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首页> 外文会议>Remote sensing for environmental monitoring, GIS applications, and geology IX >Analysis of land use change in the Manasi oasis of arid region,northwestern China using remote sensing and GIS
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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：西北干旱区玛纳斯绿洲土地利用变化的遥感与GIS分析

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The objective of the study was to quantify and analyze characteristics of LUCC in the spatial-temporal. Taking Manasi oasis in the north slope of Tianshan Mountains as the study area, we obtained the two date Landsat TM,ETM images of the late 1980s and the early 2000s. Radiometric correction was conducted using not less than 30 ground control points based on 1:500,000 topographical maps. A land use field investigation was carried out in order to have a general understanding to the area. Secondly, Land use maps were acquired by visual interpretation using EDRAS IMAGINE 8.7 and Arcinfo GIS 9.0. The conversion matrix of land use change was calculated to acquire the transition rates of land use change from the late 1980s to the early 2000s.The characteristics of LUCC in the spatial-temporal were studied and analyzed by adopting the land use dynamic degree model, conversion matrix model. Thirdly, landscape indices including landscape 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 11 years, the areas of cultivated land, urban-built up, water land and marsh land increased, while those of grassland and forestland, 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. Favorable disturbance of human activity to landscape has made the oasis expansion process larger than the oasis desertification process.
机译：这项研究的目的是量化和分析时空LUCC的特征。以天山北坡玛纳斯绿洲为研究区域，获得了1980年代末和2000年代初的两个Landsat TM，ETM影像。基于1：500,000地形图，使用不少于30个地面控制点进行了辐射校正。进行了土地利用现场调查，以便对该地区有一个总体了解。其次，使用EDRAS IMAGINE 8.7和Arcinfo GIS 9.0通过视觉解释获取土地使用图。计算了土地利用变化的转换矩阵，以获取1980年代后期至2000年代初的土地利用变化的转化率。采用土地利用动态度模型，研究了土地利用变化的时空特征。矩阵模型。第三，选择景观指数，包括景观百分比（％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），以量化土地利用的景观格局变化。结果表明，在这11年中，耕地，城市建成区，水地和沼泽地的面积增加了，草地和林地，盐碱地和沙地的面积减少了。草原被转变为耕地并被城市建成。玛纳斯绿洲的景观变得更加规则，连续和均匀。人类活动对景观的有利干扰使绿洲的扩张过程大于绿洲的荒漠化过程。

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