| Relationship between groundwater level and irrigated agriculture in Jinghuiqu irrigation area of China |
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| DOI：10.7606/j.issn.1000-7601.2016.01.38 |
| Key Words: Jinghuiqu irrigation area groundwater level agriculture planting structure |
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| Abstract: |
| Based on actual measurements and meteorological data, by the basic theory of correlation analysis, the paper researched relationship between groundwater dynamic regime and the change of agriculture planting structure and the response of groundwater tables to irrigation farming and climate change in more than 50 years. Jinghuiqu Irrigation design irrigated area decreased from about 82 000 hm2 in 1958 to 1982 to about 48 700 hm2 in 1983 to 2000, while the proportion of food crops gradually increased from 70 percent to 95 percent, in the past 20 years,vegetable cultivated area are increasing, and has reached about 25% of the crop area currently; prior to 1983, groundwater level changed little with increased, after 1983 vegetable cultivated area had a drastic increase and a 3.5 m decrease in groundwater level for every 10 000 hm2 increase in the crop cultivated area. At the same time water-table declines also affected by evaporation intensity, industrial water and other factors. |
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