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Water in Soil Profile and Sub-Strata and Watershed Development in Central Himalayas for Perennial Community Water Supply

机译:Himalayas中央Himalayas的土壤剖面和分层和流域开发的水,常年社区供水

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Communities living in the Central Himalayas of India have been meeting their requirement of water from sources such as traditional naula - a small seepage collection tank on hill slope, and its improved version - the Infiltration Well, Springs and small order streams (Das, 2000). Hydrologic studies carried out in the region detected a steady decline in spring as well as channel discharges and collection into naulas. Some of these have become seasonal and quite a few have even dried up. This has been concurrent to widespread denudation of natural forest cover and unabated erosion. These studies have concentrated on surface and spring hydrology while treated springs as part of ground water or manifestation of ground water. While the relevance of seepage as a process and water in soil profile and sub strata as an immediate source, have not been dealt with (Valdiya et al, 1993; Kadekodi et al., 1997). An UNDP sponsored feasibility study of the infiltration wells - an improved version of naula revealed the centrality of these two in the context of hydrologic continuum or whole as well as of sustainable water supply to the communities (Fig.1) (Rees, 1996). Examination of research results, field experiences and actual occurrence of springs vs first and second order streams and traditional naulas on the hill slopes established that seepage flows are the ultimate source for all these three and determines the extents of incident rainfall that could be disposed of as surface or immediate runoff and sub surface runoff.
机译:居住在印度中部喜马拉雅山的社区一直在满足传统Naula等来源的水资源的要求 - 山坡上的一个小渗流收集罐,其改进版本 - 渗透井,弹簧和小订单流(DAS,2000) 。该区域进行的水文研究检测到春季的稳定下降以及通道排放和收集到Naulas。其中一些已成为季节性的,并且甚至干涸了很少。这一直以广泛的剥夺天然森林覆盖和未扩张的侵蚀。这些研究集中在表面和弹簧水文上,同时处理弹簧作为地下水的一部分或地面水的表现。虽然渗流作为土壤轮廓和子地层中的过程和水的相关性并未处理(Valdiya等,1993; Kadekodi等,1997)。开发计划署对渗透井的赞助可行性研究 - Naula的改进版本在水文连续之下或全部以及对社区的可持续水供应(REES,1996)的情况下,Naula的一个改进版本揭示了这两个的中心。考察研究结果,场地经验和斯普林斯的实际发生与山坡上的第一和二阶流和传统的Naulas建立了渗流流量是所有这三个的最终来源,并确定了可能被处理的事件降雨量的范围表面或立即径流和子表面径流。

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