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| 基于景观格局的区域沙漠化程度评价模型构建 | |
| 引用本文： | 康相武,马欣,吴绍洪.基于景观格局的区域沙漠化程度评价模型构建[J].地理研究,2007,26(2):297-304. |
| 作者姓名： | 康相武 马欣 吴绍洪 |
| 作者单位： | 1. 中国科学技术信息研究所,北京,100038 2. 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 3. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | 国家科技部科研院所社会公益研究专项项目(2005DIA3J006)，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： | 区域沙漠化程度评价对于防沙治沙具有重要意义。本研究在当前区域沙漠化程度评价方法中补充了在不同类型沙漠化土地空间分布的生态意义及其对区域沙漠化整体程度的影响因子,使其能评价各类沙漠化土地面积相等时几个区域的沙漠化程度。本文应用景观生态学原理,通过对空间分布差异而引起生态过程不同的理论分析,筛选出表征沙漠化土地空间分布生态意义的景观格局指数——聚集度,结合遥感与地理信息系统技术构建出区域沙漠化程度评价模型,并应用该模型对内蒙古浑善达克沙地六旗县的区域沙漠化程度进行了评价。结果对该各旗县不同时期的沙漠化程度的区分度较好,按沙漠化程度的不同,提出对正蓝旗的沙漠化要加强治理,对沽源县和太仆寺旗的沙漠化应采取预防措施的区域沙漠化防治对策。 |
| 关 键 词： | 区域沙漠化程度 评价模型 景观生态 |
| 文章编号： | 1000-0585（2007）02-0297-08 |
| 收稿时间： | 2006-06-22 |
| 修稿时间： | 2006-06-22 |
Model construction of regional desertification degree assessment based on landscape pattern analysis |
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| KANG Xiang-wu,MA Xin,WU Shao-hong.Model construction of regional desertification degree assessment based on landscape pattern analysis[J].Geographical Research,2007,26(2):297-304. | |
| Authors: | KANG Xiang-wu MA Xin WU Shao-hong |
| Institution: | 1. Institution of Scientific and Technical Information of China, Beijing 100038, China; Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 3. Graduate University of the Chinese Academy of Seienees,Beijing 100049, China |
| Abstract: | The assessment on regional desertification degree is very important to prevent and control desertification.However,there are some problems about the assessment method of regional desertification degree.For example,the ecological meaning of spatial distribution of different types desertified land was ignored.And the influence of spatial distribution of different types of desertified land on overall regional desertification degree was neglected.In addition,while the area of every type of desertified land in the regions assessed is equal the assessment model fails to work.Therefore,the factor of ecological meaning of land spatial distribution on different types of sand and the factor affected the regional desertification degree should be added to the regional desertification assessment methods.To solve these problems,we selected the landscape pattern index and aggregation index according to landscape ecology principle,and applied them to construct regional desertification degree assessment model through RS and GIS technology.Finally the regional desertification degree in the six counties of Hunshandake Sandy Land was assessed by applying the model.The result suggested that this method can distinguish the desertification degree in different periods.Therefore,according to the assessment result,Zhenglanqi should enhance the control of desertification,and Guyuan county and Taibus should prevent regional desertification. |
| Keywords: | regional desertification degree assessment model landscape ecology |
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