不同林冠环境下箭竹对亮叶水青冈幼苗更新生长的影响  

Effect of Sinarundinaria hasihursuta on the Updated Growth of Fagus lucida Seedlings under Different Canopy Conditions

作　　者：谢佩耘 高明浪 蒋长红 吴春玉[1] 杨应[1] 司建朋 何跃军[1] 

机构地区：[1]贵州大学林学院,贵阳550025 [2]贵州省宽阔水国家级自然保护区管理局,贵州绥阳563300

出　　处：《重庆师范大学学报（自然科学版）》2016年第6期142-147,共6页Journal of Chongqing Normal University:Natural Science

基　　金：国家环保部生物多样性保护专项(No.kksbdyj02)

摘　　要：采用样方法调查研究了贵州省宽阔水国家级自然保护区林外、林缘、林内等不同林冠环境下的亮叶水青冈(Fagus lucida)幼苗数量、生长性状、箭竹种群数量、物种多样性等指标,并对上述指标进行Pearson相关性分析。结果表明:林缘物种多样性最高,然后依次为林内、林外;从林外到林内,亮叶水青冈幼苗密度、平均高度和平均基径逐渐递减,亮叶水青冈幼苗更多分布在林外和林缘环境,林内环境没有亮叶水青冈幼苗分布;箭竹密度、箭竹平均高度、箭竹平均基径和箭竹平均冠幅从林外到林内逐渐递增;亮叶水青冈幼苗与箭竹生长性状指标负相关。研究表明,宽阔水自然保护区亮叶水青冈幼苗生长维持与更新受到林冠环境和箭竹种群干扰两方面因素的影响。the Pearson correlation analysis of numbers and growth traits of Fagus seedling was reported in this paper,the characteristics of Sinarundinaria hasihursuta species and species diversity in different canopy conditions（outside,margin or inside）in Guizhou Kuankuoshui national nature reserve using the quadrat method.The results indicate that the species diversity was the highest in forest margins,and then followed by inside and outside.From the outside to inside,the density,the average height and the average diameter of Fagus seedlings diminished gradually.Fagus seedlings distributed outside or in the margin of the forest,and there were no Fagus seedlings inside.From the forest outside to inside,the density,the average height,the average diameter and the average crown width of Sinarundinaria increased gradually.The growth traits index of Sinarundinaria and Fagus seedling showed negative correlation.This work shows that the growth and regeneration of Fagus seedling are affected by canopy environment and Sinarundinariainterference.

关 键 词：亮叶水青冈 林冠环境 箭竹 更新 

分 类 号：Q948.122[生物学—植物学]