| 黑河干流拟建水利工程对下游生态环境的影响分析 |
| |
| 引用本文： | 姚兴荣,丁宏伟,沈永平,蓝永超,赵玉苹,曹晓辉,尹政.黑河干流拟建水利工程对下游生态环境的影响分析[J].冰川冻土,2012,34(4):934-941. |
| |
| 作者姓名： | 姚兴荣 丁宏伟 沈永平 蓝永超 赵玉苹 曹晓辉 尹政 |
| |
| 作者单位： | 甘肃省地矿局水文地质工程地质勘察院,甘肃张掖,734000;甘肃省地矿局水文地质工程地质勘察院,甘肃张掖734000 中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 甘肃省黑河生态水文与流域科学重点实验室,甘肃兰州730000;中国科学院寒区旱区环境与工程研究所,甘肃兰州730000 甘肃省黑河生态水文与流域科学重点实验室,甘肃兰州730000 |
| |
| 基金项目： | 中国科学院内陆河流域生态水文院重点实验室开放基金，国家自然科学基金重点项目，甘肃省地矿局水工环科学基金项目 |
| |
| 摘 要： | 依据典型年份实际调查资料和以往研究成果,采用地下水均衡方法,定量对比分析了黑河拟建水利工程对下游地区地下水资源变化趋势,并利用Visual Modflow三维地下水非稳定流软件系统模型对下游盆地未来20a(2008—2028年)地下水位及其生态环境变化趋势进行了预测.结果表明:在拟建工程实施20a后黑河下游地下水位总体上处于下降趋势,但下降幅度呈逐年减少状态直至趋于新的动态平衡.金塔-鼎新盆地地下水位下降幅度最大的地段是黑河沿岸为0.51～0.87m,但由于人工农业绿洲补充,故生态环境不会有大的改变.额济纳盆地地下水位下降幅度最大的地段是古日乃及外围,分别为1.0m以上和0.5～1.0m,将引起植被的衰亡和种群的更替变化;大部分地段地下水位下降幅度介于0.0～0.50m之间,对现有的生态与环境影响不显著;桃来三达-额济纳旗以北地下水位呈现上升趋势,上升幅度为0.10～0.87m,东居延海一带上升幅度大于0.87m,这一地区植被长势趋于良好,植被覆盖率会有所增加,将形成围绕海子的天然绿洲.
|
| 关 键 词： | 拟建水利工程 下游生态环境 地下水位变化 影响分析 黑河干流 |
Influence Analysis of the Proposed Water Conservancy Project in the Trunk Stream on Ecological Environment in the Lower Reaches of Heihe River |
| |
| YAO Xing-rong,DING Hong-wei,SHEN Yong-ping,LAN Yong-chao,ZHAO Yu-ping,CAO Xiao-hui,YIN Zheng.Influence Analysis of the Proposed Water Conservancy Project in the Trunk Stream on Ecological Environment in the Lower Reaches of Heihe River[J].Journal of Glaciology and Geocryology,2012,34(4):934-941. |
| |
| Authors: | YAO Xing-rong DING Hong-wei SHEN Yong-ping LAN Yong-chao ZHAO Yu-ping CAO Xiao-hui YIN Zheng |
| |
| Institution: | 1(1.Institute of Hydrogeological and Engineering Geology,Gansu Province Bureau of Geology and Mineral Exploitation and Development,Zhangye Gansu 734000,China;2.Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Lanzhou Gansu 730000,China;3.Key Laboratory of Heihe Ecological and Basin of Gansu Province,Lanzhou Gansu 730000,China) |
| |
| Abstract: | In this article,the method of groundwater balance is used to quantitatively compare and analyze the changing trend of the groundwater resources in the lower reaches of the Heihe River,based on a typical year of observation and previous researches.The software Visual Modflow 3D for unsteady groundwater flow system is also used to forecast the changing trend of groundwater level and ecological environment in the lower reaches in the next twenty years(2008-2028),before and after the proposed water conservancy project completed.The results show groundwater level in a downward trend in general,approximating to a new dynamic equilibrium by degree.In the basin of Jinta-Dingxin,the maximum groundwater level decline,0.51~0.87 m,is located in the waterfront along the river.However,owing to the supplementary of artificial agriculture oasis ecological,the environment will not change so much.In Egin basin,the maximum groundwater level decline area is located in Gurinai(1.0 m) and its periphery(0.5~1.0 m),where vegetation decline and fall,as well as population supersedure,can be seen;in most of the remaining areas,the groundwater level decline is between 0.0~0.50 m,where significant impact on ecology and environment has not been seen;groundwater level is rising in the north of Taolaisanda and Ejin Banner,where the water level rising by 0.10~0.87 m;in the east of Juyanhai Lake,the rising rate is more than 0.87 m,where vegetation growing is good,and the vegetation coverage is increasing and natural oases are forming around the lake. |
| |
| Keywords: | proposed water conservancy project ecological environment in the lower reaches variation of groundwater level influence analysis Heihe River trunk stream |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
