粤西南亚热带森林演替过程中的生物量与净第一性生产力动态

摘要/Abstract

摘要： 以粤西黑石顶自然保护区为对象,探讨了南亚热带森林群落演替系列上3个主要演替阶段的代表类型:针叶林(马尾松群落)、针阔混交林(马尾松+吊皮椎+木荷+枫香群落)、南亚热带常绿阔叶林(粘木+小叶胭脂+光叶红豆+黄果厚壳桂群落)的生物量和净第一性生产力及其分配规律.结果表明,针叶林生物量为246.697t·hm^-2,净第一性生产力为14.715t·hm^-2·yr^-1;针阔混交林生物量为287.367t·hm^-2,净第一性生产力为17.179t·hm^-2·yr^-1;常绿阔叶林生物量为357.976t·hm^-2,净第一性生产力为18.730t·hm^-2·yr^-1.可见黑石顶自然保护区南亚热带3种森林群落的发展阶段已比较接近,即针叶林、针阔混交林较为成熟,常绿阔叶林相对年轻.在不受或低度外界干扰的情况下,随着森林群落的正向演替,其生物量和净第一性生产力均呈增加趋势.

关键词: 黑石顶, 南亚热带森林群落, 生物量, 净第一性生产力, 演替

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.

Key words: Heishiding, Lower subtropical forests, Biomass, NPP, Succession

中图分类号:

S718.5

杨清培, 李鸣光, 王伯荪, 李仁伟, 王昌伟. 粤西南亚热带森林演替过程中的生物量与净第一性生产力动态[J]. 应用生态学报, 2003, (12): 2136-2140.

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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