热带山地雨林尖峰栲边材液流及其与环境因子的关系

被引：12

作者：

张刚华 ^{[1
]}

陈步峰 ^{[1
]}

聂洁珠 ^{[2
]}

林明献 ^{[1
]}

机构：

[1] 中国林业科学研究院热带林业研究所

[2] 江西理工大学

来源：

应用生态学报 | 2007年 / 04期

关键词：

边材液流密度; 环境因子; 蒸腾; 尖峰栲; 热带山地雨林;

D O I：

10.13287/j.1001-9332.2007.0125

中图分类号：

S718.5 [森林生态学];

学科分类号：

071012 ; 0713 ;

摘要：

应用热扩散法,采用ICT-2000TE环境与蒸腾系统同步监测了热带山地雨林尖峰栲边材液流速率和环境因子的变化.结果表明:尖峰栲边材液流速率的变化规律是晴天为单峰曲线、阴雨天气为双峰或多峰曲线.边材液流速率与太阳辐射、空气温度、蒸汽压亏缺、林内风速呈极显著正相关,与空气相对湿度呈极显著负相关.在旱季监测期间,其与土壤温度呈极显著正相关、与土壤湿度相关不显著;而在雨季,其与土壤湿度呈极显著正相关,与土壤温度相关不显著,说明降雨过程对边材液流影响较大.建立了旱季和雨季监测期间的边材液流与环境因子多元线性回归模型,经过F值检验,达极显著水平.旱季、雨季监测期间尖峰栲单株平均蒸腾量分别为103.5和41.3kg.d-1,单位林地面积蒸腾量分别为1.94和0.77mm.d-1.

引用

页码：742 / 748

页数：7

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