Ecological stoichiometric characteristics of plants and soil in grassland under different restoration types in Yunwu Mountain, China

Ying yong sheng tai xue bao = The journal of applied ecology
Ying FangRen Tian Ma

Abstract

Carbon (C), nitrogen (N) and phosphorus (P) stoichiometry from the aboveground parts of plants, roots, plant litter and soils, as well as their relationships were studied in grassland under four distinct types of vegetation recovery including natural grassland, grassland with shrubs, grassland after grazing exclusion, and abandoned cropland in Yunwu Mountain, China. The results showed that there was significant correlation among the ecological stoichiometric characteristics of soils with the aboveground parts and roots. The relation between the aboveground parts and roots was closer in P concentration than in N concentration. The linkage of plants and soils was closer in N concentration than in P concentration. The ecological stoichiometric relationships between soils and litter as well as between roots and litter were weak. There was no significant difference between the aboveground parts and roots in total C and N storages among four distinct recovery methods. How-ever, the P storage differed greatly among the four recovery types with the maximum of 0.49 g·m-2 in the abandoned cropland and the minimum value of 0.29 g·m-2 in the grassland after grazing exclusion. Grazing prohibition duration had minor effects on ecological sto...Continue Reading

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