文献类型：期刊文献

中文题名：坡位梯级微变化对红椎林木生长的影响

英文题名：The Influence of the Step-change of Slope Position on the Growth of Castanopsis hystrix

作者：郭文福[1,2] 郝建[1,2] 韦菊玲[1,2]

第一作者：郭文福

机构：[1]中国林业科学研究院热带林业实验中心;[2]广西友谊关森林生态系统国家定位观测研究站

年份：2019

卷号：0

期号：1

起止页码：52-56

中文期刊名：林业资源管理

外文期刊名：Forest Resources Management

收录：北大核心:【北大核心2017】；

基金：中国林科院基金项目(CAFYBB2014MB006);"十二五"国家科技支撑项目专题(2012BAD22B0105)

语种：中文

中文关键词：坡位梯级;红椎;生长;线状样地;坡位效应

外文关键词：step-change of slope position;Castanopsis hystrix;growth;linear sample plot;slope position effect of growth

分类号：F326.2;S75

摘要：在广西凭祥中国林科院热带林业实验中心伏波实验场14a生红椎人工林中设置顺山行状样地,进行小尺度坡位梯级微变化对林木生长和土壤性质变化影响的研究,为珍贵树种大径材培育的造林立地选择提供精准技术。研究结果表明:1)林木平均树高和胸径随坡位梯级上升而降低,不同坡位梯级对林木树高和胸径的影响呈显著差异;2)土壤大量营养元素、pH、有机质等指标与坡位高度呈负相关关系,即坡位越高各指标数值越小,而pH、全P和全K含量的不同坡位梯级间差异达到显著水平;3)春季土壤旱情较为轻微情况下,不同坡位梯级间的含水率差异不大。建议根据不同树种对水肥立地条件要求的差异,当坡面长度在60m以上应分上下坡位安排不同树种,超过100m时应分3个坡位段安排不同树种。
Linear sampling plots were set up with a 14 years old plantation of Castanopsis hystrix in Fubo Experimental Station of Experimental Center of Tropical Forestry,Chinese Academy of Forestry in Guangxi,China.The effects of small scale slope level and microchange on tree growth and soil properties were studied to provide precise techniques for the selection of afforestation site for the cultivation of large diameter timber of valuable tree species.The result showed that:(1)the tree height and DBH decreased with the increase of slope position,and the influence of different slope positions on tree height and DBH was significantly different;(2)Soil nutrient elements,pH and soil organic matter were negatively correlated with slope height.That is,the higher the slope position,the smaller the value of each index,and the difference of pH,total P and K content between different slope levels reached a significant level;(3)Under the mild soil drought in spring,the difference of water content among different slope levels was not significant.It is suggested that according to the difference of site conditions of water and fertilizer for different tree species,different tree species should be arranged in the upper and lower slope positions when the slope length is more than 60m,and different tree species should be arranged in three slope positions when the slope length is more than 100m.