重庆缙云山慈竹种群年龄的初步研究

PRIMARY STUDY ON THE AGE OF NEOSINOCALAMUS AFFINIS POPULATION AT JINYUN MOUNTAIN, CHONGQIN

慈竹(Neosinocalamus affinis)系四川分布面积最大和用途最广的合轴型竹种。作者在重庆缙云山慈竹种群年龄研究过程中,发现慈竹种群之无性系个体的年龄与其个体生物量和各器官生物量相关密切,其器官数量也呈显著相关;慈竹秆的形态学特征与其个体的年龄,地下茎和地上茎(秆)的分枝级数与其年龄均呈直线相关。地下茎分枝级数(RSB_x)与其年龄(A_(rs))的回归模型:A_(rs)=(RSB_x_(max)+1)-RSB_x,相关系数Υ_(rs)=-1.0000,O_(x-1)=0;秆分枝级数(CB_x)与其年龄(A_c)之相关模型为A_c=CB_x,相关系数Υ_c=1.0000(一年生个体除外),O_(x-1)=0。

Neosinocalamus affinis is one of sympodium bamboo of various utilizations, which grows in most of the area in Sichuan. After studied age of Neosinocalamus affinis at Jinyun Mountain, Chongqin, the following laws is achieved: Age of Neosinocalarnus affinis has close relation with biomass of individuals organs numbers of organs, and morphological feature of its culm; Age of Neosinocalamus affinis linears relates to the number of branch class of rhizom and culm; The model about number of branch class of rhizome (RSB_x) to age of its individual (Trs): A_(rs)=(RSB_(xmax+1)-RSB_x, R_(rs)=-1_0 0000; o(x-1)=0; The model on the numbers of branch class about culm (CB_x) is to the age of its individual (A_c): A_c=CB_x, R_c=1.0000 (except one years individuals) σ_(x-1)=0; Two models are absolute targets to identify age of Neosinocalamus alfinis, the latter is more convenient and reliable.