Spatial and temporal analysis of soil moisture in Xilingol steppe
In order to study the characteristics of the temporal and spatial differences of soil moisture in different steppe areas of the Xilingol steppe in Inner Mongolia,the changes in soil moisture and total water storage of three steppe types of vegetation from May to Sep-tember in 2017 were analyzed using the gray correlation method and the analysis of variance method.The results showed that:1)In the section direction,the soil moisture correlation of meadow steppe and desert steppe reached the highest value in the middle and deePlayers,respectively,0.7250 and 0.7865,while the highest value of the typical steppe soil moisture correlation was 0.8071 in the surface and dee-Players.2)On different time scales,there were differences in the correlation degree of soil moisture of different steppe types.Taking the early May of vegetation growth as a reference sequence,the change trend of soil moisture in meadow steppe is a dynamic change of decrea-sing-increasing.The soil moisture correlation degree of typical steppe shows a decreasing-increasing-decreasing trend,while the princi-ple of desert grass has the opposite dynamic characteristics of typical steppe.3)From the perspective of different steppe types in the same month,the total soil water storage of desert grassland from July to August was significantly different from the total water storage of typical steppe and meadow steppe,and there is no significant difference in the remaining months.
steppe typesoil moisturegrey correlation degreesoil water storagetemporal and spatial characteristics
万方数据
维普
