Dynamics of Aboveground Parts of Artificial Vegetations in Desert Region

The study investigated aboveground growths of Caragana korshinskii and Artemisia ordosica planted in four modes,revealing that in different planting modes their densities,heights and canopy width and biomasses remained unchanged or tended to decrease slightly;the young shoots of A.ordosica annually grew in a S-shaped cure and the young shoots of C.korshinskii grew fast in spring and grew slowly or cease to grow from July on;the biomasses and leaf area indexes of C.korshinskii and A.ordosica annually varied in a double-peak curve and there were 8 annual plants that invaded in the four planting modes and formed higher coverage;the quadrat with only A.ordosica appeared to have obviously lower coverage and biomass that the other three quadrats.