摘要
为了探索环境因子对红锥生长的影响,以广西红锥(Castanopsis hystrix Miq)人工幼林为研究对象,运用Pearson相关性分析探讨环境因子对红锥幼林生长的影响。结果表明,环境因子对红锥幼林生长有显著的影响,不同环境条件试验点红锥生长速度差异显著(P<0.05)。相关分析显示,年降水量、海拔和年日照时数是影响红锥幼林生长的主要环境因子;红锥幼林胸径生长与年日照时数存在显著正相关(P<0.05)、与海拔和年降水量呈极显著负相关(r<0);红锥幼林树高生长与年日照时数存在极显著正相关(P<0.01)、与海拔和年降水量呈显著负相关(r<0)。研究结果揭示红锥人工林可以通过立地选择来达到丰产目的。
In order to understand the impact of environmental factors on the growth of Castanopsis hystrix young plantations,field surveys were carried out in Central and Southern Guangxi.Pearson correlation analysis was used to detect the correlations among plantation growth indexes and environmental factors.The result showed that environmental factors significantly influenced the growth,and C.hystrix growth differed significantly in four sites with varied environmental conditions.Annual precipitation,altitude and annual sunshine hours were the main influential factors.Diameter at breast height(DBH)positively and significantly correlated to annual sunshine hours(P<0.05),but negatively related to altitude(r<0)and annual precipitation(r<0).Tree height growth positively correlated to annual sunshine hours(P<0.01),but negatively related to altitude and annual precipitation(r<0).The study presented that the Castanopsis hystrix young plantation could achieve high yield through site selection.
作者
彭玉华
谭长强
郑威
申文辉
黄小荣
黄德诚
何峰
莫杨旺
PENG Yuhua;TAN Changqiang;ZHENG Wei;SHEN Wenhui;HUANG Xiaorong;HUANG Decheng;HE Feng;MO Yangwang(Guangxi Forestry Research Institute,Nanning 530002,China;Guangxi Zhaoping Luofu Forest Farm,Zhaoping 546809,China)
出处
《生态科学》
CSCD
2020年第2期90-94,共5页
Ecological Science
基金
国家重点研发计划课题(2016YFD0600606、2017YFD0601101)
广西科学研究与技术开发计划项目(桂科攻1598006-3-8)
中央财政林业科技推广示范项目(【2015】TG17号)。
关键词
红锥
人工幼林
环境因子
相关性分析
Castanopsis hystrix
young plantation
environmental factors
correlation analysis
