Dynamic Changes And Driving Force Analysis Of Land Use In Mid-Western Parts Of Inner Mongolia Based On Remote Sensing And GIS

Land use and land cover change is the front and topic research of global environmental changes, but driving force research of land use and land cover change is also key study content of this research. Inner Mongolia Normal University has taken on the sub-subject"Dynamic Change of Land Use in the Mid-western Part of Inner Mongolia"in the National Land Use and Land Cover Dynamic Change (year 2000-2005) Project from 2006, which is taken the lead by Institute of Remote Sensing Applications Chinese Academy of Sciences. This thesis is accomplished under the up-hold of this subject. This thesis makes use of remote sensing,technique of GIS and mathematical statistics methods, analyze the present condition and dynamic change of land use in the Mid-western Part of Inner Mongolia and tempt to design query system of geographical information system and carry through clustering analysis on the dynamic change of land use. On this basis this thesis selects two typical regions Duolun town Xilinguole League and Yijinhuoluo Banner Erdos and comparatively analyses the present condition and dynamic change of land use and its driving forces in combination with topography and soil types. This text not only uses contact encoding but also tries to use BP neural network classification methods. The main study results of this thesis are as following:1. Types of Land Use in the Mid-western Part of Inner Mongolia all have variety of different degrees from 200-2005.(1) As is seen from the quantity of types of Land Use , unused land has biggest variety, area increases 250618hm~2,second is grassland, its area decreases 179723 hm~2,forest's area increases 168688 hm~2,area of city and town,factory,residential area increases 51994 hm~2,area of farm land decreases 29278 hm~2,water area increases 14255 hm~2.(2) As is seen from the conversion between types of Land Use, resides farm for forest and grassland,water area converse to unused land and grassland,forest converse to grassland,and conversion between unused land and grassland area main. Proportion of these types of land use is more than 90%, Proportion of other is less than 0.91%.(3) As is seen from the speed of changes, change speed of forest is the fastest, dynamic change degree of land use is 2.23,second is city and town,factory,residential area, its dynamic change degree of land use is 1.39,change speed of other land use is slower.(4) There is obvious regional difference in the land use changes in the Mid-western Part of Inner Mongolia. Except Wuhai, farm changes of the other 7 Leagues are higher than the average level of Mid-western Part of Inner Mongolia, farm change of Erdos is the biggest, the Bayannaoer is second, the change degree of woodland in Bayannaoer﹑Erdos and Baotou is higher than the average level of mid-western part of the Inner Mongolia. The change degree of the grassland in Xilinguole and Alashan is lower than the average level of mid-western part of the Inner Mongolia. The biggest city of the change degree of the grassland is Wuhai, the second is Bayannaoer; the water area relative rate is larger than 1;the change degree of the city country, mineral, residents of the Alashan , Erdos, Xilinguoluo is lower than the average level of mid- western part of the Inner Mongolia, the biggest city of change degree is Wuhai, the second is Baotou, Erdos, Xilinguole and Huhhot;The relative change rate of the useless land in Bayannaoer is lower than 1, other 7 Leagues changes degree of the useless land is higher than the average level of mid-western part of the Inner Mongolia. The change degree of the Huhhot is the biggest, the second is Wuhai.2. The land use of the variety is a coefficient result of the nature, social economic factor. in compare the dimensions of short time, the social economic factor is main factor of the mid-western part of the Inner Mongolia area, among them mainly include industrialization, civilization, policy induce, the supporting fond of the country resources and technique development driving factor. With the different area have the different types of soil, and social economic factor, the variety of the land use is different.3. Tempt to design query system of geographical information system can inquire the name and code of the county town ,the topography and soil types ,the soil erosion, desertification, and types of land use information in 2000and 2005 counterpart with the variety of land use types...