【摘要】 地下水是湿地的重要组成部分,对湿地生态系统变化起着重要作用,影响到整个湿地生态系统的稳定性。为考察若尔盖高寒湿地花湖周边地下水潜水位埋深变化,本文通过对2015—2017年间在若尔盖湿地花湖区域布设的6个地下点位所获得的潜水位埋深数据进行分析。结果如下:1、6个监测点潜水位最浅的是花湖-3号,潜水位平均埋深14.9 cm,年际变化在2～34 cm;地下水埋深最深的监测点为花湖-5号,潜水位平均埋深128.3 cm,年际变化在67～197 cm。年均潜水位埋深最大差异达到113.4 cm。2、从全年来看2月、12月潜水位埋深最高、6月和9月埋深最低;比较各个监测点的潜水埋深的2015年和2016年年度极差的平均值发现,花湖-3号监测点的潜水埋深年度极差最小,仅仅23.1 cm,而花湖-4号潜水埋深极差最大,达到100.5 cm。这说明各个监测点之间不仅潜水位差异大,潜水位的季节变化差异也很大。年均潜水埋深越浅的区域潜水位季节性变化越小,而潜水埋深越深的区域潜水位季节性变化越大。本研究通过对若尔盖湿地花湖区域的地下水潜水位埋深变化进行分析,以期为若尔盖湿地的保护与管理提供相关数据支撑。更多还原

【Abstract】 Groundwater is an important part of wetland, which plays an important role in the changes of wetland ecosystem and affects the stability of the whole wetland ecosystem. In order to investigate the change of groundwater depth around Huahu lake in Zoige alpine wetland, we analyzed the data of groundwater depth obtained from 6 locations around Huahu lake in Zoige alpine wetland from 2015 to 2017. The results were as follows:(1) Huahu-3 was the shallowest among the 6 monitoring locations, with an average depth of 14.9 cm(inter-annual variation was 2-34 cm);Huahu-5 was the deepest with groundwater depth, with an average phreatic depth of 128.3 cm(inter-annual variation was 67-197 cm). The maximum difference in annual average groundwater depth was 113.4 cm.(2) On the whole year,the highest groundwater level occurred in February and December, while the lowest in June and September. When comparing average value of annual extreme difference of groundwater depth of each monitoring location in 2015 and2016, it was found that the annual extreme difference of groundwater depth of Huahu-3 monitoring location was the smallest, only 23.1 cm, while that of Huahu-4 was the largest, reaching 100.5 cm. This suggested that the variation varied greatly not only in groundwater depth among the 6 monitoring locations, but also in the seasonal changes of groundwater depth. Seasonal variation of groundwater depth was smaller in areas with shallower annual groundwater depth, but greater in areas with deeper groundwater depth. In this study, the variations of groundwater depth around Huahu lake in Zoige alpine wetland was analyzed in order to provide relevant data support for the protection and management of Zoige wetland.更多还原