| 1999-2009年青海省德令哈市土地利用/覆盖变化特征 |
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| 引用本文： | 任秀金,盖艾鸿,宋金蕊.1999-2009年青海省德令哈市土地利用/覆盖变化特征[J].水土保持通报,2014(5):248-253. |
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| 作者姓名： | 任秀金 盖艾鸿 宋金蕊 |
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| 作者单位： | 甘肃农业大学 资源与环境学院, 甘肃 兰州 730070;甘肃农业大学 资源与环境学院, 甘肃 兰州 730070;甘肃农业大学 资源与环境学院, 甘肃 兰州 730070 |
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| 基金项目： | 海西州国土资源局"青海省海西州土地整治规划"(037-036164) |
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| 摘 要： | 以1999年的ETM数据和2009年的矢量数据为数据源,在RS和GIS技术的支持下,分析了青海省德令哈市1999-2009年土地利用/覆盖的时空变化特征,并借助马尔科夫模型,预测了德令哈市未来20 a的土地利用/覆盖演变趋势。结果表明,德令哈市土地利用类型以草地为主。在1999-2009年这10 a中,草地面积减少最多,减少部分主要退化成未利用地;未利用地减少面积仅次于草地,减少部分主要转化成林地;耕地减少面积位居第3,减少部分主要转化成林地;林地增加面积最多,主要来自耕地和未利用地的转化;耕地的空间动态度最大,其次为林地。在未来20 a中,德令哈市耕地和草地的面积会持续减少,林地和建设用地的面积将继续增加。
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| 关 键 词： | 土地利用/覆盖 空间动态 演变趋势 马尔科夫模型 德令哈市 |
| 收稿时间： | 2013/8/19 0:00:00 |
| 修稿时间： | 2013/10/23 0:00:00 |
Change Characteristics of Land Use/Cover in Delhi City of Qinghai Province from 1999 to 2009 |
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| REN Xiu-jin,GAI Ai-hong and SONG Jin-rui.Change Characteristics of Land Use/Cover in Delhi City of Qinghai Province from 1999 to 2009[J].Bulletin of Soil and Water Conservation,2014(5):248-253. |
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| Authors: | REN Xiu-jin GAI Ai-hong and SONG Jin-rui |
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| Institution: | College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China;College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China;College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, Gansu 730070, China |
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| Abstract: | Based on RS and GIS, taking the ETM data in 1999, vector data in 2009 as the data source, the temperal-spatial change characteristics of land use/cover of Delhi City in Qinghai Province from 1999 to 2009 were analyzed, and the evolution trend of land use/cover in the next 20 years was predicted with the Markov model. The results showed that, grass land was the main type of land use, the area of grassland reduced largestly, and the reduced area degenerated to unused land. The area of unused land reduced was next only to grassland, and the reduced area mainly transformed to woodland. The area of arable land reduced next to unused land, and the reduced area also mainly transformed to woodland. The area of woodland increased at most, mainly from the conversion of arable land and unused land. The degree of spatial dynamics of arable land was the biggest, followed by woodland. In the next 20 years, the area of arable land and grassland in Delhi City will continue to decrease, and woodland and construction land continue to increase. |
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| Keywords: | land use/cover spatial dynamics evolution trend Markov model Delhi City of Qinghai Province |
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