鼎湖山森林生态系统演替过程中的能量生态特征  

The characteristics of ecological energetics of the forest ecosystem in the successional process in Dinghushan,Guangdong,China

作　　者：任海[1] 彭少麟[1] 

机构地区：[1]中国科学院华南植物研究所,广州510650

出　　处：《生态学报》1999年第6期817-822,共6页Acta Ecologica Sinica

基　　金：国家自然科学基金;华南生物中心课题;中国科学院鹤山丘陵综合试验站开放课题

摘　　要：以时空替代的方法，将灌草丛、针叶林、针阔叶混交林和季风常绿阔叶林等４个处于同一空间下的群落当作同一群落演替进程中的４个阶段，研究了鼎湖山南亚热带森林演替过程中的能量生态特征。结果表明，鼎湖山南亚热带森林群落演替过程中，其垂直层次、叶面积指数、冠层对太阳辐射能的截获量、叶生物量、总生物量、总初级生产力、总呼吸量、净初级生产力、枯倒木现存量和年输入量、昆虫啃食量、群落的能量现存量等随演替的进程而增加，但其速度并不均衡，前期增长迅速，而后期增长缓慢，趋于稳定与饱和。在这些能量学指标中，叶面积指数是基础，而能量现存量和生物量年增量则是森林生态系统生长、发育和演替的结果。Based on the spatial series of the shrubby grassland,coniferous forest,coniferous broad leaved mixed forest and monsoon evergreen broad leaved forest in Dinghushan forest,the characteristics of ecological energetics in succesional processes of Monsoon evergreen broadleaved forest have been studied.The layers,leaf area index,the acceptance of radiation energy,gross primary productivity,net primary productivity,leaf biomass,biomass,the amount of litterfall,the standing crop of fallen tree and stand pole,the annual biomass of tree mortality,annual herbivory,annual growth and the standing crop of energy are increasing continuously during the process of succession with an uneven rate.All the indexes of ecological energetics grow faster in the early stage and they are slower in the late stage.A detailed biomass accumulating curve in the monsoon evergreen broad leaved forest succession process is proposed by spatial replacing temporal method.

关 键 词：能量生态特征 演替 森林生态系统 鼎湖山 

分 类 号：S718.541[农业科学—林学]