A Standy On Monitering And Vegetation Characteristic Of Desertification In Daqing City

According to the analysis of two Landsat TM images, some aerial photographs and free MODIS data, this paper interpreted the images from the aspects of land utilization, salinization and soil sanding by way of man-machine interaction using TM correction and enchasing after TM image dividing correction. Then, the salinazaion and sanding area of different types of land were calculated, and data integrated analysis and special maps design and weaving were performed. The interpretation results were supplemented and modified to ensure the interpretation precision by developing labels of image interpretation based on investigation results of the spot According to the vegetation component, plant life-form and ecotypes characteristics. The desertification florn characteristic of Daqing district was analyzed with investigation on the spot and statistical method. Some countermeasures of desertification fathering are also put forward according to the local conditions.The results of this paper are as follows. (1) Daqing city lies in a farming-herd interleaving zone with frail ecological environment Because of natural and man-made factors, land salinization, sanding and grassland decreasing are more serious. (2) TM image interpretation results obviously show that the desertification plants in Daqing city belongs to several plant sections and categories. ( 3) Most of the desertification plants are perennial herbs, which are made up of psammophytes and xerophytes with zoology and species diversity. (4) Most plants in desertification area are yeyophytes and mesophytes and there is few hygmphytes, which shows that this area is droughty.