茂兰喀斯特森林生物量构成初步研究

 本研究用收获法测定了30株样木的生物量，建立相对生长关系式用以估测群落生物量。茂兰喀斯特森林的典型群落圆果化香、青冈栎林地上部分生物量为168.02t／hm2，属低生物量的森林生态系统。研究了山脊，坡地，漏斗喀斯特森林的生物量变化；乔木层生物量按生活型、层次和物种的分配；喀斯特森林树种的生产结构的特点及其形成原因。

A PRELIMINARY STUDY ON BIOMASS COMPONENTS OF KARST FOREST IN MAOLAN OF GUIZHOU PROVINCE,CHINA

The tree relative growth equations were established on the basis of measurement values of 30 sample trees using harvest method, which were used to estimate the forest community biomass. The result showed that the above-ground biomass of the typical community dominated by Platycarya longipes and Cyclobalanopsis glauca in Maolan Karst forest was 168.02t/hm2. It is ranked within the forest ecosystems of low biomass. The biomass variances of 3 different forest types distributed on mountain ridge, mountain slope and mountain valley in Maolan Karst region were investigated. The biomass components were analyzed according to life form, storey and species within tree stratum. The productive structures of some tree species as well as their reasons were also discussed.