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Response Characteristic and Mechanism of Shallow Groundwater Level on the Successive Years with Less Rainfall in the Agricultural Areas of the Central Hebei Piedmont Plain(PDF)

《地球科学与环境学报》[ISSN:1672-6561/CN:61-1423/P]

Issue:
2015年第03期
Page:
68-74
Research Field:
水资源与环境
Publishing date:

Info

Title:
Response Characteristic and Mechanism of Shallow Groundwater Level on the Successive Years with Less Rainfall in the Agricultural Areas of the Central Hebei Piedmont Plain
Author(s):
ZHANG Guang-hui WANG Qian TIAN Yan-liang YAN Ming-jiang WANG Wei
Institute of Hydrogeology and Environmental Geology, Chinese Academy of Geological Sciences, Shijiazhuang 050061, Hebei, China
Keywords:
shallow groundwater irrigation over-exploitation groundwater level arid spring irrigation period piedmont plain agricultural area
PACS:
P641.8;S273.4
DOI:
-
Abstract:
Shallow groundwater, which is in over-exploitation, is the main water source of farm irrigation in the agricultural areas of the central Hebei piedmont plain. According to the dynamic monitoring data of shallow groundwater level from long-time observation hole in the different agricultural areas of the central Hebei piedmont plain, variable characteristics of shallow groundwater level response to the successive years with less rainfall were studied. The results show that large-scale and intensive shallow groundwater exploitation during spring irrigation periods of successive years with less rainfall mainly causes the continuous decline of shallow groundwater level in the agricultural areas of the central Hebei piedmont plain; the decline amplitude of shallow groundwater level during spring irrigation period is related closely with the precipitation from January to June of the previous year and the same year; when the annual precipitation is less than the local annual average precipitation (528.4 mm), the effect of agricultural water exploitation on the decline of shallow groundwater increases significantly with the decrease of precipitation; when the annual precipitation is more than the local annual average precipitation, even more than 630 mm, the effect of agricultural water exploitation on the decline of shallow groundwater decreases significantly; adjusting and controlling rationally the exploitation intensity of shallow groundwater in the agricultural areas is important for improving the sustainable utilization of shallow groundwater in the agricultural areas of the central Hebei piedmont plain.

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Last Update: 2015-05-27