Research On The Temporal And Spatial Evolution Of Land Use In Fangzheng County Based On RS And GIS

In this paper,the main research object is Harbin and the City Founder County,the study of the land use of the temporal and spatial evolution.The data source comes mainly from the 2000 and 2010 Landsat TM images,while RS and GIS two technologies,built on the foundation of this region extraction in different periods land use situation,the regional land use information integration analysis,construct the model of land use change related transfer time,to discuss the cause driving force the changes of the factors of land use in this area,to provide an effective basis for the rational use of land in the area,based on the research on the basis of summarizing the spatio-temporal change of land use in the area of relevant conclusion.(1)more than 90% of land use are agricultural,forestry land,the structure is relatively simple,with the structure,the area of agricultural and forestry land is great,the structure is relatively simple to use.(2)the land use of forest land is still expanding,and the population of industrial and mining land has increased significantly in recent years.The grassland,cultivated land and unused land are gradually decreasing.Residents of industrial and mining land is the biggest change in the rate of middle age,but also the development of land change speed is slow,the speed of other land changes are very slow phenomenon.(3)the development of cultivated land and grassland,water is excessive,but the utilization rate is not high,means that the land in the process of actual use of other types of land to the three types of land area than the three other types of land to the land area to play,only the current forest and in mine development and utilization to migrant workers the degree of reduction is higher than its consumption.(4)the current reserve rate is the highest in the industrial and mining land and forest land,the residents of the industrial and mining in the first place,its unused land transfer rate is the largest,the minimum retention rate.At present,the most critical conversion of cultivated land comes from forest land.Residential and industrial land the most critical conversion from woodland and farmland,the main reasons of thisphenomenon is that the pace of urbanization is accelerating,returning farmland to forest policy implementation efforts continue to increase,the adjustment of regional agricultural structure has been increasing attention,the current source of woodland and farmland conversion is mainly grassland.