| 重庆市土地利用时间动态变化特征及原因分析 |
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| 引用本文： | 吴涛.重庆市土地利用时间动态变化特征及原因分析[J].内江师范学院学报,2013(10):63-67. |
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| 作者姓名： | 吴涛 |
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| 作者单位： | 四川师范大学西南土地资源评价与监测教育部重点实验室／／地理与资源科学学院,四川成都610066 |
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| 摘 要： | 基于2003-2009年土地利用类型数据，在分析重庆市土地利用时间动态变化特征及原因的基础上得出结论：土地利用类型以耕地、林地为主，但变化较大；耕地、未利用地呈现下降趋势，而园地、林地与建设用地增幅较大；土地利用综合度指数稳定在245246之间，虽利用强度较大，但仍有提升空间；土地利用多样化指数与均匀度指数逐渐变大，而优势度指数逐渐变小，说明土地利用程度增强，土地覆被破碎化趋势明显；城镇建设用地扩张、农业结构调整与生态退耕、三峡库区水体淹没是导致重庆市土地利用类型发生变化的主要原因．基于此，应强化土地的科学有序利用，提高土地利用效益的综合水平．
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| 关 键 词： | 重庆市 土地利用变化 动态度 综合度指数 空间格局 |
Analysis on the Features and Reason of Land Use Time Dynamic Change of Chongqing |
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| WU Tao.Analysis on the Features and Reason of Land Use Time Dynamic Change of Chongqing[J].Journal of Neijiang Teachers College,2013(10):63-67. |
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| Authors: | WU Tao |
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| Institution: | WU Tao (Key Laboratory of Land Resources Evaluation and Monitoring in Southwest// The Faculty of Geography Resources Science, Sichuan Normal University, Chengdu, Sichuan 610066, China) |
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| Abstract: | With the development of social economy and the acceleration of the urbanization process, the land use of Chongqing had undergone significant changes. Based on the land use types datum from 2003 to 2009, the features and reason of land use time dynamic change of Chongqing are analyzed, and the following conclusions were found： First, the pattern of land use is mainly composed of cultivated land, forest land, but has undergone dramatic changes; Second, there was a decreasing tendency of cultivated land, unutilized land, and a large increase in garden plot, forest land and construction land; Third, the index of land use comprehensive degree stayed at 245 to 246, it was a little large but still with climbing space ; Fourth, land use diversity index and fractal dimension strengthened gradually, while dominance index was declining gradually, which shows that the degree of land use was intensified, and the trend of land cover fragmentation was obvious; Fifth, the expansion of urban construction land, the adjustment of agricultural structure and ecological restoration, water flooding in three gorges reservoir area were responsible for the changes in land use types of Chongqing. Based on our finding, the paper calls for the scientific and ordered use of land resources thus to promote the comprehensive benefits of land use. |
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| Keywords: | Chongqing City land use change dynamic degree comprehensive degree index spatial layout |
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