CHANGES IN VEGETATION AND SOIL PROPERTIES UNDER DIFFERENT AGE GROUPS OF CARAGANA KORSHINSKII FORESTS IN HIGH-ALTITUDE SANDY AREAS
To understand the effects of planting Caragana korshinskii on secondary plants and soil physicochemical properties in sandy areas,this study focuses on the characteristics of understory vegetation and soil physicochemical properties in different periods of Caragana korshinskii forests at the Shazhuyu Sand Control Experimental Station in Gonghe County.The results showed that with the increase of forest age,the diversity of understory plants shows a trend of"increase decrease increase",and the dominant species of understory herbaceous plants have evolved from annual amaranth plants to perennial Asteraceae and leguminous plants.Planting Caragana korshinskii can significantly reduce the pH and moisture content of the surface soil in sandy areas,while planting Caragana korshinskii forests for more than 30 years significantly increases soil organic matter content and alkaline nitrogen content(P＜0.05).
万方数据
维普
