Study On Land Use/Cover Change(LUCC) In The Region Of Barenzhelimu Based On Rs And GIS Technology

On the basis of RS and GIS,the paper extracted the types, positions andareas of the two-phase land use change of TM remote sensing images in1999and ETM+remote sensing images in2009in the region ofBarenzhelimu,based on the processing and interpretation of theimages.Various kinds of mathematical models were used for further analysisof the features,regulation,procedure and driving force of the dynamic changeof land use/cover in the region of Barenzhelimu,and the models included theshifi matrix of land use/cover,land use dynamic degree,land use degree indexand so on.The results showed the following aspects of the study.（1）The area of each type of land use/cover in the region ofBarenzhelimu from1999to2009was changing obviously.The area of eachtype changed in different degrees.The area of grass land changed biggest,andthen was sand land and cultivated land.The area of land for otherconstructions changed least,and the area of flood sand land also did notchange much.The grass land was the only type of which area wasdecreasing,but its absolute value was the biggest.The area of grass land wasdecreasing188784.3hm2.The area of other types of land all hadincreasing,and their area was arranged from big to small as: sand land＞cultivated land＞forest land＞bare land＞other type of land＞settlementplace＞flood sand land＞land for other constructions.The area of sand land was increasing86145.5hm2, and the cultivated land’s area was increasing50003.6hm2.It could be seen that during the ten years much grass land wasoccupied and developed for cultivated land in the region of Barenzhelimu,inaddition the protection of grass land and cultivated land was notenough,therefore made much land desertification.(2)There was an obvious change of land use/cover types from1999to2009in the region of Barenzhelimu.The grass land conversion output was themost,and the number was190751.2hm2.Next was sand land and its numberwas3956.9hm2.The output area was arranged from big to small as: grass land＞sand land＞cultivated land＞bare land＞flood sand land＞forest land＞settlement place＞other type of land＞land for other constructions.The sandland conversion input was the most,and the number was90102.4hm2,Next wascultivated land and its number was52629.9hm2. The input area was arrangedfrom big to small as: grass land＞sand land＞cultivated land＞bare land＞flood sand land＞forest land＞settlement place＞other type of land＞land forother constructions.The grass land output was the conversion to sand land andcultivated land,and the main input sources were the cultivated land and floodsand land.However,original grass land still kept the highest proportion.Thecultivated land output was the conversion to sand land,grass land andsettlement placeand so on,but original cultivated land still kept the highestproportion.The main input source of the cultivated land was the grass land.The bare land output was the conversion to settlement place and sand land,and the main input source was the grass land. The sand land output wasthe conversion to bare land and cultivated land,and the main input source wasthe grass land.Although the others were changing obviously,the proportionwas small.(3)It was indicated from the trend and state index of the land use/coverthat the conversion of land use/cover was whole in a extremelyno-equilibrium state from1999to2009in the region of Barenzhelimu.Exceptthe land for other constructions,the dynamic change degree of grass land wasthe biggest,which meaned the scale of grass land was decreasingconstantly.The dynamic change degree of cultivated land,settlementplace,forest land,other type of land and sand land was all greater than0.9,which meaned the area of these types of lang use was expandingrapidly.The scale of grass land developed in reduced direction,showing thefalling trend.However,except the grass land,the other types of land alldeveloped in increased direction,showing the rising trend.(4)It was indicated from the result of analysis of degree change of landresources utilization that the comprehensive variation quantity of the land usedegree in the region of Barenzhelimu was197.142in1999and177.983in2009.The land use degree could only reach the45%of the theory,whichdemonstrated that the land use degree was very low.However,thecomprehensive index variation quantity of the land use degree in the region ofBarenzhelimu was-19.159from the year1999to2009,with the variation rate was-9.718%，which showed that the land use degree failed to reach thedevelopment stage in the region of Barenzhelimu and the adjustment stagewas not obvious.Because of the recession of land use,it needed control intime.(5)After the analysis of the driving force of LUCC in the region ofBarenzhelimu,it was shown that the consequence of LUCC was caused byboth the natural factors and human factors.