| 半干旱区域高速公路绿化带建设对地下水循环的影响:以京藏高速公路呼包段为例 |
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| 引用本文： | 夏蔓宏,董少刚,张涛,李铱,王超,程雅娟,李政葵.半干旱区域高速公路绿化带建设对地下水循环的影响:以京藏高速公路呼包段为例[J].现代地质,2019,33(2):412-421. |
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| 作者姓名： | 夏蔓宏 董少刚 张涛 李铱 王超 程雅娟 李政葵 |
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| 作者单位： | 1.内蒙古大学 生态与环境学院, 内蒙古 呼和浩特 0100212.呼和浩特市环境科学研究所,内蒙古 呼和浩特 0100003.呼和浩特市清洁能源推广办公室,内蒙古 呼和浩特 010030 |
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| 基金项目： | 国家自然科学基金项目(41562020);国家自然科学基金项目(41702250);国家自然科学基金项目(41002129);内蒙古自治区自然科学基金项目(2018MS04004);内蒙古自治区研究生科研创新资助项目(10000-16010109-29) |
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| 摘 要： | 高速公路绿化带能美化环境,吸尘减噪,保持水土,但在降水量少的干旱地区,高速公路绿化带主要依赖地下水补给,会对区域地下水资源分布产生一定影响。以土默川平原北部呼包高速绿化带为研究对象,利用3S技术将研究区的绿化带进行分类,同时,结合ET0等相关公式计算绿化带的蒸腾耗水量。在收集区域水文地质资料的基础上,掌握研究区的地下水补径排特征,计算研究区侧向补给量,进而得出绿化带蒸腾耗水量与地下水补给量之间的关系,定量分析高速公路绿化带建设对区域地下水循环的影响。结果表明:研究区地下水补给主要来源于大青山山前侧向补给,主要排泄为地下水径流排泄及绿化带的蒸腾耗水;2016-07—2017-06期间,研究区非植被区、植被覆盖区分别占总面积的17%和83%,绿化带年蒸散发量为1 006.10 mm,蒸腾耗水量为2 434.86×104 m3/a;山前侧向补给量为24 372.16×104m3/a;绿化带蒸腾耗水量约占山前侧向补给量的10%。由此可见,高速公路绿化带的建设对地下水资源分布有着重要的影响。
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| 关 键 词： | 高速公路绿化带 半干旱区域 植被蒸腾量 地下水均衡 |
| 收稿时间： | 2018-02-17 |
| 修稿时间： | 2018-12-20 |
Effect of Greenbelt Construction on Groundwater Circulation in Semi-arid Region: A Case Study from Hohhot-Bautou Section of Beijing-Tibet Expressway |
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| XIA Manhong,DONG Shaogang,ZHANG Tao,LI Yi,WANG Chao,CHENG Yajuan,LI Zhengkui.Effect of Greenbelt Construction on Groundwater Circulation in Semi-arid Region: A Case Study from Hohhot-Bautou Section of Beijing-Tibet Expressway[J].Geoscience——Journal of Graduate School,China University of Geosciences,2019,33(2):412-421. |
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| Authors: | XIA Manhong DONG Shaogang ZHANG Tao LI Yi WANG Chao CHENG Yajuan LI Zhengkui |
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| Institution: | 1. College of Ecology and Environment, Inner Mongolia University, Hohhot, Inner Mongolia 010021, China2. Institute of Environmental Science of Hohhot, Hohhot, Inner Mongolia 010000, China3. Hohhot Clean Energy Promotion Office, Hohhot, Inner Mongolia 010030, China |
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| Abstract: | Highway greenbelts can beautify the environment, absorb dust and noise, and conserve water and soil. However, in arid areas with low precipitation, highway greenbelts mainly rely on groundwater recharge, which would have certain impact on regional groundwater resources distribution. This paper takes the Hubao highway greenbelt in the northern part of the Tumochuan Plain as a case study. Based on the analysis of the groundwater recharge characteristics, 3S technology and the Penman formula are used to calculate the transpiration rates under different vegetation coverage along the highway greenbelt. Groundwater recharge and the impact of highway greenbelt construction on the distribution of groundwater resources in the Beijing-Tibet Expressway are then analyzed. The results show that groundwater in the study area comes mainly from lateral recharge of the Daqingshan Mountain. The main discharge is groundwater runoff and transpiration along the greenbelt. During the period of July 2016 to June 2017, the non-vegetation and vegetation covered parts (17% and 83% of the total area, respectively) of the study area has an annual evapotranspiration of 1,006.10 mm. Along the greenbelt, transpiration water consumption is of 2,434.86×104 m3/a, and lateral recharge from the mountain front is of 24,372.16×104 m3/a. The transpiration water consumption of the greenbelt accounts for 10% of the lateral recharge from the mountain, which shows that the construction of highway greenbelts has an important impact on the distribution of groundwater resources. |
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| Keywords: | highway greenbelt semi-arid region vegetation transpiration groundwater budget |
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