| 华北地下水古环境意义及古气候变化对地下水形成的影响 |
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| 关键词:ground water isotope paleoclimate record paleorecharge |
| 基金项目:地矿部重点基础项目 |
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| 摘要: |
| Paleoclimate Record Deduced from Groundwater and Climate Change Implications of Groundwater Resources in North China |
| The isotopic and elemental compositions of groundwater are influenced by climate conditions at the time of recharge and therefore serve as indicators of climate change. The δ 18 O content of groundwater in North China Plain has recorded the regional climate changes during the last 35kaB.P., especially the has climate shift at the Pleistocene—Holocene transition.It indicates the cold — warm climatic change during the Pleistocene, and also shows the summer monsoon changes during the Holocene. According to the statistical distribution of groundwater 14 C dating , the paleorecharges are identified and the significant recharges for groundwater are about 6kaB.P. and 4kaB.P.. The chloride concentration of soil-water suggests that the dry climate about 3kaB.P. may be probably responsible for groundwater salinity. |
| CHEN Zong-yu,ZHANG Guang-hui,XU Jia-ming.1998.Paleoclimate Record Deduced from Groundwater and Climate Change Implications of Groundwater Resources in North China[J].Acta Geoscientica Sinica,19(4):338-345. |
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