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| 基于MODIS遥感数据的呼伦贝尔土地荒漠化信息提取 | |
| 引用本文： | 孟翔冲,姜琦刚,齐霞,王斌,吴阳春,李根军,杨佳佳.基于MODIS遥感数据的呼伦贝尔土地荒漠化信息提取[J].安徽农业科学,2012(5):2977-2979. |
| 作者姓名： | 孟翔冲 姜琦刚 齐霞 王斌 吴阳春 李根军 杨佳佳 |
| 作者单位： | 1. 吉林大学地球探测科学与技术学院,吉林长春,130026 2. 沈阳地球物理勘察院,辽宁沈阳,110121 3. 吉林大学综合信息矿产预测研究所,吉林长春,130026 4. 吉林大学地球科学学院,吉林长春,130026 |
| 基金项目： | 中国地质调查局专项资助项目 |
| 摘 要： | 目的]基于MODIS遥感数据,对呼伦贝尔地区土地荒漠化信息进行提取。方法]基于空间分辨率为1 km的MODIS遥感数据,选取可以反映不同荒漠化特征的5个指标进行反演,并采用决策树分类方法对呼伦贝尔地区土地荒漠化信息进行提取。结果]呼伦贝尔地区土地荒漠化面积为33 862 km2,占全区总面积的20.36%,且主要以沙质荒漠化为主;通过野外验证及高分辨率解译数据采点验证,此评价方法总体精度达89%以上。结论]使用文中评价方法进行荒漠化监测,不仅能够对大尺度的荒漠化地区进行监测,而且具有较好的评价效果。 |
| 关 键 词： | 荒漠化 MODIS数据 遥感 决策树 反演 |
Extraction of Desertification Information in Hulun Buir Based on MODIS Image Data |
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| Institution: | MENG Xiang-chong et al(College of Geo-Exploration Science and Technology,Jilin University,Changchun,Jilin 130026) |
| Abstract: | Objective] To extract desertification information of Hulun Buir region based on MODIS image data.Method] Based on MODIS image data with the spatial resolution of 1 km,5 indicators which could reflect different desertification features were selected to conduct inversion.The desertification information of Hulun Buir region was extracted by decision tree classification.Result] The desertification area of Hulun Buir region is 33 862 km2,accounting for 24% of the total area,and it is mainly dominated by sandiness desertification.Though field verification and mining point validation of high-resolution interpretation data,the overall accuracy of this evaluation is above 89%.Conclusion] Evaluation method of this paper is not only effectively for large scale regional desertification monitoring but also has a better evaluation performance. |
| Keywords: | Desertification MODIS image data Remote sensing Decision tree Inversion |
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