| Cite this article: | 张 彦,邹 磊,梁志杰,等.气候变化和人类活动对灌区地下水埋深的影响[J].灌溉排水学报,0,():-. |
| Zhang Yan,Zou Lei,Liang Zhijie,et al.气候变化和人类活动对灌区地下水埋深的影响[J].灌溉排水学报,0,():-. |
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| Effects of Climate Change and Human Activities on Groundwater Depth in the Irrigation District |
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Zhang Yan,Zou Lei,Liang Zhijie,et al
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1.Institute of Farmland Irrigation, Chinese Academy of Agricultural Sciences;2.Key Laboratory of Water Cycle and Related Land Surface Processes, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences;3.Zhejiang Dayu Information Technology Limited Company;4.School of Water Conservancy Engineering, Zhengzhou University
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| Abstract: |
| 【Background】As a stable water source for sustainable and green development in irrigation district, groundwater was greatly affected by climatic conditions and human activities. The increase of groundwater depth would severely restrict the high-quality development of industry and agriculture in irrigation district. Therefore, the research on the response characteristics of climate change and human activities to the change of groundwater depth could provide a certain theoretical basis for the rational development and sustainable development of groundwater in irrigation district. 【Objective】In order to explore the effects of climate change and human activities on groundwater depth in the irrigation district. 【Method】The variation and mutation characteristics of groundwater depth and its influencing factors were analyzed in the People’s victory canal irrigation district form 1952—2013, and the response characteristics between groundwater depth and each influencing factor were identified using the decadal volatility analysis, mutation test analysis, gray correlation analysis, sensitivity analysis, double cumulative curve method and relative contribution rate methods. 【Result】The groundwater depth showed an obvious increasing trend in the People's victory canal irrigation district (0.8m/10a). The maximum coefficient of variation of groundwater depth during 1952—1959 was 27.33%, showing moderate variability; the coefficients of variation of the precipitation, evaporation, average temperature and irrigation water quantity in 1960s were the largest, in which the evaporation and average temperature showed weak variability. The abrupt years of groundwater depth, precipitation, evaporation, average temperature and irrigation water quantity occurred in 1984, 1970s, around 1972, around 1973 and 1993—1996, respectively. The influence degree of each influencing factor on groundwater depth was average temperature > precipitation > irrigation water quantity > evaporation, and the sensitivity degree was average temperature > evaporation > precipitation > irrigation water quantity. In general, the contribution of each influencing factor to groundwater depth was average temperature > evaporation > irrigation water quantity > precipitation, the maximum average temperature was 38.16% and the minimum precipitation was 17.40%; the largest contribution of irrigation water quantity to groundwater depth from 2002 to 2013 was 47.05%. 【Conclusion】The main factors affecting the groundwater depth at different time stages were different, the evaporation was the most affected from 1952 to 1963, the average temperature was the most affected from 1964 to 2001, and the irrigation water quantity was the most affected from 2002 to 2013. |
| Key words: climate change; human activities; groundwater depth; response characteristic; relative contribution rate |
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