云南中甸长苞冷杉群落的生物量和净生产量研究

Studies on Biomass and Net Phmarv Pfoduction of Abies georgei Communitv

本文研究了云南中甸县吉迪村长苞冷杉群落的生物量和净生产量。结果为：长苞冷杉群落的生物量为３５１．６２３ｔ／ｈｍ￣２，其中乔木层占９７．８７％，灌木层占０．１４％，草本层占０．１７％，苔藓层占０．６７％，凋落物占１．１５％。群落的净生产量为１２３０．６ｇ／ｍ￣２·ａ，其中乔木层占９４．６２％，灌木层占０．７０％，草本层占１．６３％，苔藓层占３．０５％，优势种长苞冷杉的生物量和净生产量分别为３３４．７７７ｔ／ｈｍ￣２和１０９７．８ｇ／ｍ￣２·ａ，分别占群落总量的９５．２１％和８９．２１％。其它乔木材种的生物量和净生产量分别为９．３６４ｔ／ｈｍ￣２和６６．６ｇ／ｍ￣２·ａ，分别占群落总量的２．６６％和５．４１％。

In this paper,the biomass and net primary productionos of Abiesgeorgei community at the altitude about 3660m in Zhofigdian County,Yunnan Province(28°12′N. and 99°40′E.)are studied. The estimated total biomass of A. georgei com-munIty ls 351. 623 t/ hm￣2, of wnicn 97. 87% is tree layer,0.14% shrub layer,0.17%herb layer,0.67 % mosses and 1.15% litters.The net primary productionof A. georgei community is l230.6 g/m￣2·a, of which 94.62% is tree layer,0.70%shrub layer,1.63% herb layer,and 3.05% mosses. The biomass of dominant A. georgei1s 334.777t/ hm 2,the net primary production is 1097.8 g/ m￣2·a, and the percen-tages are 95.2l % and 89.21% of the total amount respectively. The biomass of other treespecles is 9.j64 t / hm￣2,the net primary production is 66.6 g / m￣2·a, the percentagesare 2.66% and 5.41 % oftotal amount respectively.