典型草原区河谷带地下水位对水均衡要素变化的响应

发布时间：2018-07-10 12:58

本文选题：典型草原区 + 地下水位　；参考：《节水灌溉》2016年12期

【摘要】：近几年锡林河流域开始进入降水偏丰周期,但地下水“入不敷出”的情况愈加明显,过量的地下水开采需求只能通过消耗地下水储蓄量来实现。基于水均衡原理和统计学方法分析锡林河平原区地下水位对降水量和开采量间的响应程度。研究结果表明,各个观测井对降水时序变化的响应差异较大,其中饲草料基地井与农场三队井地下水位变幅对降水较为敏感;水位埋深与开采量之间存在明显的正相关关系,从水位-开采量关系曲线变化趋势来看,随着地下水开采量增加,农场三队、饲草料基地和奶牛场的水位响应最明显;农作物大棚种植区地下水位主要受降水量与开采量共同作用,响应程度为51.16%,而饲草料基地受开采量影响最大,达到60.71%,压减灌溉饲草料地规模、调整集中连片布局为分散式利用是缓解农灌区地下水超采、促进农牧业安全发展的主要途径。
[Abstract]:In recent years, the Xilin River basin has begun to enter the period of excessive precipitation, but the situation of groundwater "beyond its income" is becoming more and more obvious. The excessive demand for groundwater exploitation can only be realized by consuming the amount of groundwater savings. Based on the principle of water balance and statistical method, the response of groundwater level to precipitation and exploitation in Xilin River Plain is analyzed. The results show that the response of each observation well to precipitation time series is quite different. Among them, the variation amplitude of groundwater level of forage base well and farm Sandun well is more sensitive to precipitation, and there is an obvious positive correlation between water level buried depth and extraction amount. According to the change trend of the relation curve between water level and extraction quantity, with the increase of groundwater exploitation, the water level response of the third farm, forage base and dairy farm is the most obvious. The groundwater level in crop greenhouse planting area is mainly affected by precipitation and extraction, and the response degree is 51.16, while the forage base is most affected by exploitation, reaching 60.71, reducing the scale of irrigated forage land. It is the main way to alleviate the overexploitation of groundwater and promote the safe development of agriculture and animal husbandry to adjust the distribution of centralized continuous slice for decentralized utilization.
【作者单位】：水利部牧区水利科学研究所;中国水利水电科学研究院水资源所;
【分类号】：TV211

【相似文献】