遥感和地理空间方法:优化半干旱地区的地下水勘探,尼泊尔
Sandesh Dhakal1, Rajan Subedi1, Saroj Kandel1
1Tribhuvan University, Institute of Forestry, Pokhara Campus, Pokhara, Nepal.
Heliyon
|May 29, 2024
概括
这项研究利用遥感和地理空间分析绘制了 Mustang 谷的地下水潜在区域. 这些发现有助于为面临气候变化影响的脆弱山区社区提供可持续的水资源管理.
科学领域:
- 水文学和地球空间科学
- 环境科学与遥感 环境科学与遥感
背景情况:
- 地下水对半干旱的山区至关重要,对农业生产率至关重要.
- 气候变化正在影响山区的水资源,导致泉水干,地下水流量减少.
- 可持续的水资源管理对于山区社区的未来至关重要.
研究的目的:
- 通过遥感和地理空间技术评估 Mustang 谷的地下水潜在区域.
- 为气候脆弱地区的水文,气象和作物规划提供政策制定者和规划者的支持.
主要方法:
- 采用遥感和地理空间方法来划定地下水潜在区域.
- 使用了九个因素:斜率,排水密度,线层密度,地质,土壤,土地使用/土地覆盖,降雨量,面积和土壤水分.
- 应用了贝叶斯证据模型和接收器操作特征曲线分析的贝叶斯权重,以评估准确性.
主要成果:
- 划定了五个地下水潜在区域:非常高 (0.6%),高 (12.4%),中等 (51.2%),低 (35.5%) 和非常低 (0.3%).
- 在预测地下水存在方面取得了72.26%的准确性,得到了春天位置的验证.
- 确定了中等和低潜力区域作为研究区域内最广泛的区域.
结论:
- 该研究提供了 Mustang 谷的全面地下水潜在地图,对水资源管理至关重要.
- 结果支持对可持续用水,农业规划和山区生态系统气候变化适应的知情决策.
- 综合地理空间方法为评估类似脆弱地形的地下水资源提供了可复制的方法.
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