Study On Changes Of Land Use Landscape In Shucheng County Based On RS And GIS

The development of remote sensing technology and geography information system, has offered the information sources and technological means for global changes and sustainable development of the whole world. Land use is regarded as the most outstanding view sign of the surface layer system of the earth, and then its change is an important studied field in global change in recent years. Monitoring and analyzing the land use space-time changes can better understand the change course and mechanism of land use. Meanwhile, through adjusting the economic activity of human society, impel the using of land more rationally, thus achieve the purpose of sustainable use of land resource. ShuCheng County is located in Dabie mountain pulse and the Chaohu City plain transition zone place, being located in the center of Anhui province, is the gravest area of the loss of soil and water in Anhui Province. Shucheng County's inshore geography is quite complicated, the southwest is a mountain area, central part is mound district, the northeast is plain area, and the three-level ladder distribution is obvious, the geologic structure is complicated variously; therefore the change of land use of Shucheng County has the certain typical nature. Main research results originally in the article are as follows:1. Taking Landsat TM of 1987 year and ETM+ of 2000 year as main data sources .First, the images were processed by ERDAS IMAGINE8.7. Then synthesize to make use of supervised classification and the visual interpretation two methods to carry on the land use classification to Shucheng County, and obtains two issue of land use landscape classification chart. The land use landscape type boundary's accuracy has solved in the remote sensing imaging computer classification process through the union visual interpretation and the manual digitization classification.2. Calculates the Shucheng County's each kind of landscape index of two issue of land use landscape classification chart with the Fragstats software. Carries on the spatial superimposition to two issues of land use landscape classification chart, obtains the Shucheng County various land use landscape type change concrete process during 13 years. Carries on the analysis to the Shucheng County landscape pattern and various land use landscape type space and time distribution change using the landscape ecology principle and obtains each kind of data, Main conclusions are as follows:(1) Shucheng County's two issue of land use landscape classification charts, with various landscapes type area, the forest land > farmland >constructs land >waters >grassland >non-used land. During 13 years, the total quantity of Shucheng County's patches are increasing, the patches average area are decreasing gradually. Every land use landscape type's area had the change, in which the farmland is the biggest; following is the forest land, the constructs land, the waters, the grassland and the non-used land.(2) From 1987 to 2000, landscape types have had very big changing, and this kind of transformed existence obvious regional disparity. In the north-west mountainous region landscape area and the middle earthen mound hillock landscape area, various land use landscape types' change are not obvious, Main transformed tendency is the forest land and the stocked land in the forest land has had the big transformation, and had few farmland shift to the forest land. The north -eastern plain landscape area, various land use landscape type had the big transformation, Main transformed tendency is form farmland to constructs land, waters, forest land and so on, and the constructs land's transformation is biggest .(3) The landscape pattern of Shucheng County has been changing during the research period, the overall tendency is the landscape diversity and the urban landscape fragment degree increased, and various landscapes shape tends to gradually complex. But various landscapes area landscape pattern actually presented the different change tendency.3. Base on the analysis results, and in view of the Shucheng County various landscapes area characteristic, analyzes the question, which in its land use process, and proposes the countermeasure.