干旱区研究2013，Vol.30Issue(2)：248-255,8.
天山云杉倒木的持水特性
Water Retention Capacity of Picea schrenkiana var.tianschanica Fallen Trees in the Tianshan Mountains, Northwest China
摘要
Abstract
Fallen tree has an important role in forest ecosystem, especially in hydrology of mountainous forest ecosystem with water and soil conservation functions. The samples of fallen trees of Picea schrenkiana var. tianschanica (Rupr. ) Chen et Fu were collected from 5 areas (Zhaosu, Xinyuan, Hutubi, Tianchi and Qitai) across nine longitudes in the forest region in the Tianshan Mountains so as to understand the water retention capacity and its hydro-logical function in forest in the Tianshan Mountains. These samples were treated with soaking simulation. The results showed that, in the soaking process, the water retention capacity, specific retention and water retention capability of the P. schrenkiana fallen trees at 5 sampling sites were all increased with the increase of soaking time. The relationship between water retention capacity (Q) and soaking time (t) could be fitted by Q = alnt + b. But the water absorbing rate was decreased with the increase of soaking time from the decomposition level I to V. The relationship between water absorbing rate ( V) and soaking time (t) could be fitted by V = c t-d. The relationship between water retention capacity (Q') and decomposition level (x) could be fitted by Q' -ex2 +fx +g. So there was a significant difference of water retention capacity among P. schrenkiana fallen trees at 5 sampling sites. The study results offered the foundational data for further study on hydrological functions in forest in the Tianshan Mountains.关键词
天山云杉(Picea schrenkiana var.tianschanica)/倒木/持水量/持水率/吸水速率/天山山脉Key words
Picea schrenkiana var. tianschanica/ fallen tree/ water retention capacity/ specific retention/ water absorbing rate/ Tianshan Mountains引用本文复制引用
马现永,刘华,臧润国,白志强,刘贵峰,郭仲军,韩燕梁..天山云杉倒木的持水特性[J].干旱区研究,2013,30(2):248-255,8.基金项目
国家林业局林业公益行业科研专项(200904010) （200904010）
