Characteristics of Soil Moisture Changes Under Typical Utilization Types in the Windy and Sandy Areas of Northwest Liaoning
Taking different land use types in the southern edge of Horqin Sandy Land as the research object,the soil moisture content of 0-150 cm soil layer was measured from April to October 2022,and the soil moisture content of 0-150 cm soil layer was measured from April to October 2022,and the distribution characteristics of soil vertical profile moisture content,soil water storage change characteristics and soil e-vapotranspiration change characteristics under five patterns of the vertical profile distribution characteristics,soil water storage change charac-teristics,and soil evapotranspiration change characteristics of soil moisture under five patterns of Pinus sylvestris var.mongolica forest land,shrubbery,grassland,farmland and semi fixed sandy land were analyzed.The results showed that the distribution of soil moisture content in shrublands and grasslands was in a"W"shape;the water content distribution of Pinus sylvestris plantation and semi fixed sandy land was"U"shape;the distribution of water content in farmland showed an inverted"U"shape,and the position of the minimum water content was related to the distribution of vegetation roots in the land use type.The soil water storage capacity of different land use types had obvious seasonal varia-tion characteristics,and the changes in rainfall were basically consistent.All 5 types of land use had surplus soil moisture,among which grass-land had the best entropy retention effect.Therefore,priority should be given to herbaceous plants for ecological vegetation restoration in the region,in order to facilitate the soil water environment and its sustainable utilization.
Soil moisture contentLand use typeWater storage capacityEvapotranspirationChange characteristicsWindy and sandy areas of northwest Liaoning
国家科技期刊平台
NSTL
万方数据
