A stratified environmental reference system for better understanding of the relationship between remote sensing observations and ground monitoring of karst rocky desertification
文献类型：期刊论文
| 作者 | Xu, Erqi; Zhang, Hongqi |
| 刊名 | LAND DEGRADATION & DEVELOPMENT
 |
| 出版日期 | 2022-04-05 |
| 页码 | 17 |
| 关键词 | degraded baseline elevation gradient karst rocky desertification remote sensing monitoring stratification |
| ISSN号 | 1085-3278 |
| DOI | 10.1002/ldr.4232 |
| 通讯作者 | Xu, Erqi(xueq@igsnrr.ac.cn) ; Zhang, Hongqi(zhanghq@igsnrr.ac.cn) |
| 英文摘要 | Quickly and accurately monitoring karst rocky desertification via remote sensing could assist in its mitigation. Yet this is limited by high environmental heterogeneity that introduces uncertainty into satellite observations' relationships with ground-based karst rocky desertification. Influenced by variations of environmental factors, the relevance of satellite data for karst rocky desertification is questionable, especially at a large geographic scale. Here a novel stratified degradation reference system was built to describe this complex relationship. The method was applied in Guizhou-Guangxi Karst Mountainous Region, a typical karst region in China undergoing severe karst rocky desertification. A stratified procedure of elevation-based initial division and sub-division of lithology and land use was designed using moderate resolution imaging spectroradiometer (MODIS) data. MODIS values of surface vegetation, albedo, and temperature products were standardized by percentiles to reveal their relevance for evaluating each environmental stratification of land degradation. We found a substantial spatial variation of MODIS observations across elevation gradients and different land uses. This was corrected using our proposed reference method, wherein standardized MODIS observations show a nonlinear but clear downward trend with increasing karst rocky desertification intensities. Most areas affected by karst rocky desertification had lower MODIS values. Using the stratified environmental reference approach between MODIS observations and karst rocky desertification can enable the cost-effective screening of high-heterogeneity karst areas, to better support monitoring and identify desertification hotspots. |
| WOS关键词 | ELEVATION GRADIENT ; DRIVING FORCES ; TIME-SERIES ; MODIS ; NDVI ; VEGETATION ; LANDSAT ; ALGORITHM ; GUIZHOU ; TEMPERATURE |
| 资助项目 | Second Tibetan Plateau Scientific Expedition and Research Program[2019QZKK0603] ; National Natural Science Foundation of China[41601095] ; Youth Innovation Promotion Association CAS[2021052] |
| WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
| 语种 | 英语 |
| WOS记录号 | WOS:000780930600001 |
| 出版者 | WILEY |
| 资助机构 | Second Tibetan Plateau Scientific Expedition and Research Program ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/173753]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Xu, Erqi; Zhang, Hongqi |
| 作者单位 | Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xu, Erqi,Zhang, Hongqi. A stratified environmental reference system for better understanding of the relationship between remote sensing observations and ground monitoring of karst rocky desertification[J]. LAND DEGRADATION & DEVELOPMENT,2022:17. |
| APA | Xu, Erqi,&Zhang, Hongqi.(2022).A stratified environmental reference system for better understanding of the relationship between remote sensing observations and ground monitoring of karst rocky desertification.LAND DEGRADATION & DEVELOPMENT,17. |
| MLA | Xu, Erqi,et al."A stratified environmental reference system for better understanding of the relationship between remote sensing observations and ground monitoring of karst rocky desertification".LAND DEGRADATION & DEVELOPMENT (2022):17. |
入库方式： OAI收割
来源：地理科学与资源研究所
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