晋西华北落叶松人工林生物量和生产力的研究

本文对华北落叶松人工林生物量和生产力进行了研究，结果表明：（１）华北落叶松胸径（Ｄ）、树高（Ｈ）、冠幅（Ｃ）和冠长（Ｌ）四个测树指标之间，测树指标与干、枝、叶生物量之间以及营养器官生物量之间具有较为密切的关系；（２）应用测树指标对地上部分生物量进行了回归，建立了华北落叶松相对生长方程，根据相关系数ｒ，选择最优模型，干为Ｗｔ＝７０５．３５Ｄ１．８１０５，地上部分为Ｗｏ＝２２４．４９（Ｄ２Ｈ）０．９４８９；枝为Ｗｂ＝－０．３１Ｈ２＋７．１５７７Ｈ－３２．３７８；叶为Ｗ１＝－３．４６０１Ｃ２＋１８．５３１Ｃ－２２．１６３；（３）晋西地区华北落叶松地上部分生物量和生产力分别为４１．９２９９ｔ／ｎａ和１．６７６８ｔ／ｎａ／ｙ；（４）干生物量主要集中在下部，而枝叶生物量主要集中在中部。

STUDY ON THE ABOVEGROUND BIOMASS AND PRODUCTIVITY OF LARIX PRINCIPIS-RUPPRECHTII ARTIFICIAL FOREST IN WEST OF SHANXI PROVINCE

The aboveground biomass and productivity of Larix principis-rupprechtii artificial forest in the west of Shanxi province are studied in this paper. The results show:(1) The relations between breast diameter, height, crown size and crown length; between tree measure index and biomass; and between the biomasses of trunks, branches and leaves, are remarkable. (2)The excellent models are selected according to the relative index(r). The model of trunk is W t=705.35D 1.8105 , aboveground's is W o=224.49(D 2H) 0.9489 ,branches' are W b=-0.31H 2+7.1577H-32.378; and leaves's are W l=-3.4601C 2+18.531C-22.163.(3) The aboveground biomass and productivity of L. principis-rupprechtii in the west Shanxi province are 41.9199t/ha and 1.6768t/ha/y respectivly and (4)Biomass of trunk is mainly concentrate in the middle-low part and biomasses of branches and leaves are in the middle part.