Dynamic Change Of Grassland And Analysis Of Driving Forces The Case Study In West Wuzhumuqin County

Land use is the process of the performance of the use of land to meet their own needs, the prairie grassland in pastoral area as one of the important type of land use.Has a pivotal position in the development of animal husbandry.The grassland resources in biodiversity conservation at the same time,maintain balance in grassland ecosystem has an irreplaceable role.The grassland resources have an irreplaceable role in biodiversity conservation and maintain balance in grassland ecosystem at the same time.So the protection of grassland resources which can make grassland and other land use to the coordinated development to achieve sustainable use of land resources and the benign development of social economy is has a great importance meaning.To do this from the quantity, quality and spatial change of grassland for a long time sequence research was found problems occurring in the process of grassland utilization, thus to forestall and prevent the sustainable development of grassland not reasonable using behavior and protection are have great importance significance.In this paper, Inner Mongolia West Wuzhumuqin county( referred to as xiwuqi in map) as the study area, using1990,2000 and 2013 the third phase of remote sensing image and combined with map of xiwuqi statistical yearbook, weather, climate and pasture resources survey data be done the development pattern of the spatial distribution of grassland resource in the map of xiwuqi, temporal-spatial change and its driving mechanism research,supported by RS and GIS technology.The main results were as follows:(1) Building the West Wuzhumuqin county land use from 1990 to 2013 and the present situation of grassland and dynamic space-time data set. The West Wuzhumuqin county land use from 1990 to 2013 and the present situation of grassland and dynamic space-time data set are built.(2) To analysis between 1990 and 2013 West Wuzhumuqin county land use change situation,grassland,wetland and water area are decreased, and the reduced area are 304.72 km~2, 18.87 km~2, 2.37 km~2, and other types of land area has increased,land for industrial and mining warehouse and transportation are change fastest,and the increased area are 124.46 km~2 and 124.46 km~2 followed by forest land, urban and rural construction land, land for construction purposes;Increase the source of almost all the various land use types are from grassland,saline-alkali land to grassland degradation and the area of the sand aggregate accounting for the grassland reduce area 23% of the total;Mining accounting for the grassland reduce area 38%;villages and towns accounting for the grassland reduce area 18% of the total construction land;transportation, land and forest land accounting for the grassland reduce area 18%.(3)Analysising West Wuzhumuqin county land use situation in 2013,Grassland as the main land use types, area of 19156.7252 km~2, all the West Wuzhumuqin county are within the territory of distribution.According to the three of grassland vegetation coverage will divide the three class, high coverage grassland area is 3470.9868 km~2, accounting for 18.12% of the total area of the grassland,the coverage of grassland area is 13144.8879 km~2, accounting for 68.62% of the total area of the grassland,low coverage grassland area is 2507.7644 km~2, accounting for 13.26% of the total area of the grassland, grassland overall quality in the average state.(4) Grassland inside the class changes are analyzed, between 1990 and 2013, the high coverage grassland were decreased by 1317.68 km~2,coverage of grassland were increased by 163.52 km~2,low coverage grassland reduced 1064.71 km~2, 1990-2000, a total of 2000-2013 were increased by 214.27 km~2.Regional distribution, high coverage grassland are mainly distributed in south and south-east of Haoletugaole town and Bayanhua town in 1990, the south and east are decreased in 2000, of southeast south Haoletugaole town nearly half of the high coverage grass coverage in the grass to change,high coverage grassland along the base of Gaorihan town, north and south have a article belt in southeast part of distribution 2000 to 2013, Jirengaole town in southern part, high grassland and coverage grassland are distributed with alternate;Coverage of grassland in the concentrated distribution in northern Pakistan, Bayanhushu wood, Gaorihan town and Bayanhua town northeast and south Jirengaole town of the western half;low coverage grassland concentrated in the west,mainly distributed in the he bayanhushu the west end of sappan wood and Jirengaole the town west in 1990,low coverage grassland since 2000 on the basis of the original along the Bayanhushu wood northern eastward,Its distribution scope has been expanded to the west and northwest.(5)West Wuzhumuqin county grassland resources space time changes are affected by climate change,the human land use activities and the comprehensive effects of national land use policy.Dry climate in a region which is the main driving force of grassland ecosystem changes.Under the background of the relevant national policy implementation quality change have different degree of impact on the number of grassland,the change of industrial structure will leading to the expansion of the other land use types and the grassland continues to decline,the rapid growth of the population of the growing demand for the direct and indirect contributed to one of the reasons why the corresponding changes in quantity and quality of grassland.