Study On The Land Use/Cover Change And Analyze Driving Forces Of Bosten Lake Basin

Land use/cover change (LUCC) is an important part of global environmentalchange and one of the main reasons.With the influence of human activities on theenvironment, population, resources and environment problem increasinglyprominent, the resulting land use/cover change has been a concern.Will charactersriver basin as the research object, this study,1990、2000、2006、2000and the2013years Landsat TM/ETM+remote sensing image as the foundation, using Arcgisand ENVI remote sensing image processing software, the characters in23years inspatial and temporal variation characteristics of land use/cover are analyzed.At thesame time, using the data of meteorological data and social economic data, for thetime and space change of land use/cover driving factors are analyzed.The analysisresults show that the：(1) nearly23years, effluents watershed land use pattern has changeddramatically.Cultivated land increased from1475.02km21475.02km2, a net gain of1329km2, the growth rate of79.34%;Construction land increased from323km2,496km2, a net gain of173km2, the growth rate of53%;Waters by995.4km2to reduce989.03km2;Grassland area of458km2reduced from458km2;The wetland area by413km2reduce389km2;Unused reduced from5106km2land area of3827.81km2。(2) transfer matrix analysis.On the whole from1990to2013various land typesprominent conversion to each other.Water main conversion for wetland, arableland.Converted to construction land unused.Wetland into grassland andunused.Cultivated land into construction land, grassland and unused.Grass isconverted to construction land and unused land and cultivated land.Unused land intocultivated land, construction land and grassland。(3) the change range of the study area is analyzed.In different time of land typeshave different amplitude increase or decrease, on the whole from1990to2013various land types in the area of the fastest is cultivated land and construction landchange.Through the comprehensive analysis of land use degree, land use degreechange characters of each period amount greater than zero, the composite indexincreased gradually, open valley reaches a certain extent.Development speed alsogradually increased。(4) the LUCC driving force analysis.Selection of the study area of natural andhuman driving factors analysis, natural factors of precipitation, evaporation,temperature etc were analyzed.Humanistic factors of the total population, arable land,the output value of agriculture, the rural labor appropriate amount, the number oflivestock in bend, fertilizer, agricultural industrial production, construction investment factors such as principal component analysis.Structure is: to study theregional rainfall in40years, annual evaporation, annual average temperature risingvolatility, and the annual evaporation is greater than precipitation.The climateleading to water area and wetland area decrease.Various social economic drivingforce factors of population, rural labor force, the output value of agriculture, thefactors such as cultivated land area and study area land use has strong positivecorrelation, these factors are main factors that influence the change of LUCC, whichis the main reason of population growth。...