Pumping decisions for sustainable development of groundwater resources in areas of grassland degradation: a case study in Lanqi Banner, Inner Mongolia, China |
| |
| Authors: | Bagen Chaolun Bin He Ruizhong Gao Liang Wang |
| |
| Institution: | (1) Faculty of Hydraulic and Civil Engineering, The Inner Mongolia Agriculture University, Hohhot, 010018, China;(2) Institute of Industrial Science, The University of Tokyo, Be505, 461 Komaba, Meguroku, Tokyo 153-8505, Japan |
| |
| Abstract: | The best planting alternatives for satisfying high water use demands of forage and fodder crops in a region of Inner Mongolia, China, were determined by a multiobjective distributed-parameter groundwater management model. These alternatives took account of different cropping patterns and pumping decisions associated with both temporal and spatial aspects of water allocation. The model was developed for phreatic, homogenous, and isotropic aquifers using the response matrix technique of quadratic programming theory and, in this case, using the alternative direction implicit (ADI) scheme. Model solutions using effective rainfall with a probability of 50%, show that average water table drawdown in the planning period (2006–2017) is 0.22 m and the groundwater fluctuation in each pumping well is very low. In order to evaluate the pumping decisions under an effective rainfall with a probability of 75%, a sensitive analysis was also conducted. Analysis shows that it is useful to apply the results from the proposed model to control the landscape degradation due to overgrazing and overpumping activities. |
| |
| Keywords: | Arid regions Groundwater management Numerical modeling Landscape degradation China |
| 本文献已被 SpringerLink 等数据库收录！ |
|
