Distribution of topographical changes triggered by prolonged heavy rainfall in the Chinese Loess Plateau: A case study of the Gutun catchment in Yan'an
文献类型：期刊论文
| 作者 | Cao, Zhi1,2; Han, Zhen3; Li, Yurui1,2; Wang, Jieyong1,2 |
| 刊名 | JOURNAL OF GEOGRAPHICAL SCIENCES
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 34期号:3页码:571-590 |
| 关键词 | topographical changes extreme precipitation prolonged heavy rainfall disaster prevention and mitigation loess hilly region Loess Plateau |
| DOI | 10.1007/s11442-024-2218-y |
| 产权排序 | 1 |
| 文献子类 | Article |
| 英文摘要 | As China's Loess Plateau has lately witnessed increasingly extreme precipitation events, it is important to analyze the impact of extreme precipitation and identify the conditions for the occurrence of geological disasters. Field surveys can provide detailed geological information in this regard but are time consuming and labor intensive. In this paper, we provide a case study on the Gutun catchment of Yan'an, which was affected by prolonged heavy rainfall in July 2013. We used Digital Elevation Model (DEM) data obtained by processing ZY-03 stereo-pair images before and after the rainy season, including the period of prolonged heavy rainfall mentioned above, to analyze the topographical changes triggered by the rainfall. The results showed the following: (1) The rainy season reduced the elevation of the catchment by about 1.7 cm. The major change in its elevation ranged from -0.5 to 0 m, accounting for 38.41% of the overall area of change and dominating above 70 m of slope height. (2) The rainy season increased the average inclination of the slopes in the area from 28.81 degrees to 28.95 degrees, while the range of their peak inclination was mainly distributed in the range of 24 degrees-36 degrees. (3) Sunny and half-sunny slopes exhibited a greater loss in elevation, while shady and half-shady slopes exhibited an increase in elevation. More drastic topographical changes were observed in the shady and half-shady slopes. (4) The morphology of the area that had undergone a reduction in elevation was characterized by concave slopes, while convex slopes abounded in the area with increased elevation. (5) The sunny or shady properties of the slope aspect constituted the key factor influencing the topographical changes, followed by the height, inclination, and shape of the slopes. The work here can provide guidance for measures related to disaster prevention and mitigation. |
| WOS关键词 | LAND CONSOLIDATION ; NORTHERN SHAANXI ; SOIL-EROSION ; LANDSLIDE ; DYNAMICS ; PROVINCE ; SHALLOW ; REGION |
| WOS研究方向 | Physical Geography |
| 语种 | 英语 |
| WOS记录号 | WOS:001187379700001 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/204825]  |
| 专题 | 区域可持续发展分析与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Key Lab Reg Sustainable Dev Modeling, Beijing 100101, Peoples R China 3.Minist Nat Resources China, Key Lab Degraded & Unused Land Consolidat Engn, Beijing 100101, Peoples R China 4.Qingdao Marine Remote Sensing Informat Technol Co, Qingdao 266000, Shandong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Zhi,Han, Zhen,Li, Yurui,et al. Distribution of topographical changes triggered by prolonged heavy rainfall in the Chinese Loess Plateau: A case study of the Gutun catchment in Yan'an[J]. JOURNAL OF GEOGRAPHICAL SCIENCES,2024,34(3):571-590. |
| APA | Cao, Zhi,Han, Zhen,Li, Yurui,&Wang, Jieyong.(2024).Distribution of topographical changes triggered by prolonged heavy rainfall in the Chinese Loess Plateau: A case study of the Gutun catchment in Yan'an.JOURNAL OF GEOGRAPHICAL SCIENCES,34(3),571-590. |
| MLA | Cao, Zhi,et al."Distribution of topographical changes triggered by prolonged heavy rainfall in the Chinese Loess Plateau: A case study of the Gutun catchment in Yan'an".JOURNAL OF GEOGRAPHICAL SCIENCES 34.3(2024):571-590. |
入库方式： OAI收割
来源：地理科学与资源研究所
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