Dynamics of biomass and net primary productivity in succession of south subtropical forests in Southwest Guangdong

Abstract

Abstract: Coniferous forest (Pinus massoniana community),pine broad leaved mixed forest (Pinus massoniana + Castanopsis kawakamii+Schima superba+Liquidambar formosana) and evergreen broad leaved forest (Ixonanthes chinensis + Artocarpus styacifolius + Ormosia glaberrima + Cryptocarya concinna) are the three main communities representing 3 major stages in a secondary succession series in Heishiding Nature Reserve,Guangdong Province.Their biomass and net primary productivity (NPP) were studied by using harvest method (for trees and lianas) and clear cut method (for shrub and herb).The biomass and NPPwere 246.697 t穐m^-2 and 14.715 t穐m^-2穣r^-1 for the coniferous forest,287.367 t穐m^-2 and 17.179 t穐m^-2 穣r^-1 for the pine broad leaved mixed forest,and 357.976 t穐m^-2 and 18.730 t穐m^-2 yr^-1 for the evergreen broad leaved forest,respectively .These results indicated that these three stages were very close in the succession process,and that coniferous forest and mixed forest were more mature,while broad leaved forest was relatively young.Therefore,under the conditions of no or only minor disturbance,their biomass and NPP showed an increasing trend with the succession of the forest communities in Heishiding.

CLC Number:

S718.5

YANG Qingpei, LI Mingguang, WANG Bosun, LI Renwei, WANG Changwei. Dynamics of biomass and net primary productivity in succession of south subtropical forests in Southwest Guangdong[J]. Chinese Journal of Applied Ecology, 2003, (12): 2136-2140.

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