使用GIS和分析层次过程 (AHP) 开发印度特里普拉邦的山体滑坡易感性地图
Nirmalya Kumar Nath1, Vinay Kumar Gautam1, Chaitanya B Pande2,3
1Department of Soil & Water Engineering, CTAE, MPUAT, Udaipur, Rajasthan, 313001, India.
Environmental science and pollution research international
|December 30, 2023
概括
特里普拉邦的山体滑坡易感性被绘制出地空间技术和分析层次过程 (AHP) 的地图. 大多数地区的风险低至中等,这对于规划减灾战略至关重要.
科学领域:
- 地质危险 地质危险
- 地理空间分析是什么
- 风险评估 风险评估
背景情况:
- 滑坡对全球构成重大威胁,造成广泛的破坏和经济损失.
- 印度东北部的特里普拉邦在季风季节经常发生山体滑坡.
- 准确的山体滑坡易感性测绘对于有效的规划和缓解至关重要.
研究的目的:
- 用综合地理空间技术和分析层次过程 (AHP) 来评估特里普拉邦的山体滑坡易感性.
- 创建季节性山体滑坡易感性地图,用于明智的灾害管理和基础设施开发.
主要方法:
- 选择了八个影响因素:斜率,石质,排水密度,降雨量,土地使用/土地覆盖,距离河流/道路的距离和土壤类型.
- 采用分析层次流程 (AHP) 与地理空间技术集成用于易感映射.
- 计算了山体滑坡易感指数 (LSI) 并将区域分为五类:非常高,高,中等,低和非常低.
主要成果:
- 滑坡易感指数 (LSI) 在6.205 (季风) 和1.427 (季风后) 之间变化.
- 特里普拉的大部分地区在各个季节都属于非常低到中度的山体滑坡易感区域.
- 季风前:低易感性为73.2%;季风前:中度易感性为62%;季风后:低易感性为68.5%.
结论:
- 该研究为工程师和规划人员提供了管理山体滑坡风险的基本数据.
- 调查结果支持在特里普拉邦开发有弹性的基础设施和有效的防滑措施.
- 季节性易感性地图有助于有针对性的减缓工作和为灾难准备分配资源.
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