Reghunath Rajesh, Murthy T R Sreedhara, Raghavan B R
Department of Marine Geology, Mangalore University, Mangalagangotri, India.
Environ Monit Assess. 2005 Oct;109(1-3):65-72. doi: 10.1007/s10661-005-5838-4.
An understanding of the behavior of the groundwater body and its long-term trends are essential for making any management decision in a given watershed. Geostatistical methods can effectively be used to derive the long-term trends of the groundwater body. Here an attempt has been made to find out the long-term trends of the water table fluctuations of a river basin through a time series approach. The method was found to be useful for demarcating the zones of discharge and of recharge of an aquifer. The recharge of the aquifer is attributed to the return flow from applied irrigation. In the study area, farmers mainly depend on borewells for water and water is pumped from the deep aquifer indiscriminately. The recharge of the shallow aquifer implies excessive pumping of the deep aquifer. Necessary steps have to be taken immediately at appropriate levels to control the irrational pumping of deep aquifer groundwater, which is needed as a future water source. The study emphasizes the use of geostatistics for the better management of water resources and sustainable development of the area.
了解地下水体的行为及其长期趋势对于在特定流域做出任何管理决策至关重要。地统计方法可有效地用于推导地下水体的长期趋势。在此，已尝试通过时间序列方法找出某流域地下水位波动的长期趋势。该方法被发现对于划定含水层的排泄区和补给区很有用。含水层的补给归因于灌溉用水的回流水。在研究区域，农民主要依靠钻孔取水，且不加区分地从深层含水层抽水。浅层含水层的补给意味着深层含水层被过度抽水。必须立即在适当层面采取必要措施，以控制对深层含水层地下水的不合理抽取，因为深层含水层地下水是未来所需的水源。该研究强调利用地统计方法实现更好的水资源管理和该地区的可持续发展。
