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陕西子午岭森林植物群落种间联结性
引用本文:王乃江,张文辉,陆元昌,范少辉,王勇.陕西子午岭森林植物群落种间联结性[J].生态学报,2010,30(1):67-78.
作者姓名:王乃江  张文辉  陆元昌  范少辉  王勇
作者单位:1. 西北农林科技大学林学院,两部环境与生态教育部重点实验室,陕西杨凌,712100
2. 中国林业科学研究院,北京,100091
3. 西北农林科技大学林学院,两部环境与生态教育部重点实验室,陕西杨凌,712100;中国林业科学研究院,北京,100091
4. 阿拉巴马农工大学自然资源与环境科学系,美国,35762
基金项目:国家“十一五”科技支撑计划项目(2006BAD09B03-03);陕西省自然科学基金资助项目 (2005C120);西北农林科技大学科研专项资助项目;中国科学院西部行动计划资助项目(KZCX2-XB2-05)
摘    要:用方差比率(VR)和基于2×2联列表,通过x2统计量检验、共同出现百分率(PC)、联结系数(AC)的方法,对地处黄土高原中部的陕西子午岭森林植物群落乔木层12个树种、灌木层20个树种和草本层21种植物的种间联结性进行了研究。结果表明,乔木层、灌木层总体种间关联性表现为显著正关联,草本层为不显著正关联。乔木层主要种群表现出相互独立的特点,但辽东栎(Quercus wutaishanica)和油松(Pinus tabulaefomis),油松和茶条槭(Acer ginnal),茶条槭和白桦(Betula platyphylla),杜梨(Pyrus betulaefolia)与辽东栎、油松、茶条槭、白桦等7个种对存在一定正关联。正关联的种对数是副关联的2倍。灌木层南蛇藤(Celastrus orbiculatus)和悬钩子(Rubus corchorifolius)、水栒子(Cotoneaster maltiflorus)和红瑞木(Cornus alba)、多花胡枝子(Lespedeza floribund)和华北丁香(Syringa oblate)之间存在极显著的正联结;华北绣线菊(Spiraea fritschiana)和野葡萄(Vitisamurensis)、冻绿(Rhamuns utilis)和栓翅卫矛(Euonymus phellomanes)、南蛇藤和野葡萄、南蛇藤和葱皮忍冬(Lonicera ferdinandii)之间存在显著的正联结。正关联和副关联种对数相当。草本层种间联结表现出较为松散的特征,无关联的种对数多达21个。正副关联的种对数约为3∶2。最好将多个指标配合使用能更好地说明种间联结程度。

关 键 词:种间联结  子午岭  黄土高原  天然次生林
收稿时间:8/9/2008 12:00:00 AM
修稿时间:2009/11/16 0:00:00

Interspecific association among the plants communities in the forest at Ziwuling Area in Shaanxi Province
WANG Naijiang,ZHANG Wenhui,LU Yuanchang,FAN Shaohui,WANG Yong.Interspecific association among the plants communities in the forest at Ziwuling Area in Shaanxi Province[J].Acta Ecologica Sinica,2010,30(1):67-78.
Authors:WANG Naijiang  ZHANG Wenhui  LU Yuanchang  FAN Shaohui  WANG Yong
Affiliation:WANG Naijiang1,ZHANG Wenhui1,LU Yuanchang2,FAN Shaohui3,WANG Yong4 1 College of forestry,Northwest A&F University,Key Laboratory of Environment , Ecology of Education Ministry in West China,Yangling,Shaanxi 712100,China2 Research Institute of Forestry,CAF,Beijing 100091,China3 International Centre of Bamboo , Rattan,Beijing 100102,China4 Department of Nature Resources , Environmental Science,Alabama A&M University,Normal,Alabama,USA 35762
Abstract:We examined interspecific association of 12 tree species, 20 shrub species, and 21 herbacious species of the natural secondary forests at Ziwuling Bbased on the use of variance ratio ( VR), x~2 test and 2×2 contingency table, the overall interspecific association of the main 12 tree species, 20 shrub species and 21 herb species of natural secondary forest at Ziwuling were studied. There were positive associations among tree species and among shrub species. No relationship was detected among the herb species. The result showed that the interspecific association in tree layer or shrub layer were significantly positive while not significantly positive in herb layer. Among the tree species, seven pairs of species including The primary species in the tree layer were Independent from each other, whereas seven pairs of species like Quercus wutaishanica and Pinus tabulaefomis, P. tabulaefomis and Acer ginnal, A. ginnal and Betula platyphylla, Pyrus betulaefolia and Q. wutaishanica, P. tabulaefomis, A. ginnal, and B. platyphylla showedhad positive assoeiations; the number of species pairs having of positive association was twice two times that showing of negative association, in number.In shrub laver, three pairs of species includingsuch as Celastrus orbiculatus and Rubus corchorifolius.,Cotoneaster matiflorus and Comus alba,and Lespedeza floribunda and Syringa oblate had highlyextremely significantly positive association;,and four pairs of shrub species including like Spiraea frischiana and Vitis amurensis,Rhamuns utilis and Euonymus phellomanes,Corbiculatus and Vitis amurensis,and C.orbiculatus and Lonicera ferdinandii had were in significantly positive asociation.The number of pairs of species having The species pairs of positive association were approximately equivalent to taose having of that of negative association.The associations among In herbaceous species were weak and inconsistant.layer,the interapecific association showed the dispersive feature,Twenty-one21 species pairs had nowithout interspecific associations,and the The ratio of species pairs of having positive association to species pairs of having negative association was 3:2.The The several indicators applied together were proved proven to be more rational for describing the interspecific asociation.
Keywords:interspecific association  Ziwuling  the Loess Plateau  natural secondary forest
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