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| 华北平原缺水盐渍区浅层地下水位动态分析 | |
| 引用本文： | 毛任钊,刘小京,娄华君.华北平原缺水盐渍区浅层地下水位动态分析[J].地理科学进展,2002,21(6):561-572. |
| 作者姓名： | 毛任钊 刘小京 娄华君 |
| 作者单位： | 1. 中国科学院农业资源研究中心,石家庄,050021 2. 中国科学院地理科学与资源研究所,北京,100101 |
| 基金项目： | 中国科学院知识创新工程资助项目(KZCX-SW-317-01、KZCX2-405) |
| 摘 要： | 本文以国家农业科技攻关南皮试区为例,分析了华北缺水盐渍区地下水水位动态及其与降水量的关系,应用灰色系统理论的GM(1,1)预测方法,建立了地下水位动态的模拟、预测模型。结果表明,在目前供水、用水和水文地质条件下,未来地下水水位呈缓慢下降趋势,年均下降速度为0.12～0.14m/年。单靠平水年甚或丰水年降水难以维持地下水采补平衡,必须进行多年径流调节或跨流域调水,以丰补歉,互济余缺,并实施农田综合节水技术,防止区域水环境的恶化。 |
| 关 键 词： | 缺水盐渍区 地下水动态 模拟 华北平原 |
| 文章编号： | 1007-6301(2002)06-0564-09 |
| 收稿时间： | 2002-07-01 |
| 修稿时间： | 7/1/2002 12:00:00 AM |
A Study on the Dynamic Variation of Shallow Groundwater Table in the Saline and Water Deficit Region in North China Plain |
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| Institution: | 1. Research Center for Agicultural Resources, Shijiazhuang050021, China; 2. Institute of Geographical Sciences and Natural Resources Research, CAS, Beijing100101, China |
| Abstract: | The property of precipitation and dynamics variation of shallow groundwater level in the saline and water deficit region, North China Plain, were discussed in this paper by taking Nanpi Testing Area as a case study. The annual precipitation concentrates in a few of rainstorm process within the monsoon climate region. The shallow groundwater is recharged mainly by the permeated runoff of rainstorm. So the resuming extent of groundwater level can express the active water resource status. The average annual precipitation from 1965 to 2001 was 5457mm. Simple statistics revealed that there was a linear relationship between the groundwater level and the annual rainfall amount. The correlation coefficient was 06317 and 04249 in the two periods of 1980~1989 and 1995~2001 respectively. The biggest annual fluctuation amount of the groundwater level was 41m, and season resuming amount was among 19~38m. According to the results measured by artificial rainfall, there was no runoff in grassland when it rained continually with 569mm of the total water amount. The runoff coefficient was 013 when it rained continually with 1143mm of the total water amount at 106mm/min of the raining intensity. But the coefficient was 021 for bare farmland at alike raining intensity. The resuming amounts of groundwater level were 141~397m in the Nanpi Testing Area when a heavy rainstorm with 252mm water amount occurred in July 13, 1997. The Grey Dynamic Model results show that the shallow groundwater level will be declining gradually in the future based on the water supplying, water utilization and water geo hydrological condition at present. The decline ratio is about 012~014m/y. It is difficult to keep the water balance only with the recharge of rainfall. Therefore it is emphasized to take the comprehensive water saving measures and to regulate the runoff of many years as well as to introduce water from outside watersheds etc. in order to prevent the water environment deterioration of the area. |
| Keywords: | Saline and water deficit region Dynamic variation of shallow groundwater Simulation North China Plain |
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