Abstract :
Selected WanDing river basin as a case study which is located in Yunnan frontier area, based on comprehensive integrated application of remote sensing and GIS technology, this research used interpretation method to extract study area´s land use/land cover information in 2004, and adopted spectrum direct comparison method to extract its land use/land cover change information from 1990 to 2004. In consideration of the small river basin´s special character that its land cover or landscape not only has spatial integrity of surface unit, and internal characteristic similarity, but also has some difference in land use forms and intensions between different neighboring nations, in order to obtain LUCC information in this study area, this research analyzed each land use type´s quantity, spatial distribution characteristic and their land use/land cover change´s quantity, spatial distribution characteristic, land use change degree characteristic etc., emphasized on those characteristics´ difference between different neighboring nations. Finally, took the area in China in this basin as example, discussed and analyzed the main driving factors which caused its land use/land cover change, and their influence process.The preliminary results indicate that: 1) remote sensing monitoring and GIS processing technology is necessary, progressive, and scientific when apply to this kind of special area, and after field sampling analysis we could come to conclusion that the interpretation precision of this study area´s monitoring result comes near to 90%; 2) the landscape pattern in 2004 was that the percentage of woodland was the biggest one(47.35%), the next was farmland(30.68%), the remaining lawn, water area, construction land and unused land were 14.14%, 1.06%, 4.43%, and 2.34% respectively; 3) contrasted the land use structure status belongs to our country and Burma in this basin, we can find that there exited obvious difference in land use forms and its effect in 2004, the most- obvious representation was construction land use, its proportion in our country was 6.34%,while 3.62% in Burma, this phenomena shows that the urbanization level was higher in our country, and our land use degree was greater than that of our neighboring country; 4) it can be concluded from LUCC monitoring result that, from 1990 to 2004, the total area whose land use type had changed in this basin up to 25.81 km2 reached 12.06% of the whole basin´s area, it indicates that, the land use changed greatly , the most prominent performance was that construction land expanded to a large degree, its grow index up to 6.02% per year, the spatial distribution of this expansion main occurred along important road regions on the edge of WanDing economic development zone, and expanded at the cost of occupying a mass of farmland. The next prominent performance was that water area and woodland reduced in a large-scale. 5) contrasted and analyzed the two neighboring countries´ LUCC in this basin, we can conclude that, except water area and construction land changed in a consistent way, the others were all presented a different tendency, this distinction fully presents land use difference between the two countries; 6) made analysis to nature factors and humanities factors which affects land use and land cover change in the part of China in this basin, it indicates that, the special climate and terrain landform natural factors, the rapid growth of population and economical, the progress of social product level and technical, and the guidance function to land use by system and policy were the main driving forces, within them, the driving function of social economy factor was dominant.
