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| 基于地下水位下降速度分区的黄淮海平原土地利用变化特征分析 |
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吴芳芳1,2, 孔祥斌1,2, 雷鸣1,2, 张雪靓1,2, 张蚌蚌1,2
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| (1.中国农业大学 资源与环境学院, 北京 100193;2.国土资源部农用地质量与监测重点实验室, 北京 100193) |
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| 摘要: |
| 利用土地利用动态度、空间转移矩阵、回归模型等研究方法，基于1990和2008年2期土地利用现状数据[1]，对黄淮海平原地下水位下降速度不同分区的土地利用变化时空特征以及土地利用动态度与地下水位下降速度的相关性进行研究。结果表明：1）除建设用地数量增加外，黄淮海平原区的其他地类数量均有不同程度减少；2）各地类的土地利用动态度在不同分区具有一定规律性，城镇用地的动态度最大，表明其扩张速度最快；3）各地类的相互转化中，耕地向其他地类转化是主要的转化方式，快速下降区最为突出。耕地是建设用地增加的主要来源，生态用地是补充耕地的主要来源；4）水田动态度与地下水位下降速度呈负相关，城镇用地、农村居民点动态度与之呈正相关，农村居民点、城镇用地扩张对地下水位下降具有明显的正向驱动作用。建议在不同地下水位下降程度区域内，对土地利用类型和强度进行适宜的调整、优化，保障区域生态安全、粮食安全，实现区域可持续发展。 |
| 关键词: 土地利用变化 地下水位下降 空间转化 相关性 黄淮海平原 |
| DOI：10.11841/j.issn.1007-4333.2016.12.13 |
| 投稿时间：2016-01-27 |
| 基金项目:国家社会科学基金重点项目（14AZD031） |
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| Analysis of land use change in HHH Plains based on the groundwater level dropping speed regionalization |
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WU Fang-fang1,2, KONG Xiang-bin1,2, LEI Ming1,2, ZHANG Xue-liang1,2, ZHANG Bang-bang1,2
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| (1.College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China;2.Key Laboratory for Farmland Quality and Monitoring of National Ministry of Land Resources, Beijing 100193, China) |
| Abstract: |
| Based on land use status data in 1990 and 2008 land use dynamic degree[1],space transfer matrix and regression model were adopted to analyze the temporal and spatial characteristics of land use change and the correlation between land use dynamic degree and ground water level dropping speed in regionalization,The results show that:1) In addition to the increase in the number of construction land,the number of all other types reduce to some different extent in HHH plains;2) Each land use type's dynamic degree has a certain regularity in the regionalization,and the urban land use dynamic degree is the highest,indicating its fastest rate of expansion;3) Transformation of arable land to other land types is the main way of transformation,which is more obvious in the rapid dropping area.Arable land is the main source of construction land increasing,while ecological land become the main supplementary of arable land;4) The paddy field dynamic degree is negatively related to the ground water level dropping speed,and the urban land and rural residential land dynamic degree are positively related,indicating that the rapid expansion of urban land and rural residential land is a positive driving factor for dropping in groundwater level.To adjust and optimize the type and intensity of land use suitably in the ground water level dropping speed regionalization to safeguard regional ecological security and food security and achieve sustainable development in HHH Plains are recommended in this study. |
| Key words: land use change ground water level dropping spatial transformation correlation HHH Plains |
