浑善达克沙地地下水位动态变化及其影响  被引量:3

Dynamic Change of Groundwater Level and Its Influence in Hunshandake Sandy Land

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作  者:闫婷[1,2] 黄海广 闫德仁[1] 松晓[3] YAN Ting;HUANG Hai-guang;YAN De-ren;Songxiao(Inner Mongolia Academy of Forestry,Hohhot 010010,China;Inner Mongolia Key Laboratory of Sandy Land(Desert)Ecosystem and Eco-engineering,Hohhot 010010,China;Hohhot Forestry and Grassland Protection Center,Inner Mongolia,Hohhot 010020,China)

机构地区:[1]内蒙古自治区林业科学研究院,内蒙古呼和浩特010010 [2]内蒙古自治区沙地(沙漠)生态系统与生态工程重点实验室,内蒙古呼和浩特010010 [3]呼和浩特市林业和草原保护中心,内蒙古呼和浩特010020

出  处:《内蒙古林业科技》2021年第2期20-23,共4页Journal of Inner Mongolia Forestry Science and Technology

基  金:多伦生态站运行项目(2019132012);国家重点研发项目(2016YFC050080301)。

摘  要:降雨和地下水位等动态变化对固沙植被生长及其稳定性具有重要影响。采用定位定时自动观测方法,研究了浑善达克沙地多伦生态站风沙土地下水位变化及其对降雨特征的响应。结果表明,沙地地下水位埋深年平均在2.95~3.00 m,其变化幅度小于10 cm。在植物生长季地下水位处于最低期,其他时间基本属于地下水位回升恢复期。持续累计降雨大于40 mm时对地下水位变化有影响,当降雨量达56.64 mm时,地下水位埋深明显回升。年地下水位埋深呈现波浪式变化趋势,且降雨对沙地地下水位的补给具有滞后效应,并与持续累计降雨量大小有关。Dynamic change of rainfall and groundwater level has an important impact on the growth and stability of sand-fixing vegetation.By use of the positioning and timing automatic observation method,the changes of groundwa-ter level for the aeolian soil and its response to rainfall characteristics were studied in Duolun Ecological Station of Hunshandake Sandy Land.The results showed that the annual average groundwater depth in Hunshandake Sandy Land was 2.95-3.00 m,with the variation range less than 10 cm.The groundwater level was at the lowest period in the growing season of plant,and it was basically the recovery period in other time.The changes of groundwater level had been reflected when the continuous accumulated rainfall was more than 40 mm,and the groundwater depth raised obviously when the rainfall reached 56.64 mm.The annual groundwater depth showed a waving trend,the rainfall had a lagging effect on the recharge of groundwater level in sandy land,and it was related to the continuous accumulated rainfall.

关 键 词:浑善达克沙地 地下水位 累计降雨量 

分 类 号:P641[天文地球—地质矿产勘探]

 

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