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Analysis of land use change in the Manasi oasis of arid region,northwestern China using remote sensing and GIS

机译:利用遥感和GIS分析了西北地区干旱地区法兰西绿洲土地利用变化

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The objective of the study was to quantify and analyze characteristics of LUCC in the spatial-temporal. Taking Manasioasis in the north slope of Tianshan Mountains as the study area, we obtained the two date Landsat TM,ETM images ofthe late 1980s and the early 2000s. Radiometric correction was conducted using not less than 30 ground control pointsbased on 1:500,000 topographical maps. A land use field investigation was carried out in order to have a generalunderstanding to the area. Secondly, Land use maps were acquired by visual interpretation using EDRAS IMAGINE 8.7and Arcinfo GIS 9.0. The conversion matrix of land use change was calculated to acquire the transition rates of land usechange from the late 1980s to the early 2000s.The characteristics of LUCC in the spatial-temporal were studied andanalyzed by adopting the land use dynamic degree model, conversion matrix model. Thirdly, landscape indices includinglandscape percentage (%land), mean patch size (MPS), patch density (PD), area-weighted mean patch fractal dimension(AWMPFD) were selected to quantify landscape pattern change of land use. The results indicated that during the 11years, the areas of cultivated land, urban-built up, water land and marsh land increased, while those of grassland andforestland, saline and alkaline land and sand land decreased. The grassland was converted to cultivated land and urban-built up. The landscape of the Manasi oasis has become more regularity, continuous and homogeneous. Favorabledisturbance of human activity to landscape has made the oasis expansion process larger than the oasis desertificationprocess.
机译:这项研究的目的是量化和分析在时空LUCC的特性。以Manasioasis天山为研究区的北坡,我们获得了两个日期的Landsat TM,ETM图像后期国税发20世纪80年代和21世纪初。 500000地形图:辐射校正用未pointsbased 1小于30地面控制进行。土地利用野外调查是为了有一个generalunderstanding到该地区进行。其次,土地利用地图由使用EDRAS IMAGINE 8.7and ARCINFO GIS 9.0目视解译获得的。计算土地利用变化的转换矩阵,从上世纪80年代末在时空LUCC的早期2000s.The特性取得土地usechange的升学率采用土地利用动态度模型进行了探索研究andanalyzed,转换矩阵模型。第三,景观指数includinglandscape百分比(%土地),平均斑块大小(MPS),斑块密度(PD),面积加权平均斑块分形维数(AWMPFD)被选定的土地利用的景观进行量化图案变化。结果表明,在11年期间,耕地面积,城市建起来,水和土地的沼泽地增加,而那些草原andforestland,盐碱地和沙地的下降。草地转化为耕地和城市建立起来。玛纳斯绿洲的景观变得更加规律,连续均匀。人类活动的Favorabledisturbance到景观取得了绿洲膨胀过程比绿洲desertificationprocess大。

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