Invasive Species Compendium

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Abstract

Study on the characteristics of litter and soil under evergreen broadleaved forests dominated by Cyclobalanopsis glauca in Zhejiang, China.

Abstract

Nutrient cycling in evergreen broadleaved forests dominated by Cyclobalanopsis glauca [Quercus glauca] was studied in 1990-94 in the Longjiang Branch of Jiande Forest Centre, Zhejiang, China. The amount of litter was 14.141 t/hm2. Chemical analysis of the litter showed that it contained the following components: in g/kg organic C 34.36, N 0.96, P 0.029, K 0.18, Ca 0.56, Mg 0.11 and Mn 0.21; and in mg/kg Cu 8.57 and Zn 79.14 mg/kg. Concentrations of the same components in soil ranged from 9.13 mg/kg to 1.11 g/kg, in the ranking organic C > K > N > Mg > Ca > P > Zn > Cu. Concentrations varied with season and soil depth: C, N and Ca decreased with increasing depth; K and Mg were lower at the surface and higher in deeper layers; and P, Cu and Zn were higher in the H and A layers. Accumulation varied with element and plant species. Ca had highest coefficient of accumulation, the next highest was for N, and the lowest were for Cu and Zn. Lianas, herbs and understorey plants had a higher coefficient of accumulation than shrubs and trees.