattern change in Oasis has also close relativity with the change of the water resources.(3) Jinta Oasis has the tendency of desertification.(4) Residential areas for city expand fast on the not used land,which has the urbanization trend.(5) The values of the fragmentation for the cities can not show the true landscape pattern characteristics of the cities.We could get better result when some big mosaics that occupy most of the area were not thought about.

Key words: oasis, Landscape pattern, dynamic monitor, Remote Sensing and GIS