The Zhifanggou watershed in Ansai county is an example of a Loess Hilly Region and the characteristics of nutrient cycling and balance of 1 tree,4 shrub,and 9 herbage vegetation types have been systematically studied during a period of vegetation stabilization and rehabilitation.The results showed that nutrient content of leaves was higher than that in newshoots of wattle trees which was higher than that in limbs and trunks.The accumulated biomass,N and P_2O_5 of tree vegetation was higher than that of shru...
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