| 高 蜻.基于ArcGIS宏观地形因子的望谟河流域地质灾害与地貌特征分析[J].林业调查规划,2023,48(2):52-57 |
| 基于ArcGIS宏观地形因子的望谟河流域地质灾害与地貌特征分析 |
| Geological Hazards and Geomorphic Characteristics of Wangmo River Basin Based on ArcGIS Macro Terrain Factors |
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| DOI： |
| 中文关键词: 地质灾害 地貌特征 地形因子 ArcGIS 望谟河流域 |
| 英文关键词: geological hazards geomorphologic feature terrain factors ArcGIS Wangmo River basin |
| 基金项目: |
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| 中文摘要: |
| 以贵州省望谟县望谟河流域为研究区,通过ArcGIS平台成功提取包括海拔高程、地形起伏度、地表切割深度、地表粗糙度在内的4个宏观地形因子，对地质灾害点在各地形因子上的分布状况进行分析。结果表明，在宏观地形因子上，望谟河流域地质灾害主要集中分布于海拔1 245~1 345 m区域；灾害主要集中在地形起伏度70 m以上地区，在≥200~500 m区间较为集中；在地表切割深度为≥75~150 m区域内分布最多，地质灾害规模在地表切割深度150~200 m区域最大；在地面粗糙度≥1~1.02和≥1.2~1.4区间内发生地质灾害可能性较大。 |
| 英文摘要: |
| Taking the Wangmo River basin in Wangmo County, Guizhou Province as the research area, four macro terrain factors, including elevation, terrain undulation, surface cutting depth, and surface roughness, were successfully extracted using the ArcGIS platform. The distribution of geological hazard points on each terrain factor was analyzed. The results showed that geological hazard points in the Wangmo River Basin were mainly distributed at an altitude of ≥1 245-1 345 m, concentrated in areas with terrain undulation of more than 70 m, especially in the range of ≥200-500 m,and also concentrated in the range of surface cutting depth of ≥75-150 m,with the largest scale in surface cutting depth of 150-200 m, and geological hazards were more likely to occur in the range of ground roughness ≥1-1.02 and ≥1.2-1.4. |
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