“淘泉”对天然湿地土壤含水量的影响研究

Effect of Tao Spring on soil moisture content in natural wetland

目前,黑河湿地正面临着面积萎缩、功能退化的问题,用水矛盾越来越突出。近年来,由于人工开挖毛渠取用湿地水用于下游农田灌溉的现象越来越普遍,这种人工干预湿地水循环的做法到底对湿地水资源的利用产生什么样的影响?2019年5—11月,项目以甘州区西大湖地湿为研究对象,就该湿地“淘泉”土壤含水量进行了研究,并进行了数据分析。结果表明:淘泉对湿地土壤含水量具有明显的影响,处理较对照年平均土壤含水量低7.92%,处理与对照土壤含水量年内变化随着时间的变化,差值呈现逐渐增大的趋势。该区域湿地为下游农田提供灌溉水源,但是存在严重的水资源供需矛盾,“淘泉”将会对湿地生态环境保护产生一定的不利影响。

At present,the Heihe wetland is facing the problem of area shrinkage and degradation,and the contradiction of water use is becoming more and more prominent.In recent years,it is more and more common to use wetland water for downstream irrigation due to the artificial excavation of wool canal.What kind of impact does this artificial intervention of wetland water cycle have on the utilization of wetland water resources?From May to November,2019,the project took Xidahu Wetland in Ganzhou District as the research object,studied the soil moisture content of Tao Quan in the wetland,and conducted data analysis.The results showed that Tao Quan had a significant effect on the soil water content of the wetland,and the average soil water content of the treatment was 7.92%lower than that of the control.The difference between the treatment and the control showed a trend of increasing with the change of time.The wetland in this area provides irrigation water for the downstream farmland,but there is a serious contradiction between supply and demand of water resources,Tao Spring will have a certain adverse impact on the wetland ecological environment protection.