| Cite this article: | 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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| 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 |
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