| 北方13省土地利用/覆盖动态变化分析 |
| |
| 引用本文： | 李月臣,刘春霞.北方13省土地利用/覆盖动态变化分析[J].地理科学,2007,27(1):45-52. |
| |
| 作者姓名： | 李月臣 刘春霞 |
| |
| 作者单位： | 1. 重庆师范大学地理科学学院, 重庆, 400047;2. GIS应用研究所重庆市重点实验室, 重庆, 400047;3. 北京师范大学资源学院环境演变与自然灾害教育部重点实验室, 北京, 100875 |
| |
| 基金项目： | 重庆师范大学博士科研启动基金，中国科学院杰出海外学者基金(2001-1-13)，国家重点基础研究发展规划项目(G2000018604、G1999043406-03)资助 |
| |
| 摘 要： | 对北方13省1989~1999年的宏观土地利用/覆盖动态变化进行分析。结果表明:研究区草地、水体的退化以及未利用地的不断扩展增加区域生态系统的敏感性和脆弱性,生态环境压力进一步增大;土地利用/覆盖总体破碎度不断增加,土地利用向着多样化和均质化方向发展;10年间,各种土地利用/覆盖类型重心的空间位置均有所变化。水体变化最明显,其次为未利用地、耕地和城建用地;各种土地利用/覆盖类型变化表现出明显的区域差异。
|
| 关 键 词： | 土地利用/覆盖 变化 北方13省 |
| 文章编号： | 1000-0690（2007）01-0045-08 |
| 收稿时间： | 07 22 2005 12:00AM |
| 修稿时间： | 2005-07-222006-11-25 |
Land Use/Cover Dynamic Changes in the Northern China |
| |
| LI Yue-Chen,LIU Chun-Xia.Land Use/Cover Dynamic Changes in the Northern China[J].Scientia Geographica Sinica,2007,27(1):45-52. |
| |
| Authors: | LI Yue-Chen LIU Chun-Xia |
| |
| Institution: | 1. College of Geography Science, Chongqing Normal University, Chongqing 400047;2. Key Laboratory of GIS Application, Chongqing 400047;3. Key Laboratory of Environmental Change and Natural Disaster, Ministry of Education of China, College of Resources Science & Technology, Beijing Normal University, Beijing 100875 |
| |
| Abstract: | The eco-environment of the 13 provinces in the northern China is relatively fragile.In order to understand the eco-environment feedback mechanism and seek a way to optimize land use/cover spatial pattern under ecological security,land use/cover dynamic changes in the northern China from 1989 to 1999 was investigated by RS and GIS.The results show that:(1) Grassland,unused land and forestland were the main land use/cover types in the research areas.In the study period,land use/cover change greatly.Although the eco-environment policies of government resulted in some original farmland being returned to grassland and forestland,the excessive reclamation in the region turned more grassland and forestland into farmland simultaneously.(2) Human activities comprehensively affected land use/cover dynamic change in the study area.The heterogeneity of the whole landscape increased.The land use/cover spatial structure tended to be more diversified and even.(3) The center of gravity of all land use/cover types changed.The water body is the most distinct and unused land,farmland and urban land follow.(4) Land use/cover changes show regional district differences. |
| |
| Keywords: | land use land cover northern China |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地理科学》浏览原始摘要信息 |
| 点击此处可从《地理科学》下载免费的PDF全文 |
|
