A New Parameter-Free Slope Unit Division Method That Integrates Terrain Factors
文献类型：期刊论文
| 作者 | Li, Ping1; Fan, Junfu1,2; Du, Yujie1; Li, Kuan1; Zhou, Yuke2 |
| 刊名 | APPLIED SCIENCES-BASEL
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 14期号:23页码:11279 |
| 关键词 | digital elevation model slope unit hydrological method region growing landslide |
| DOI | 10.3390/app142311279 |
| 产权排序 | 2 |
| 文献子类 | Article |
| 英文摘要 | With increasing research on geological hazards and the development of geographic information technology, slope units play an increasingly important role in landslide susceptibility assessment and prevention work. The scientific and reasonable division of slope units directly impacts the accuracy and practicality of analysis results. Despite the significant progress in slope unit division techniques, most existing methods still have certain limitations, such as a strong dependence on manually set thresholds during the division process, resulting in low levels of automation and efficiency. To address this issue, a new parameter-free slope unit extraction algorithm that integrates terrain factors, called Terrain Factor Parameter-Free Slope Unit Division (TFPF-SU), is introduced. This eliminates the issue of manually setting parameter thresholds during the slope unit division process. This algorithm fully utilizes the terrain information provided by digital elevation models (DEMs) to accurately calculate the curvature, slope, and aspect data for each point. On the basis of the inherent consistency principles among slope, aspect, and curvature, object-oriented image segmentation technology is used to achieve slope unit division. We select Dongchuan District in Yunnan Province, China, as a test area to verify the TFPF-SU algorithm and conduct a detailed comparative analysis and validation of the results with those obtained via traditional hydrological analysis methods from both qualitative and quantitative perspectives. In the quantitative analysis, we utilize the size and shape of the slope units. The results indicate the following: (1) the slope units obtained with the TFPF-SU method are more uniform in size, avoiding issues with oversized or irregularly shaped units; (2) the slope unit shapes obtained with the TFPF-SU method are more reasonable, with about 70% of the units falling within a reasonable shape index range, compared to only about 32% with the hydrological method; and (3) the slope units produced by the TFPF-SU method align more closely with terrain authenticity, exhibiting a higher degree of topographical conformity. |
| WOS研究方向 | Chemistry ; Engineering ; Materials Science ; Physics |
| WOS记录号 | WOS:001376287700001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/210443]  |
| 专题 | 资源与环境信息系统国家重点实验室_外文论文 |
| 通讯作者 | Fan, Junfu |
| 作者单位 | 1.Shandong Univ Technol, Sch Civil Engn & Geomat, Zibo 255000, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, State Key Lab Resources & Environm Informat Syst, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Ping,Fan, Junfu,Du, Yujie,et al. A New Parameter-Free Slope Unit Division Method That Integrates Terrain Factors[J]. APPLIED SCIENCES-BASEL,2024,14(23):11279. |
| APA | Li, Ping,Fan, Junfu,Du, Yujie,Li, Kuan,&Zhou, Yuke.(2024).A New Parameter-Free Slope Unit Division Method That Integrates Terrain Factors.APPLIED SCIENCES-BASEL,14(23),11279. |
| MLA | Li, Ping,et al."A New Parameter-Free Slope Unit Division Method That Integrates Terrain Factors".APPLIED SCIENCES-BASEL 14.23(2024):11279. |
入库方式： OAI收割
来源：地理科学与资源研究所
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