Simulation Analysis of Field Water Circulation in Cold Region Based on WEP——Take Qinggang County as an Example
Water circulation system is one of the most important material circulation in nature,and the construction of regional water circulation system is an important way to rationally allocate water resources.Heilongjiang province is an important grain production area in China.With the implementation of a new round of revitalization plan in Northeast China,higher requirements are put forward for the protection of regional water resources.In this paper,WEP model software was used to simulate and analyze the natural water cycle in Qinggang County,Heilongjiang province.Monthly statistical data from 2018 to 2022 were used to establish a model,and the established model was verified and analyzed.The results showed that the total water resources increased by 8.83%in five years,and the maximum freezing depth of farmland soil decreased by 29%.The water content of the soil increased by 6.8%year on year,the total groundwater remained stable,and the groundwater in 2021 and 2022 was less affected by rainfall.The results showed that the total water resources in this area were relatively stable,and the freezing depth of soil had a great influence on the soil water content.As the thickness of the frozen layer decreased,the soil water content increased,and the thickness of the soil aquifer increased.As a result,the influence of the surface water on precipitation decreased,and the groundwater content became stable.
Qinggang countyWEP-L modelcold district farmlandwater circulation
万方数据
