A Method of Watershed Delineation for Flat Terrain Using Sentinel-2A Imagery and DEM: A Case Study of the Taihu Basin
文献类型：期刊论文
| 作者 | Li, Leilei2,3; Yang, Jintao1,2; Wu, Jin1,2 |
| 刊名 | ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION
 |
| 出版日期 | 2019-12-01 |
| 卷号 | 8期号:12页码:18 |
| 关键词 | watershed division Sentinel-2A Google Earth Engine (GEE) Taihu Basin hydrology plains area |
| DOI | 10.3390/ijgi8120528 |
| 通讯作者 | Li, Leilei(lileilei17@mails.ucas.ac.cn) |
| 英文摘要 | Accurate watershed delineation is a precondition for runoff and water quality simulation. Traditional digital elevation model (DEM) may not generate realistic drainage networks due to large depressions and subtle elevation differences in local-scale plains. In this study, we propose a new method for solving the problem of watershed delineation, using the Taihu Basin as a case study. Rivers, lakes, and reservoirs were obtained from Sentinel-2A images with the Canny algorithm on Google Earth Engine (GEE), rather than from DEM, to compose the drainage network. Catchments were delineated by modifying the flow direction of rivers, lakes, reservoirs, and overland flow, instead of using DEM values. A watershed was divided into the following three types: Lake, reservoir, and overland catchment. A total of 2291 river segments, seven lakes, eight reservoirs, and 2306 subwatersheds were retained in this study. Compared with results from HydroSHEDS and Arc Hydro, the proposed method retains crisscross structures in the topology and prevented erroneous streamlines in large lakes. High-resolution Sentinel-2A images available on the GEE have relatively greater merits than DEMs for precisely representing drainage networks and catchments, especially in the plains area. Because of the higher accuracy, this method can be used as a new solution for watershed division in the plains area. |
| WOS关键词 | DRAINAGE NETWORK EXTRACTION ; LAKE TAIHU ; RESOLUTION ; RIVER ; SWAT ; PREDICTION ; MODEL ; LIDAR |
| 资助项目 | National Natural Science Foundation Project of China[41590845] ; State Key Laboratory |
| WOS研究方向 | Physical Geography ; Remote Sensing |
| 语种 | 英语 |
| 出版者 | MDPI |
| WOS记录号 | WOS:000518041800007 |
| 资助机构 | National Natural Science Foundation Project of China ; State Key Laboratory |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/133036]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Li, Leilei |
| 作者单位 | 1.Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China 3.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Leilei,Yang, Jintao,Wu, Jin. A Method of Watershed Delineation for Flat Terrain Using Sentinel-2A Imagery and DEM: A Case Study of the Taihu Basin[J]. ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,2019,8(12):18. |
| APA | Li, Leilei,Yang, Jintao,&Wu, Jin.(2019).A Method of Watershed Delineation for Flat Terrain Using Sentinel-2A Imagery and DEM: A Case Study of the Taihu Basin.ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION,8(12),18. |
| MLA | Li, Leilei,et al."A Method of Watershed Delineation for Flat Terrain Using Sentinel-2A Imagery and DEM: A Case Study of the Taihu Basin".ISPRS INTERNATIONAL JOURNAL OF GEO-INFORMATION 8.12(2019):18. |
入库方式： OAI收割
来源：地理科学与资源研究所
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