| 引用本文: | 樊丽琴,吴霞,李磊.平罗县不同地下水位分布区地下水埋深变化特征分析[J].灌溉排水学报,0,():-. |
| FAN Li-qin,Wu Xia,Li Lei.平罗县不同地下水位分布区地下水埋深变化特征分析[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】明确平罗县不同水位分布区的地下水埋深变化特征，可更好地指导合理用水和防治土壤盐渍化。【方法】本文根据平罗县不同地下水位分布区内9个观测点的2007—2017年地下水埋深观测资料，分析了其变化特征及其影响因素。【结果】平罗县地下水埋深年内变化幅度大于年际间，随月份呈“W”型变化，随年份呈平缓波浪形变化，5—8月和11月至次年1月各观测点地下水埋深变化曲线呈聚集状态，其他月份则呈离散状态；不同地下水位分布区地下水埋深年际间变异系数表现为：高地下水位>中地下水位>低地下水位，年内则无明显规律，与中低水位分布区相比，高水位分布区地下水埋深更不稳定；从各观测点年均地下水埋深与降雨量、平均气温、水稻种植面积、引黄水量和地下水取水量相关性来看，平罗县高、中水位分布区地下水埋深变化更多地受引黄水量影响，水稻种植面积的增加对降低高水位分布区地下水埋深起到了积极作用。【结论】建议平罗县高、中水位盐碱地的改良应从减少引黄水量入手。 |
| 关键词: 平罗县；不同水位分布区地下水埋深；变化特征；影响因素；引黄水量 |
| DOI： |
| 分类号:TV93; S27 |
| 基金项目:国家自然科学基金项目（31960274），宁夏一二三产业融合发展科技创新示范课题（YES-16-0907），宁夏农林科学院“十三五”重点科技项目(NKYZ-16-0905)，宁夏自然科学基金项目（2019A0346）。 |
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| Characteristics Analyse of Groundwater Depth in the Areas with Different Groundwater Level of Pingluo County |
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FAN Li-qin, Wu Xia, Li Lei
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Institute of Agricultural Resources and Environment,Ningxia Academy of Agriculture and Forestry Sciences
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| Abstract: |
| 【Background】In arid and semi-arid areas, soil salinity is closely related to groundwater depth.【Objective】Characteristics of groundwater depth in the Areas with Different Groundwater Level of Pingluo County is discussed in order to give better guidance to us in rational irrigation water use and controlling soil salinization.【Method】Based on the dynamic observing data of groundwater depth from 9 observation points in the areas with different groundwater level of Pingluo County during 2007—2017, their variation characteristics and influencing factors were analysized.【Result】The variations of groundwater depth in Pingluo County between years were greater than those of the interannual, which changed with months as type "W", changed with vintage as a flat wave type. In May-August and November to January of the following year, groundwater depth curves of 9 observation points showed state of aggregation, which showed a discrete state in other months. The inter-annual variation coefficients of groundwater depth in the areas with different groundwater level were showed as follows: high groundwater level > middle groundwater level > low groundwater level, but there was no obvious rule in the year. Compared with the groundwater depth in the areas with middle and low groundwater level, the groundwater depth in the areas with high groundwater level was more unstable. According to the correlation between average annual groundwater depth at each observation well and the rainfall amount, average temperature, crop sown area, Water diversion from Yellow River and groundwater withdrawal amount, the groundwater depth changes in the Areas with high and middle groundwater Level of Pingluo County were more affected by Huinong Canal diversion amount from Yellow River. The increase of crop planting area and rice planting area had positive impact on the decrease of groundwater depth.【Conclusion】It is suggested that we should start from reducing the irrigation amount from Yellow River to improve saline-alkali land with high groundwater level of Pingluo County. |
| Key words: Pingluo County; Groundwater depth in the areas with different groundwater level; Variation characteristics; Influencing factors；Water diversion from Yellow River |
