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尖峰岭热带山地雨林豆科树木对邻体树种的影响 被引量:2

The Effects of Leguminous Tree on the Neighboring Trees in Tropical Mountain Rainforest in Jianfengling
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摘要 [目的]分析海南典型热带山地雨林分布区域尖峰岭60 hm^(2)大样地内豆科树种对邻体树木的影响,并探讨其可能的影响机制。[方法]利用尖峰岭60 hm^(2)大样地的2012年和2018年2次调查数据,对样地内7种豆科树木的邻体非豆科树木的多度、丰富度和存活率进行比较分析。[结果]2次调查期间,7种豆科树木的邻体多度和丰富度无显著变化。与非豆科树木相比,软荚红豆(Ormosia semicastrata Hance)、猴耳环(Archidendron clypearia(Jack)I.C.Nielsen)和亮叶猴耳环(A.lucidum(Benth.)Nielsen)具有较高的邻体多度和丰富度,而肥荚红豆(O.fordiana Oliv.)、木荚红豆(O.xylocarpa Chun ex L.Chen)、长脐红豆(O.blansae Drake)和薄叶猴耳环(A.utile Chun et How)具有较低的邻体多度和丰富度。软荚红豆、肥荚红豆和猴耳环具有较高的邻体树木的存活率,而长脐红豆、薄叶猴耳环、亮叶猴耳环和木荚红豆具有较低的邻体树木的存活率;7种豆科树木对邻体多度、丰富度的影响与其叶片氮含量和固氮能力无显著相关关系,但邻体距离为4 m的豆科树木邻体存活率与叶片氮含量有显著相关关系。[结论]总体上,不同豆科树木对邻体的影响不尽相同,软荚红豆更倾向于对邻体产生有利作用,薄叶猴耳环和木荚红豆对邻体产生抑制作用,而其它4种豆科树木对邻体的多度、丰富度和存活率的影响不一致。 [Objective]To explore how legumes influence other species in the tropical mountain rainforest,and mechanism related to these influences.[Method]Their neighboring abundance,richness,and survival rates of these seven leguminous trees were calculated and compared with the neighboring non-leguminous trees.[Result]There was no significant differences on the neighboring abundance,richness,and survival rates from 2012 to 2018.Relative neighboring abundance and richness of Ormosia semicastrata,Archidendron clypearia and A.lucidum were higher than those of non-leguminous trees both in 2012 and 2018.Relative neighboring abundance and richness of other four leguminous were lower than those of non-leguminous trees.In terms of neighboring survival rates,O.semicastrata,O.fordiana,and A.clypearia were higher than those of non-leguminous trees,which suggests that O.semicastrata is inclined to have facilitation effects on the neighboring species,while O.xylocarpa and A.utile have negative effects on the neighboring species.Neighboring abundance,richness,and survival rates of seven leguminous trees showed no significant linear correlations with leaf nitrogen contents and nitrogen fixation activities,although it showed significant correlations between the neighboring survival rates and leaf nitrogen contents at the 4 m radius distance from the focal legume trees.[Conclusion]In general,different legumes have various effects on the neighboring species.O.semicastrata is more likely to have facilitative effects on the neighboring trees.A.utile and O.xylocarpa exhibit negative effects on the neighboring trees.The effects of other four leguminous trees on the neighboring trees vary on three neighboring abundance,richness,and survival rate indices.
作者 邓方立 许涵 陈洁 林明献 李意德 DENG Fang-li;XU Han;CHEN Jie;LIN Ming-xian;LI Yi-de(Research Institute of Tropical Forestry,Chinese Academy of Forestry,Guangzhou 510520,Guangdong,China;Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Experimental Station of Research Institute of Tropical Forestry Chinese Academy of Forestry,Ledong 572542,Hainan,China)
出处 《林业科学研究》 CSCD 北大核心 2022年第3期1-8,共8页 Forest Research
基金 中国林业科学研究院中央级公益性科研院所基本科研业务费专项资金(CAFYBB2017ZE001) 国家自然科学基金项目(31670628) 科技基础资源调查专项课题(2019FY101607)。
关键词 热带山地雨林 豆科树木 动态变化 邻体 多度 丰富度 存活率 tropical mountain rainforest leguminous trees community dynamics neighboring trees abundance richness survival rates
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