| 引用本文: | 孙继能,王万洲,燕鑫,等.黄土区长武塬地下水埋深动态特征及影响因素分析[J].灌溉排水学报,2022,(10):-. |
| SUN Jineng,WANG Wanzhou,YAN Xin,et al.黄土区长武塬地下水埋深动态特征及影响因素分析[J].灌溉排水学报,2022,(10):-. |
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| 摘要: |
| 【目的】明确地下水补给机制和指导地下水资源合理开发。【方法】基于1976－2017年长武塬5眼监测井地下水埋深数据，分析了地下水埋深动态变化，并利用互相关和多元线性回归等方法识别地下水埋深的影响因素。【结果】长武塬地下水埋深介于25~95 m，各井因水文地质和人为干扰程度等差异表现出不同的波动特征。地下水埋深总体呈波动下降趋势，降幅介于0.08~0.21 m/a。气象因子、植被和人为因素在年内或年际尺度对地下水埋深都有一定影响，但主导性不同。年际尺度，人为因素主导地下水埋深变化，贡献率达74%。年内尺度，植被是影响地下水埋深的主要因素，贡献率为40%。【结论】人口、GDP和苹果园面积的增加对地下水埋深影响较大，需要考虑人类活动与水资源间的可持续性。 |
| 关键词: 长武塬区;地下水埋深;影响因素;贡献率 |
| DOI： |
| 分类号:TV21 |
| 基金项目:国家自然科学基金项目（面上项目，重点项目，重大项目）(42071043） |
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| Analysis on Dynamic Characteristics and Influencing Factors of Groundwater Depth in the Changwu Loess Tableland |
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SUN Jineng, WANG Wanzhou, YAN Xin, LI Bingbing, LI Zhi
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College of Natural Resources and Environment,Northwest A F University,Yangling
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| Abstract: |
| 【Objective】Groundwater is the significant water source on the loess tableland, and analysis of groundwater depth dynamics and influencing factors is helpful to clarify groundwater recharge mechanism and guide the rational development of groundwater resources. 【Method】Based on the groundwater depth data of five monitored wells in Changwu loess tableland from 1976 to 2017, the groundwater depth dynamic changes were analyzed, and the influencing factors of groundwater depth were identified by cross-correlation and multiple linear regression. 【Result】The groundwater depth in Changwu Plateau was between 25 and 95 m, and showed different fluctuation characteristics in each well due to hydrogeological and human disturbance and generally presented a downward trend, with a decrease of 0.08-0.21 m/a. Meteorological factors, vegetation, and human factors all had certain effects on the buried depth at the monthly or interannual scale, but the dominant factors were different. At the interannual scale, human factors dominated the change of groundwater depth, its contribution to change of groundwater depth was 74%. On the monthly scale, vegetation was the main factor affecting burial depth, and it had a contribution to change of groundwater depth of 40%. 【Conclusion】The increase of population, GDP, and apple orchard area has a great impact on groundwater depth, and it is necessary to consider the sustainability between human activities and water resources. |
| Key words: Changwu loess tableland; groundwater depth; influencing factors; contribution |
