Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi
A terrain skeleton determines the overall structure and characteristics of the terrain and indicates the presence of significant terrain features, such as ridges and valleys. It plays an important role in terrain representation and reconstruction, hydrological analysis of watersheds, and other scien...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-02-01
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| Series: | ISPRS International Journal of Geo-Information |
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| Online Access: | https://www.mdpi.com/2220-9964/11/2/136 |
| _version_ | 1797479457457438720 |
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| author | Min Li Ting Wu Weitao Li Chun Wang Wen Dai Xu Su Yuanyuan Zhao |
| author_facet | Min Li Ting Wu Weitao Li Chun Wang Wen Dai Xu Su Yuanyuan Zhao |
| author_sort | Min Li |
| collection | DOAJ |
| description | A terrain skeleton determines the overall structure and characteristics of the terrain and indicates the presence of significant terrain features, such as ridges and valleys. It plays an important role in terrain representation and reconstruction, hydrological analysis of watersheds, and other scientific studies and engineering applications. Previous studies of terrain skeleton have been mostly focused on the extraction of terrain skeletons, ignoring their important effect on terrain analysis. Therefore, this work proposes a new terrain skeleton, which includes three types of terrain skeleton points and two types of terrain skeleton lines. The terrain control points are peak, saddle, and valley nodes, while the terrain skeleton lines are connection lines of peaks and saddles and connection lines of saddles and valley nodes. The terrain skeleton connects isolated terrain control points together. The data structure is designed, and three analysis indicators, namely, nearest-neighbor index, topological connectivity index and landscape shape index are selected. Results show that the three selected indicators can reflect the spatial structure of the terrain skeleton and describe the landform development to a certain extent. Different areas of the same landform, such as the two sample areas in Shenmu County, show variations. |
| first_indexed | 2024-03-09T21:46:09Z |
| format | Article |
| id | doaj.art-8e40a4067e104105a54199d9aa42b026 |
| institution | Directory Open Access Journal |
| issn | 2220-9964 |
| language | English |
| last_indexed | 2024-03-09T21:46:09Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | ISPRS International Journal of Geo-Information |
| spelling | doaj.art-8e40a4067e104105a54199d9aa42b0262023-11-23T20:16:26ZengMDPI AGISPRS International Journal of Geo-Information2220-99642022-02-0111213610.3390/ijgi11020136Terrain Skeleton Construction and Analysis in Loess Plateau of Northern ShaanxiMin Li0Ting Wu1Weitao Li2Chun Wang3Wen Dai4Xu Su5Yuanyuan Zhao6School of Geographic Information and Tourism, Chuzhou University, Chuzhou 239099, ChinaPanda Wisdom Water Co., Ltd., Shanghai 201703, ChinaSchool of Geographic Information and Tourism, Chuzhou University, Chuzhou 239099, ChinaSchool of Geographic Information and Tourism, Chuzhou University, Chuzhou 239099, ChinaSchool of Remote Sensing & Geomatics Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, ChinaSchool of Earth Science and Engineering, Hebei University of Engineering, Handan 056009, ChinaSchool of Earth Science and Engineering, Hebei University of Engineering, Handan 056009, ChinaA terrain skeleton determines the overall structure and characteristics of the terrain and indicates the presence of significant terrain features, such as ridges and valleys. It plays an important role in terrain representation and reconstruction, hydrological analysis of watersheds, and other scientific studies and engineering applications. Previous studies of terrain skeleton have been mostly focused on the extraction of terrain skeletons, ignoring their important effect on terrain analysis. Therefore, this work proposes a new terrain skeleton, which includes three types of terrain skeleton points and two types of terrain skeleton lines. The terrain control points are peak, saddle, and valley nodes, while the terrain skeleton lines are connection lines of peaks and saddles and connection lines of saddles and valley nodes. The terrain skeleton connects isolated terrain control points together. The data structure is designed, and three analysis indicators, namely, nearest-neighbor index, topological connectivity index and landscape shape index are selected. Results show that the three selected indicators can reflect the spatial structure of the terrain skeleton and describe the landform development to a certain extent. Different areas of the same landform, such as the two sample areas in Shenmu County, show variations.https://www.mdpi.com/2220-9964/11/2/136terrain skeletondigital elevation modelLoess Plateaunearest-neighbor indextopological connectivity indexlandscape shape index |
| spellingShingle | Min Li Ting Wu Weitao Li Chun Wang Wen Dai Xu Su Yuanyuan Zhao Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi ISPRS International Journal of Geo-Information terrain skeleton digital elevation model Loess Plateau nearest-neighbor index topological connectivity index landscape shape index |
| title | Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi |
| title_full | Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi |
| title_fullStr | Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi |
| title_full_unstemmed | Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi |
| title_short | Terrain Skeleton Construction and Analysis in Loess Plateau of Northern Shaanxi |
| title_sort | terrain skeleton construction and analysis in loess plateau of northern shaanxi |
| topic | terrain skeleton digital elevation model Loess Plateau nearest-neighbor index topological connectivity index landscape shape index |
| url | https://www.mdpi.com/2220-9964/11/2/136 |
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