Study Of Present Situation And Chang And Landscapecharacteristic Of Land Cover At Basin Scales In Zhunger Region

Recently,research on global change has been one of the most active fields,and study on LUCC is a core for global changes,because the relationship between population,resource and environment is being more and more acute.The Shili changchuan Basin and the Wufendigou Catchment both located in Huangfuchuan Basin,where soil and water erosion is much serious Since early 1980's, many eco-constrution projects had been carried out in Huangfuchuan Basin.In this paper, the Shilichangchuan Basin and Wufendigou Cattchment were selected as the study area to research the pattern of land-cover and its natural factors. Especialy we analyzed the change of land-cover in Wufendigou Cattchmen by high-spatial resolution imaginery and GIS.The paper aimed to search for regional environment condition, to understand the degree and relationality exploited by human-beings.Results would act as reference for planning to regional economy development and improving environmental quality.The results indicate:the Shilichangchuan Basin has owned a high rate of vegetation cover,however it still has some irrelational pattern.Analysis on Land cover in the Wufendigou Cattchment might be distinguished as following: cultivated lands mainly distributed through the area within less than shrubbery land,woods and grassland are the most sensitive land-cover types; Woods was the dominated type in the Wufendigou Catchment today, while cultivated land also increased through the examined period.Landscapes indices revealed that patch-shapes of land cover types were relatively stable, and they were far from Brownian movement, while fractal indices,relative relationary indices, and spatial relationship among different land cover types all showed that land cover types were inclining to a tendency of being well mixed and dispersed.The research between land cover transfoming tyes and slopes revealed the transformation from cultivated land to woods,from grasslands to woods,form woods to grasslands and their corresponding types had a getting distributing rate along slope,which was an answer to the relationary action to the study area.However, there were still irrelationery on land cover patterns, richness of land cover types by terrain and quantity rate of forestry,especially at steeper land. It would be a problem further.