|
|||||
|
|
| 区域沙漠化程度评价研究进展、问题及分析 | |
| 引用本文： | 康相武,吴绍洪,杨勤业,夏富强,马欣,刘自强,杨佩国.区域沙漠化程度评价研究进展、问题及分析[J].干旱区地理,2005,28(3):330-335. |
| 作者姓名： | 康相武 吴绍洪 杨勤业 夏富强 马欣 刘自强 杨佩国 |
| 作者单位： | 1. 中国科学院地理科学与资源研究所,北京,100101;中国科学院研究生院,北京,100039 2. 中国科学院地理科学与资源研究所,北京,100101 3. 新疆大学资源环境科学学院,新疆,乌鲁木齐,830046 4. 新疆师范大学生命与环境科学学院,新疆,乌鲁木齐,830054 |
| 基金项目： | 中国科学院地理科学与资源研究所知识创新工程领域前沿项目(CXIOG-A02-03)研究成果 |
| 摘 要： | 通过回顾景观尺度及区域尺度的沙漠化程度评价发展过程，概括了国内外典型的区域沙漠化程度评价方法，通过假设各种情景分析、总结了目前各类区域沙漠化程度评价方法中存在的典型共性问题：(1)当被比较评价的几个区域中各类沙化土地面积相等时，目前所有的评价模型失去比较能力；(2)忽略了不同类型沙化土地空间分布的生态学意义及其对区域沙化整体程度的影响；(3)目前考虑了不同类型沙化土地空间分布的模型由于指标因子选择不恰当其评价结果在有些情况下与实际情况有距离。提出了在现有评价方法的基础上根据景观生态学原理引进景观生态学方法，特别是景观格局分析的方法，可以弥补现有区域沙漠化程度评价方法中存在的缺陷和不足，并且可以使区域沙漠化程度评价具有生态学意义。 |
| 关 键 词： | 沙漠化程度评价 研究进展 区域尺度与景观尺度 景观生态学方法 |
| 文章编号： | 1000-6060(2005)03-0330-06 |
| 修稿时间： | 2004年7月12日 |
Research Progresses, Problems and Analyses of the Evaluation on Regional Sandy Desertification |
|
| KANG Xiang-wu,WU Shao-hong,YANG Qin-ye,XIA Fu-qiang,MA Xin,LIU Zi-qiang,YANG Pei-guo.Research Progresses, Problems and Analyses of the Evaluation on Regional Sandy Desertification[J].Arid Land Geography,2005,28(3):330-335. | |
| Authors: | KANG Xiang-wu WU Shao-hong YANG Qin-ye XIA Fu-qiang MA Xin LIU Zi-qiang YANG Pei-guo |
| Institution: | KANG Xiang-wu1,2 WU Shao-hong1 YANG Qin-ye1 XIA Fu-qiang3 MA Xin4 LIU Zi-qiang4 YANG Pei-guo1 |
| Abstract: | In this paper, the research progresses of the evaluation about sandy desertification degree on landscape and regional scales are reviewed, and several typical domestic and overseas methods of evaluating regional sandy desertification are summed up. By means of scenario hypothesis the typical common problems in all kinds of methods of evaluating regional sandy desertification degree are analyzed. The existing problems are as follows: (1) When the areas of all the evaluated sandy desertified land types in several regions are equal to, all the current evaluation models fail to compare their regional sandy desertification; (2) The ecological significance and impacts of spatial distribution of different desertified land types on regional desertification degree are ignored in all the current evaluation models; (3) The evaluation results of the models in which the impacts of spatial distribution of different desertified land types are considered do not accord with the practical instances, because the selected indexes for explaining the ecological significance of spatial distribution of the different desertified land types are not appropriate. In order to overcome the problems in evaluating the regional sandy desertification degree, it is suggested to introduce the methods of landscape ecology, especially landscape pattern analysis methods, into the evaluation of regional sandy desertification degree based on the landscape ecology principles and the present evaluation methods, thus, the problems in present evaluation methods of regional sandy desertification degree may be avoided, and the regional sandy desertification evaluation will gradually possess ecological significance. |
| Keywords: | evaluation of sandy desertification degree research progress regional and landscape scales landscape ecology method |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |