Study on the Dynamic Change of Landscape Pattern of Oasis in Arid regions Based on RS and GIS Methods -application of Jinta Oasis

Landscape Ecology is a new field of the macro-ecological research. Study on the Landscape pattern change is a research hotspot of the landscape ecology at present. The main research methods in this paper are stated as follow: using remote sensing data to get the basic landscape pattern data of Jinta Oasis in 1990 and 2000; calculating four landscape indexes by utilizing the statistics function of GIS; using ArcView spatial analysis module to convert the landscape mosaics of the research region into 5m 5m grids and calculate the transition matrix of the landscape mosaics. The results show: First, the change of landscape pattern in oasis relates with the change of water resource. The quantity of the Jinta Oasis water resource changes indistinctively, however, its utilization ratio has increased greatly, which results in a big increasing of irrigation land. Secondly, Jinta Oasis would have been the tendency of desertification. Thirdly, county, towns and villages expand quickly and mainly on the bare and unused land. The town inhabitant region in Jinta Oasis has the tendency of citification.