本文主要研究内容
作者黄朗,朱光玉,康立,胡松,刘卓,卢侃（2019）在《湖南栎类天然次生林幼树更新特征及影响因子》一文中研究指出：以湖南典型栎类天然次生林为研究对象,基于51块样地的调查数据,采用k-means聚类分析划分林分类型,研究湖南不同栎类天然次生林幼树更新特征,分析了湖南不同栎类天然次生林幼树更新指标(幼树密度、幼树平均地径、平均高以及平均冠幅)与环境因子、林分因子的相关性,旨在阐明环境因子、林分因子对幼树更新的影响,以期为湖南不同栎类天然次生林的恢复与经营管理提供理论依据。结果表明:(1)利用聚类分析可将研究区内栎类天然次生林划分为5个类型,包括甜槠锥栗混交林(CC)、亮叶水青冈多脉青冈混交林(FC)、石栎樟树混交林(LC)、枹栎甜槠混交林(QC)、青冈栎混交林(CG)。(2)不同类型栎类天然次生林更新幼树优势种分化明显,物种丰富度差异显著(P<0.05)。5种不同栎类次生林幼树密度均未超过500株/hm~2,更新情况较差;幼树数量差异显著(P<0.05),为亮叶水青冈多脉青冈混交林>石栎樟树混交林>青冈栎混交林>枹栎甜槠混交林>甜槠锥栗混交林;生长情况差异显著(P<0.05),为青冈栎混交林>亮叶水青冈多脉青冈混交林>枹栎甜槠混交林>甜槠锥栗混交林>石栎樟树混交林。(3)相关分析结果显示,不同类型次生林幼树更新的主要影响因子存在差异。甜槠锥栗混交林中幼树密度与腐殖质厚度呈显著负相关(P<0.05);幼树平均高与灌木盖度呈显著正相关(P<0.05);幼树平均地径与草本盖度、灌木盖度呈显著正相关(P<0.05)。亮叶水青冈多脉青冈混交林中幼树密度与海拔、腐殖质厚度、枯落物厚度呈显著正相关(P<0.05),与草本盖度呈极显著正相关(P<0.01);幼树平均地径与郁闭度呈显著负相关(P<0.05);幼树平均高、幼树平均冠幅与坡位呈显著正相关(P<0.05)。石栎樟树混交林中幼树密度与坡向、土壤厚度呈显著正相关(P<0.05),其余因子对幼树生长无显著影响。枹栎甜槠混交林中幼树密度与郁闭度、乔木密度呈极显著正相关(P<0.01),与坡位呈显著负相关(P<0.05);幼树平均冠幅与坡度呈显著负相关(P<0.05)。青冈栎混交林中幼树平均地径与土壤厚度呈显著正相关(P<0.05),与乔木密度呈极显著正相关(P<0.01);幼树平均冠幅与灌木盖度呈显著正相关(P<0.05)。
Abstract
yi hu na dian xing li lei tian ran ci sheng lin wei yan jiu dui xiang ,ji yu 51kuai yang de de diao cha shu ju ,cai yong k-meansju lei fen xi hua fen lin fen lei xing ,yan jiu hu na bu tong li lei tian ran ci sheng lin you shu geng xin te zheng ,fen xi le hu na bu tong li lei tian ran ci sheng lin you shu geng xin zhi biao (you shu mi du 、you shu ping jun de jing 、ping jun gao yi ji ping jun guan fu )yu huan jing yin zi 、lin fen yin zi de xiang guan xing ,zhi zai chan ming huan jing yin zi 、lin fen yin zi dui you shu geng xin de ying xiang ,yi ji wei hu na bu tong li lei tian ran ci sheng lin de hui fu yu jing ying guan li di gong li lun yi ju 。jie guo biao ming :(1)li yong ju lei fen xi ke jiang yan jiu ou nei li lei tian ran ci sheng lin hua fen wei 5ge lei xing ,bao gua tian zhu zhui li hun jiao lin (CC)、liang xie shui qing gang duo mai qing gang hun jiao lin (FC)、dan li zhang shu hun jiao lin (LC)、bao li tian zhu hun jiao lin (QC)、qing gang li hun jiao lin (CG)。(2)bu tong lei xing li lei tian ran ci sheng lin geng xin you shu you shi chong fen hua ming xian ,wu chong feng fu du cha yi xian zhe (P<0.05)。