Effects of Grass Litter on Combating Soil Polarization of Robinia pseudoacia Forest in the Loess Plateau
Soil polarization due to pure forests is an important problem affecting the stability and sustainable development of ecosystem and the most effective solution may be fertilizing with grass litter or forming tree-grass complex ecosystem.For this study,Robinia pseudoacia forest widely distributed in the Loess Plateau was chosen as objective and a 120 d incubation experiment of forest soil mixed with 7 grass litters was carried out to investigate the effects of grass litter on combating soil polarization.The results showed that Medicago sativa was the most effective on improving the soil properties of the loess hilly areas (Huangling),followed by Melilotus officinalis,but Leapedeza bicolor exacerbated the soil properties obviously,followed by Vicia villosa,Onobrychis vicii f olia and Astragalus adsurgens.Melilotus of ficinalis and Astragalus adsurgens significantly improved the soil properties of the loess gully area(Chunhua),followed by Vicia villosa,but Coronilla varia exacerbated the soil properties obviously,followed by Onobrychis viciifolia.
NETL
NSTL
万方数据
维普
