廊坊市土壤墒情时空变化规律分析

Analysis of soil moisture spatial and temporal variation laws in LangfangCity

本文选取了2016-2021年廊坊市12个旱情监测站土壤墒情资料,以及同时期降水量资料,(1)计算出10.00 cm、20.00 cm、40.00 cm及3层平均土壤含水率的多年月平均值,并绘制月平均土壤含水率及月平均降水量趋势图,得出土壤含水率年内变化规律与降水量季节性年内分配规律基本一致;(2)计算出10.00 cm、20.00 cm、40.00 cm及3层平均土壤含水率的多年平均值,并绘制多年平均土壤含水率及年降水量趋势图,得出年平均土壤含水率的年际变化受降水量影响显著;(3)按地域将廊坊市划分为南北两部分,计算出两个区域的月平均土壤含水率,并与廊坊市总的月平均土壤含水率对比分析,得出廊坊北部区域土壤含水率高于南部区域。本研究对廊坊市应对水旱灾害、合理指导农业生产活动及水资源合理利用,具有重要的意义。

This paper selects the soil moisture data of 12 drought monitoring stations in Langfang Area from 2016 to 2021 and the precipitation data in the same period,(1)The multi-year monthly average values of 10.00 cm,20.00 cm,40.00 cm and 3 layers of average soil moisture content are calculated,and the monthly average soil moisture content and monthly av-erage precipitation trend chart are drawn.The annual change rule of soil moisture content is basically consistent with the sea-sonal annual distribution law of precipitation;(2)The multi-year average values of 10.00 cm,20.00 cm,40.00 cm and three layers of average soil moisture content are calculated,and the trend charts of multi-year average soil moisture content and annual precipitation are drawn.It is concluded that the inter-annual change of annual average soil moisture content is significantly afcted by precipitation;(3)Langfang Area is div ided into North and south parts according to the region,and the monthly average soil moisture content of the two regions is calculated,and compared with the total monthly average soil moisture content of Langfang Area,it is concluded that the soil moisture content of the north region of Langfang Area is higher than that of the South Region.This study is of great significance for Langfang Area to deal with flood and drought disasters,to guide agricultural production activities and to make rational use of water resources.