基于墒情自动测报的江苏省土壤墒情时空变化规律研究OA

By studying the spatiotemporal variation law of soil moisture in Jiangsu province under natural conditions,it can provide scientific basis for drought prevention and disaster reduction,water conservancy planning and construction,and regional water resources development and management.Based on the data of soil moisture in Jiangsu Province from 2016 to 2022,combined with the effects of soil physical characteristics,precipitation and evaporation,the change law of soil moisture in Jiangsu Province was analyzed from different perspectives.The results indicate that:Spatially,the soil moisture content in Jiangsu Province has been increasing from north to south of Jiangsu Province on average for many years;The inter-annual variation of soil water content was obviously affected by precipitation and evaporation factors,and was positively correlated with precipitation and negatively correlated with evaporation;The annual variation of soil moisture can be roughly divided into four periods:stable period,large consumption period,rapid recovery period and slow consumption period.