冀中山前平原农业区浅层地下水位对连年少雨响应特征与机制

冀中山前平原农业区浅层地下水是当地农田灌溉的主要水源,已处于超采状态。依据冀中山前平原不同农业区长观孔浅层地下水位动态监测资料,对浅层地下水位响应连年降水偏枯的变化规律进行了研究。结果表明：降水连年偏枯（少雨）时段的春灌期大规模集中开采浅层地下水,是冀中山前平原农业区浅层地下水位不断下降的主要动因;春灌期农业区浅层地下水位降幅与前一年和当年1月到6月降水量密切相关;当年降水量小于当地多年平均降水量（528.4mm）时,随着降水量减小,农业用水开采对浅层地下水位下降的影响增大;当年降水量大于当地多年平均降水量尤其大于620mm时,农业用水开采对浅层地下水位下降的影响显著减弱;合理调控农业区浅层地...

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Published in地球科学与环境学报 Vol. 37; no. 3; pp. 68 - 74
Main Author 张光辉 王茜 田言亮 严明疆 王威
Format Journal Article
LanguageChinese
Published 中国地质科学院水文地质环境地质研究所,河北 石家庄,050061 2015
Subjects
农业区
地下水位
山前平原
干旱
春灌期
浅层地下水
灌溉
超采
地下水位
农业区
arid
shallow groundwater
piedmont plain
groundwater level
山前平原
agricultural area
spring irrigation period
浅层地下水
灌溉
超采
irrigation
干旱
春灌期
over-exploitation
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ISSN1672-6561

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Summary:冀中山前平原农业区浅层地下水是当地农田灌溉的主要水源,已处于超采状态。依据冀中山前平原不同农业区长观孔浅层地下水位动态监测资料,对浅层地下水位响应连年降水偏枯的变化规律进行了研究。结果表明：降水连年偏枯（少雨）时段的春灌期大规模集中开采浅层地下水,是冀中山前平原农业区浅层地下水位不断下降的主要动因;春灌期农业区浅层地下水位降幅与前一年和当年1月到6月降水量密切相关;当年降水量小于当地多年平均降水量（528.4mm）时,随着降水量减小,农业用水开采对浅层地下水位下降的影响增大;当年降水量大于当地多年平均降水量尤其大于620mm时,农业用水开采对浅层地下水位下降的影响显著减弱;合理调控农业区浅层地下水开采强度是缓解冀中山前平原农业区浅层地下水超采情势的重要举措。
Bibliography:shallow groundwater;irrigation;over-exploitation;groundwater level;arid;spring irrigation period;piedmont plain;agricultural area
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 ye
ISSN:1672-6561