文献类型：期刊文献

中文题名：毛红椿人工林树干液流动态变化对坡位的响应

英文题名：Trunk sap flow dynamic changes in response to the slopes of plantation of Toona ciliata var.pubescens

作者：刘军[1] 陈文荣[2] 徐金良[3] 邹军[2] 姜景民[1] 李彦杰[1] 刁松峰[1]

第一作者：刘军

机构：[1]中国林业科学研究院亚热带林业研究所;[2]福建省国有来舟林业试验场;[3]开化县林场

年份：2014

卷号：25

期号：8

起止页码：2209-2214

中文期刊名：应用生态学报

外文期刊名：Chinese Journal of Applied Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2011】；CSCD:【CSCD2013_2014】；PubMed;

基金：浙江省重大项目(2012C12908);国家自然科学基金项目(31100487);林业公益性行业科研专项(201104001;201204307)资助

语种：中文

中文关键词：毛红椿;人工林树干液流;坡位;环境因子

外文关键词：Toona ciliata var. pubescens; plantation; sap flow; slope position; environmental fac-tors.

分类号：S718.43

摘要：2012年7—10月,采用液流测定系统监测了位于浙江省开化县的毛红椿人工林上下坡位的树干液流,并同步监测生态环境因子,分析了毛红椿人工林树干液流与土壤含水量、温度和水势等环境因子的关系.结果表明:研究区上、下坡位树干液流日变化均呈典型的"昼高夜低"单峰曲线;下坡位毛红椿树干液流速率平均值显著高于上坡位;上坡位土壤温度显著高于下坡位,而下坡位土壤含水量和土壤水势显著高于上坡位;下坡位土壤含水量和土壤水势是影响毛红椿树干液流速率的主要因子,而上坡位土壤温度和土壤水势对毛红椿树干液流速率有较大影响.
The sap flow and environmental factors, including temperature, water content and water potential of soil, were continuously measured by using an auto-data collection system at the upper and lower slopes of Toona ciliata vat. pubescens plantation in July to October, 2012 to investigate the relationships between the sap flow and environmental factors. The results showed that, the trunk sap flow velocity of the two positions both presented a typical single-peak curve, with high values in the daytime and low values in the nighttime. The average sap flow of the lower slope was significantly higher than that of the upper slope, Soil temperature of the upper slope was significantly higher than that of the lower slope, and soil water content and water potential were vice versa. Soil water con- tent and water potential were the leading environmental factors affecting the trunk sap flow velocity at the lower slope, while soil temperature and water potential were the main environmental factors at the upper slope.