Normalized difference snow index simulation for snow-cover mapping in forest by geosail model
文献类型：期刊论文
| 作者 | Cao Yun-gang1,2; Liu Chuang1 |
| 刊名 | Chinese geographical science
 |
| 出版日期 | 2006-06-01 |
| 卷号 | 16期号:2页码:171-175 |
| 关键词 | Snow cover mapping Reflectance model Modis |
| ISSN号 | 1002-0063 |
| 通讯作者 | Cao yun-gang(yungang78@163.com) |
| 英文摘要 | The snow-cover mapping in forest area is always one of the difficult points for optical satellite remote sensing. to investigate reflectance variability and to improve the mapping of snow in forest area, geosail model was used to simulate the reflectance of a snow-covered forest. using this model, the effects of varying canopy density, solar illumination and view geometry on the performance of the modis (moderate-resolution imaging spectroradiometer) snow-cover mapping algorithm were investigated. the relationship between ndsi (normalized difference snow index), ndvi (normalized difference vegetation index) and snow fraction was discussed in detail. results indicated that the weak performance would be achieved if fixed criteria were used for different regions especially in the complicated land cover components. finally, some suggestions to modis snowmap algorithm were put forward to improve snow mapping precision in forest area based on the simulation, for example, new criteria should be used in coniferous forest, that is, ndsi greater than 0.3 and ndvi greater than zero. otherwise, a threshold on view zenith angle may be used in the criteria such as 45 degrees. |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000206581000013 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2379554 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Cao Yun-gang |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao Yun-gang,Liu Chuang. Normalized difference snow index simulation for snow-cover mapping in forest by geosail model[J]. Chinese geographical science,2006,16(2):171-175. |
| APA | Cao Yun-gang,&Liu Chuang.(2006).Normalized difference snow index simulation for snow-cover mapping in forest by geosail model.Chinese geographical science,16(2),171-175. |
| MLA | Cao Yun-gang,et al."Normalized difference snow index simulation for snow-cover mapping in forest by geosail model".Chinese geographical science 16.2(2006):171-175. |
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来源：中国科学院大学
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