With the methods of representative field sampling investigation and laboratory analysis,this paper studied the differences of soil water content in forestland,the biomass of root system of tree and the biodiversity under the degradated Robinia pseudoacacia by root-sprout regeneration and reforestation(Plantycladas orientalis forest) at semi-arid loess hilly region.The results showed that the soil moisture and biodiversity index of root-sprout regenerated forest were better than reforestated P.orientalis for...
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