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塔里木沙漠公路防护林的温度和湿度效应研究
Authors
孙树国
常青
+5 more
李应罡
李生宇
王海峰
范敬龙
雷加强
Publication date
1 January 2008
Publisher
Abstract
在塔克拉玛干沙漠腹地采用多个HOBO温湿度自动观测仪器进行同步观测的方式,对极端干旱区防护林小气候中的气温、湿度分别进行了水平和垂直两个尺度上的观测.结果表明:沙漠公路防护林生态系统具有稳定近地层空气气温和提高空气湿度等典型的小气候调节作用.太阳辐射对防护林温湿度影响显著,辐射强度的大小与气温呈正相关,与空气湿度负相关,在阴天时林带保温保湿效果明显;防护林对周围环境的影响较显著,防护林带内小气候具有降温保湿的特征:林内气温总是小于原始沙地,林内湿度总是大于原始沙地,林边气温升降幅度大于原始沙地,林边湿度总是大于原始沙地.并且计算得出防护林垂直影响范围温度4~10m,湿度6~8m;水平影响范围温度16m,湿度24m左右
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Last time updated on 29/11/2016