| 高 蜻.基于ArcGIS 的望谟河流域地质灾害与微观地形因子分析[J].林业调查规划,2024,49(6):171-174 |
| 基于ArcGIS 的望谟河流域地质灾害与微观地形因子分析 |
| Analysis of Geological Disasters and Micro Terrain Factors inWangmo River Basin Based on ArcGIS |
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| DOI： |
| 中文关键词: 微观地形因子 地形地貌 地质灾害 ArcGIS 望谟河流域 |
| 英文关键词: micro terrain factor terrain and landforms geological disaster ArcGIS Wangmo River Basin |
| 基金项目:贵州省科学技术基金(黔科合J 字〔2010〕2240);贵州大学引进人才科研项目(贵大人基合字〔2009〕006);中国气象局第三次青
藏高原大气科学试验项目;贵州省喀斯特生态与环境专业学位研究生工作站项目. |
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| 中文摘要: |
| 地质灾害由多种因素综合作用形成,坡度、坡向、平面曲率、剖面曲率等微观地形因子对于地质灾害的分布特征有着重要的影响。以ArcGIS为工作平台,提取望谟河流域DEM 中微观地形因子信息,对流域内地质灾害发生点与各微观地形因子关系进行分析。结果表明,地质灾害主要集中发生在坡度为15°~45°区域,在坡度较小或较大地区有少量灾害发生;地质灾害在阴坡的发生规模大于阳坡;在平面曲率和剖面曲率均为0°~1°区间地质灾害发生规模大,数量多。基于ArcGIS的灾害预测将在灾害防治中发挥重要作用。 |
| 英文摘要: |
| Geological disasters are formed by the combined effects of multiple factors, and micro terrain
factors such as slope, slope direction, plane curvature and profile curvature have important impacts on
the distribution characteristics of geological disasters. Based on ArcGIS, this paper extracted the information
of micro terrain factors from the DEM, and analyzed the relationship between geological disaster
points and various micro terrain factors in Wangmo River Basin. The results showed that the geological
disasters mainly occurred in areas with slopes ranging from 15° to 45°, occurred less frequently in areas
with small or large slopes; the occurrence scale of geological disasters on shady slopes was greater than
on sunny slopes; the geological disasters occurred on a large scale and in large quantities within the
range of 0° to 1° in both plane curvature and section curvature. ArcGIS based disaster prediction would
play an important role in disaster prevention and control. |
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