| 2000-2013年甘肃敦煌市土地利用变化及其驱动因素分析 |
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| 引用本文： | 杨绮丽,何政伟.2000-2013年甘肃敦煌市土地利用变化及其驱动因素分析[J].冰川冻土,2016,38(2):558-566. |
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| 作者姓名： | 杨绮丽 何政伟 |
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| 作者单位： | 成都理工大学地球科学学院,四川成都,610059;成都理工大学地球科学学院，四川成都610059;成都理工大学地质灾害防治与地质环境保护国家重点实验室，四川成都610059 |
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| 基金项目： | 中国科学院科技服务网络计划(STS计划)项目“地面-遥感数据信息平台建设”(KFJ-EW-STS-006) |
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| 摘 要： | 将2000、2005、2010和2013年的土地利用类型数据与GIS技术结合，获取了甘肃省敦煌市近年来土地利用类型动态变化特征，并结合该地区的2000年以来社会经济和自然环境的资料，分析土地利用类型变化的驱动因素.结果表明：在2000-2013年期间，敦煌市城市化发展迅速，耕地、建设用地和水域面积明显增加，2000-2013年的14建分别增长了10.0%、42.2%和2.5%；草地和未利用土地面积呈减少趋势，分别减少了2.1%和0.1%；林地、沙地变化程度较小.7种土地利用类型之间相互转换，主要的转移方向为草地、未利用土地向耕地转移，未利用土地向建设用地和水域转变.对影响土地利用变化的而主要驱动因素进行主成分分析，结果显示经济发展、国家政策等人类活动为主要的影响因素，自然因素为辅.
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| 关 键 词： | 敦煌市 土地利用变化 驱动因素 主成分分析 |
Land use/land cover changes and their driving factors in Dunhuang City of Gansu Province during 2010-2013 |
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| YANG Qili,HE Zhengwei.Land use/land cover changes and their driving factors in Dunhuang City of Gansu Province during 2010-2013[J].Journal of Glaciology and Geocryology,2016,38(2):558-566. |
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| Authors: | YANG Qili HE Zhengwei |
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| Abstract: | In this paper,by using the land use type data of 2000,2005,2010 and 2013,combining with GIS technology,the dynamic change characteristics of land use type in Dunhuang City in recent years are obtained. The driving factors of land use type change since 2000 were analyzed,combined with the data of social economy and natural environment. It is found that in the period from 2000 to 2013,urbanization had rapidly developed, cultivated land,construction land and water area had increased significantly in the city,with the increasing rates of 10%,42.2% and 2.5%,respectively. Grassland and unused land areas had decreased,with the decreasing rates of 2.1%and 0.1%,respectively. The change in forest land and sandy land had be minor. There was mutual transformation of land use types with the major transfer directions of grassland and unused land transferring to cultivated land and unused land transferring to construction land and water area. Principal component analysis was used to analyze the main factors which controlled the land use change. It is revealed that economic develop-ment,national policy and other human activities are the dominating factors,followed by natural factors. |
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| Keywords: | Dunhuang City changes of land use driving factors principle component analysis |
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