天山云杉林生物量及其变化规律的研究

Study of Biomass of Piceaschrenkianavar.tianschanicaand Its Variation

选择新疆天山山脉从西到东处于不同经度位置3个地点(巩留、乌鲁木齐和哈密)的天山云杉林群落进行垂直样带调查,根据所调查数据及已建立的回归方程推算了不同地点天山云杉林的生物量,并分析了其随海拔梯度和林木径级的变化规律。结果表明:不同地点天山云杉林生物量变化在100.921t·hm-2和436.915t·hm-2之间,不同地点天山云杉生物量总体呈现西部大于中东部的趋势,天山云杉生物量随海拔梯度和林木径级的变化总体上都呈现单峰型。

A vertical transect investigation on Picea schrenkiana var. tianschanica forest communities in three locations with different longitudes （Gongliu, Urumqi and Hami） along the Tianshan Mountains from west to east was conducted. The biomass was estimated with the regression equations and the data of the community investigation. Variations of the biomass along with the altitudinal gradients and DBH classes were analyzed. The results showed that the biomass in different sites ranged from 100. 921 to 436. 915 t hm-2. The biomass of the forest in the west part of Tianshan Mountains was higher than those in the middle or the east part. Variation of biomass along the altitudinal gradients and with the DBH classes all revealed a unimodal pattern.