[1]吴海平,孙清琳,张彦君,等. 不同密度油松人工林群落特征与物种多样性耦合关系[J].西北林学院学报,2022,37(5):1-8.[doi:10.3969/j.issn.1001-7461.2022.05.01]
　WU Hai-ping,SUN Qing-lin,ZHANG Yan-jun,et al. Coupling Relationship Between Community Characteristics and Species Diversity of Pinus tabuliformis Plantations with Different Densities[J].JOURNAL OF NORTHWEST FORESTRY UNIVERSITY,2022,37(5):1-8.[doi:10.3969/j.issn.1001-7461.2022.05.01]
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 不同密度油松人工林群落特征与物种多样性耦合关系()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第37卷
期数:
2022年第5期
页码:
1-8
栏目:
出版日期:
2022-09-30

文章信息/Info

Title:
 Coupling Relationship Between Community Characteristics and Species Diversity of Pinus tabuliformis Plantations with Different Densities
文章编号:
1001-7461(2022)05-0001-08
作者:
 吴海平1; 孙清琳1; 张彦君2; 蔡茂1; 赵鹏祥2; 李卫忠2; 王博恒1; 2*
 （1.国家林业和草原局 华东调查规划设计院，浙江 杭州 310019； 2.西北农林科技大学 林学院，陕西 杨陵 712100）
Author(s):
 WU Hai-ping1; SUN Qing-lin1; ZHANG Yan-jun2; CAI Mao2; ZHAO Peng-xiang2; LI Wei-zhong2; WANG Bo-heng1; 2*
 （1.Eastern China Forest Inventory and Planning Institute of National Forestry and Grassland Administration,Hangzhou 310019,Zhejiang,China; 2.Northwest A&F University,Yangling 712100,Shaanxi,China）
关键词:
 ; 群落特征; 物种多样性; 人工林; 油松; 耦合关系
Keywords:
 ; community characteristics;  species diversity;  plantation;  Pinus tabuliformis;  coupling relationship
分类号:
S791.254
DOI:
10.3969/j.issn.1001-7461.2022.05.01
文献标志码:
A
摘要:
 以黄土高原区油松人工林为研究对象，对比3种不同密度的油松人工林群落特征和物种多样性差异，构建两者间耦合关系模型，探讨不同密度油松人工林经营策略。结果表明：1）不同密度油松人工林群落特征具有差异，高密度（3 400~4 600株·hm-2）林分的角尺度显著大于中密度（2 200~2 800株·hm-2）、低密度（1 400~2 100株·hm-2）林分；低密度林分的混交度、平均胸径和冠幅显著高于中、高密度林分。2）不同密度林分的乔木、灌木和草本物种多样性指数均与其自身显著正相关；低密度林分中，乔木层和灌木层多样性指数、灌木层和草本层多样性指数显著负相关。3）不同植物群落具有不同特征，中、高密度林分物种多样性对群落贡献较高，低密度林分群落植物空间分布合理，生长状况良好。4)通过改善植物群落的空间分布结构和生长状况，可以提升中密度林分群落中乔木、灌木和草本的物种多样性，而在高、低密度的林分中，则需采取其他经营策略。
Abstract:
 Exploring the coupling relationship between community characteristics and species diversity is important to the management of plantation ecosystem,and it is also the theoretical basis of the management improvement of plantations.Taking Pinus tabuliformis plantations in the Loess Plateau as the research objects,the community characteristics and species diversity of the plantations with three different densities were compared,the coupling relationship model between the two was constructed,and the management strategies of P.tabuliformis plantations with different densities were discussed.The results were as follows.1) The community characteristics of P.tabuliformis plantations with different densities were different.The uniform Angle index of high-density plantation (3 400-4 600 trees·hm-2) was higher than those of medium-density (2 200-2 800 trees·hm-2) and low-density (1 400-2 100 trees·hm-2) plantations.The mingling index,mean DBH and crown width of low-density plantations were significantly higher than those of medium and high-density forests.2) The species diversity indices of the trees,shrubs and herbs species of the plantations with different densities were significantly and positively correlated with themselves.In low-density stands,the tree layer’s species diversity index was negatively correlated with shrub layer’s,while the shrub layer’s was negatively correlated with herbs layer’s.3) Different plant communities had different characteristics.Medium and high-density plantations showed a great plant species richness,while low-density plantations showed a great spatial distribution and growth condition.4) In medium-density plantations,species diversity of the trees,shrubs and herbs could be improved by rebuilding the spatial structure and growth condition of plant communities,while in high and low-density plantations,some other management strategies should be adopted.

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备注/Memo

备注/Memo:
 收稿日期：2022-03-15修回日期：2022-07-22
基金项目：国家重点研发计划课题（2016YFD0600203）；陕西省林业科学研究重大项目（SHLY-2018-02）。
第一作者：吴海平，高级工程师。研究方向：森林可持续经营。E-mail:WHP42@126.com
*通信作者：王博恒，博士。研究方向：林业调查与森林经营规划。E-mail：vancywang@126.com
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