| 应用环境示踪剂探讨巴丹吉林沙漠及古日乃绿洲地下水补给 |
| |
| 引用本文： | 黄天明,庞忠和.应用环境示踪剂探讨巴丹吉林沙漠及古日乃绿洲地下水补给[J].现代地质,2007,21(4):624-631. |
| |
| 作者姓名： | 黄天明 庞忠和 |
| |
| 作者单位： | 1. 中国科学院,地质与地球物理研究所,北京,100029;兰州大学,资源环境学院,甘肃,兰州,730000
2. 中国科学院,地质与地球物理研究所,北京,100029 |
| |
| 基金项目： | 中国科学院知识创新工程项目;国家自然科学基金 |
| |
| 摘 要： | 巴丹吉林沙漠位于我国西北部的阿拉善高原。近年来,许多中外学者应用天然水样及土壤水分的水化学、同位素等技术手段研究了该地区地下水补给及环境演化。基于这些研究,试图给出巴丹吉林沙漠和古日乃绿洲一个完整的二维地下水系统概念模型。巴丹吉林沙漠地下水在浅埋区和出露区蒸发,同时接受少量当地降水补给,其最终的排泄区是古日乃绿洲。巴丹吉林沙漠地下水垂向补给微弱,地下水很可能是更新世晚期至全新世早期周边的雅布赖山区降水径流及发源于祁连山的河流古河道补给的古水。在全新世中—晚期,地下水得到有限的降水补给,并且经受蒸发作用。随着千年尺度的气候转型,两千年以来,巴丹吉林沙漠干旱化加剧,正在经历地下水位下降、湖泊绿洲逐渐萎缩消亡的过程。
|
| 关 键 词： | 环境示踪剂 氯质量平衡 地下水补给 巴丹吉林沙漠 古日乃绿洲 |
| 文章编号： | 1000-8527（2007）04-0624-08 |
| 收稿时间： | 2007-07-16 |
| 修稿时间： | 2007-09-17 |
Groundwater Recharge in Badain Jaran Desert and Gurinai Oasis Based on Environmental Tracers |
| |
| HUANG Tian-ming,PANG Zhong-he.Groundwater Recharge in Badain Jaran Desert and Gurinai Oasis Based on Environmental Tracers[J].Geoscience——Journal of Graduate School,China University of Geosciences,2007,21(4):624-631. |
| |
| Authors: | HUANG Tian-ming PANG Zhong-he |
| |
| Institution: | 1. Institute of Geology arid Geophysics, Chinese Academy of Sciences, Beijing 100029, China; 2. College of Resources and Environment, Lanzhou University, Lanzhou , Gansu 730000, China |
| |
| Abstract: | In recent years,Badain Jaran Desert,Northwest of China,has been a focus of international studies.Water chemistry and isotopes of groundwater and surface water samples,and those of soil moisture profiles in particular,have been studied.Based on these results,we have attempted to formulate an integrated 2D hydrogeological conceptual model for the groundwater system linking Badain Jaran Desert and Gurinai Oasis.The dominant recharge to groundwater underneath the sand dunes is from neighboring Yabulai mountains,the groundwater flows towards northwest to Gurinai.Groundwater emerges into lakes on its flowpath,where it is evaporated.The final discharge destination of the groundwater is the Gurinai Oasis where it feeds a wetland ecosystem.Vertical recharge from local precipitation through the desert sand is calculated to be minor.Groundwater in the desert was probably recharged from palaorivers sourced from Qilian Mts.and local palaeorainfall in the period between Pleistocene to Early Holocene.In Mid and Late Holocene,the groundwater undergone evaporation and limited recharge.In the last two thousand years aridity has increased,the groundwater table in the desert has declined as a slow process. |
| |
| Keywords: | environmental tracer chloride mass balance(CMB) groundwater recharge Badain Jaran Desert Gurinai Oasis |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
