| 1990 年至2010 年农牧交错带冀蒙接壤区土地退化特点及影响因素分析 |
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| 引用本文： | 王强,康慕谊,戴诚.1990 年至2010 年农牧交错带冀蒙接壤区土地退化特点及影响因素分析[J].资源科学,2012,34(8):1508-1517. |
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| 作者姓名： | 王强 康慕谊 戴诚 |
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| 作者单位： | 北京师范大学地表过程与资源生态国家重点实验室,北京100875 北京师范大学资源学院,北京100875 |
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| 基金项目： | 国家重点基础研究发展计划项目:“中国北方草地与农牧交错带发展的可持续性原理与范式”(编号:2007CB106807);地表过程与资源生态国家重点实验室项目:“土地利用变化影响下的区域生态系统响应及适应性管理”(编号:2009-TD-03)。 |
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| 摘 要： | 本文以Landsat-TM影像、统计资料和野外调查数据为基础，借助PCC法和土地质量评价，分析冀蒙接壤区20年来土地利用状况及其生态变化，并探讨影响生态的主因。结果表明：@2000年是生态发生转折变化的分界点。2000年前生态持续退化，主要标志是林地、草地、地表水体萎缩；2000年后生态趋向恢复，主要特征是草地逐渐恢复。局部地区由于地表水体持续萎缩，生态退化较为严重；②土地退化区域较为集中：2000年前，发生于尚义县、张北县、太仆寺旗局部地区；2000年后，发生于张北县、尚义县、正蓝旗局部地区；③2000年前，退化主要发生于优等质量土地上；2000年后，优等质量土地的退化比例有所下降，中等质量土地的退化比例大幅增长；④种植业、工业用水过量是造成耕地、草地退化及水体萎缩的主因；⑤在继续坚持退耕还林（草）政策的同时，制定详细的水资源利用规划是有效遏制区域生态退化的必由之路。
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| 关 键 词： | 冀蒙接壤区 分类后比较法 土地质量评价 生态 |
| 修稿时间： | 5/6/2012 12:00:00 AM |
Land Degradation Characteristics in Hebei-Inner Mongolia Contiguous Area in the Farming-pastoral Zone of China from 1990 to 2010 |
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| WANG Qiang,KANG Muyi and DAI Cheng.Land Degradation Characteristics in Hebei-Inner Mongolia Contiguous Area in the Farming-pastoral Zone of China from 1990 to 2010[J].Resources Science,2012,34(8):1508-1517. |
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| Authors: | WANG Qiang KANG Muyi and DAI Cheng |
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| Institution: | State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China;State Key Laboratory of Earth Surface Processes and Resource Ecology, Beijing Normal University, Beijing 100875, China;College of Resources Science & Technology, Beijing Normal University, Beijing 100875, China |
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| Abstract: | Contiguous area of Hebei-Inner Mongolia is located in the middle part of econtone between farming and animal husbandry of northern China. Based on Landsat-TM data, statistical data and field survey data, quantitative transition and spatial variation in the process of land use change from 1990-2010 in contiguous area of Hebei-Inner Mongolia were analyzed with the PCC method and land quality assessment in this paper. Although more concerns were given to the change characteristics of land with different quality grades before and after implementation of the policy of Conversion of Cropland to Forest and Grassland, the research also probed into the major driving forces of ecological deterioration. The results show that: 1) The year of 2000 is a major turning point of local ecological condition. The overall ecological environment deteriorated gradually before 2000, which is demonstrated by shrinkage of woodland, grassland and water area, while ecological restoration took place after 2000, which is supported by gradual improvement of woodland and grassland. However, in some parts of the study area, surfacewater keeps shrinking and the ecological environment deteriorates seriously; 2) Land deterioration is relatively concentrative: degraded lands are mainly distributed in some areas of Shangyi, Zhangbei, Taipusiqi from 1990 to 2000, while in some areas of Zhangbei, Shangyi and Zhenglanqi from 2000 to 2010; 3) Before 2000, land degradation mainly occurred in the high quality land, but after 2000, the rate of degradation increased rapidly in the land of medium quality; 4) Excessive human activities, such as water consumption of agriculture and industry, is the main reason for degradation of arable land and grassland and water exhaustion. Based on the above findings, the paper suggests that in order to reverse the trend of ecological degradation, the study area should carry out the policy of returning farmland to grassland or forest continuously, and implement reasonable and detailed water use plan to make reasonable arrangements for agricultural production activities. |
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| Keywords: | Contiguous Area of Hebei-Inner Mongolia PCC Land quality assessment Ecology |
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