5chong bu tong li lei ci sheng lin you shu mi du jun wei chao guo 500zhu /hm~2,geng xin qing kuang jiao cha ;you shu shu liang cha yi xian zhe (P<0.05),wei liang xie shui qing gang duo mai qing gang hun jiao lin >dan li zhang shu hun jiao lin >qing gang li hun jiao lin >bao li tian zhu hun jiao lin >tian zhu zhui li hun jiao lin ;sheng chang qing kuang cha yi xian zhe (P<0.05),wei qing gang li hun jiao lin >liang xie shui qing gang duo mai qing gang hun jiao lin >bao li tian zhu hun jiao lin >tian zhu zhui li hun jiao lin >dan li zhang shu hun jiao lin 。(3)xiang guan fen xi jie guo xian shi ,bu tong lei xing ci sheng lin you shu geng xin de zhu yao ying xiang yin zi cun zai cha yi 。tian zhu zhui li hun jiao lin zhong you shu mi du yu fu shi zhi hou du cheng xian zhe fu xiang guan (P<0.05);you shu ping jun gao yu guan mu gai du cheng xian zhe zheng xiang guan (P<0.05);you shu ping jun de jing yu cao ben gai du 、guan mu gai du cheng xian zhe zheng xiang guan (P<0.05)。liang xie shui qing gang duo mai qing gang hun jiao lin zhong you shu mi du yu hai ba 、fu shi zhi hou du 、ku la wu hou du cheng xian zhe zheng xiang guan (P<0.05),yu cao ben gai du cheng ji xian zhe zheng xiang guan (P<0.01);you shu ping jun de jing yu yu bi du cheng xian zhe fu xiang guan (P<0.05);you shu ping jun gao 、you shu ping jun guan fu yu po wei cheng xian zhe zheng xiang guan (P<0.05)。dan li zhang shu hun jiao lin zhong you shu mi du yu po xiang 、tu rang hou du cheng xian zhe zheng xiang guan (P<0.05),ji yu yin zi dui you shu sheng chang mo xian zhe ying xiang 。bao li tian zhu hun jiao lin zhong you shu mi du yu yu bi du 、qiao mu mi du cheng ji xian zhe zheng xiang guan (P<0.01),yu po wei cheng xian zhe fu xiang guan (P<0.05);you shu ping jun guan fu yu po du cheng xian zhe fu xiang guan (P<0.05)。qing gang li hun jiao lin zhong you shu ping jun de jing yu tu rang hou du cheng xian zhe zheng xiang guan (P<0.05),yu qiao mu mi du cheng ji xian zhe zheng xiang guan (P<0.01);you shu ping jun guan fu yu guan mu gai du cheng xian zhe zheng xiang guan (P<0.05)。
论文参考文献
论文详细介绍
论文作者分别是来自生态学报的黄朗,朱光玉,康立,胡松,刘卓,卢侃，发表于刊物生态学报2019年13期论文，是一篇关于栎类天然次生林论文,更新特征论文,环境因子论文,林分因子论文,生态学报2019年13期论文的文章。本文可供学术参考使用，各位学者可以免费参考阅读下载，文章观点不代表本站观点，资料来自生态学报2019年13期论文网站，若本站收录的文献无意侵犯了您的著作版权，请联系我们删除。
标签：栎类天然次生林论文; 更新特征论文; 环境因子论文; 林分因子论文; 生态学报2019年13期论文;