The Study Of Land Use/Cover Change In Arid Area Oasis Based On Remote Sensing And GIS

The change of Global environmental is becoming more and more severe,and the research of land use / cover change is the key point to solve the problem of ecological environment.It is the starting point of regional environmental research and the implementation of sustainable development strategy. Oasis in arid area is typical of the special ecological environment, strengthen the research of special land use / cover and the analysis of the changing regularity.Using the proposed reasonable and efficient land utilization scheme to reduce the destruction of human activities on the ecological environment and maintain the stability of fragile ecologicalstructure and development of land resources in our country is of great significance.In this paper, based on the change of global ecological environment, a rough exposition of the oasis, land use / cover change, GIS and RS at home and abroad. Using Landsat remote sensing data, relying on ENVI to classify the land use of the basin in 1999, 2007, 2014 and make the current situation of the three land use map. Combined with Excel, ArcGIS to analyse land types, land conversion matrix information extraction in the aspect of the angle of the change number, amplitude, velocity, trend analysis of Sangong River basin land use / cover change.according to the comprehensive index of land use,we can konw that the area land use is in the relative balance of open development dynamic.Getting further to explore the land use / cover change of the basin, we collect the relevant information, and to explore the driving force of land use / cover change in the study area. The relationship between precipitation, temperature, evaporation and land type is mainly discussed in the natural environment. Combined with the software of SPSS factor analysis module, we choose eight factors,that is total population number, rural labor force, the construction investment of the principal component analysis. The results showed that the human society economy is stronger influence than the natural environment on the study area of land use change.Among them, the total population and the total output value of agriculture is of basin land use / cover change most influential factor.