四川林业科技2011，Vol.32Issue(4)：68-72,5.
人工云杉林试验林窗环境特征及对幼苗存活的影响
Environmental Characteristics of the Experimental Gap in a Spruce Plantation and their Effect on Survival of Seedlings
摘要
Abstract
Artificial forest gaps were formed in a spruce plantation in Miyaluo,Li county,Western Sichuan.Environmental factors such as soil temperature,air temperature,relative air moisture,relative light intensiy,soil pH and soil moisture were continuously monitored in the gap and under the forest canopy.The results were shown as follows：soil air temperature in the gap increased by 0.46 ℃ and 0.35 ℃,respectively,compared with that under the forest canopy.Relative air mositure was slightly higher in the gap than under the forest canopy.However,in contrast with the forest canopy,artificial forest gap on average enhanced relative light intensity by 69.7%.No significant differences in pH between gap and forest canopy were detected but there was a seasonal change.Soil mositure in the gap was slightly higher than that under the forest canopy,but the difference was not significant.All spruce seedlings growing under the forest canopy were found to be dead,but the survival rate of the seedlings growing in the experimental gap was 23.75%.All in all,although experimental gap did not influence most of expeimental factors,significantly increased light intensity in the experimental gap partly enhanced the survival of the seedlings.Fig 8,Ref 19关键词
人工云杉林/林窗/环境因子/相对光照强度Key words
Spruce plantation/Forest gap/Environmental factors/Relative light intensity分类
农业科技引用本文复制引用
万川,胡蓉,陈劲松,徐振锋,林波,刘庆..人工云杉林试验林窗环境特征及对幼苗存活的影响[J].四川林业科技,2011,32(4):68-72,5.基金项目
中国科学院“西部之光”人才计划项目 （）
