湖北恩施桢楠林群落组成与结构
Community Composition and Structure of Phoebe zhennan Forest in Enshi, Hubei Province
-
摘要: 利用群落生态学方法对恩施桢楠林群落组成与结构进行调查分析。结果表明:恩施桢楠林群落物种丰富,共有维管束植物97科229属332种,含有单种植物的属较多,优势科主要有蔷薇科、禾本科、豆科、百合科。乔木层(DBH≥2.5 cm)优势树种明显,从个体数、平均胸径、胸高断面积和重要值分析来看,桢楠(Phoebe zhennan)在群落中占绝对优势地位。群落区系类型以热带成分较多,93属是热带分布,90属是温带分布。群落成层现象明显,可划分为乔木层、灌木层和草本层。样地内所有木本植物的径级分布呈峰型,表明群落正常生长;从主要树种的径级结构来看,桢楠、枫香(Liquidambar formosana)和杉木(Cunninghamia lanceolata)种群均为增长型或稳定型种群,群落更新良好,正渐趋稳定。灌木层植物种类最丰富,草本层次之,物种多样性大小顺序依次为灌木层>草本层>乔木层。Abstract: The vegetation of Phoebe zhennan forest is protected very well in Enshi of Hubei Province. A survey of community composition and structure of Phoebe zhennan in Enshi was conducted through survey sampling. The results show that there are 332 species of vascular plants belonging to 229 genera of 97 families in the P. zhennan forest. Many genera contain only one species. The dominant families include Rosaceae, Gramineae, Leguminosae, Liliaceae, etc. By the statistics of species abundance, basal area, mean DBH(diameter at breast height)≥2.5 cm, and important value, it shows that the pioneer species P. zhennan is the dominant species in arbor layer. The floristic characteristics indicate that the tropical elements are more than temperate elements. The proportion of the pantropic type is the greatest, the number of the tropic elements are more than temperate ones. The community could be divided into three layers including arbors, shrubs and herbs. The structure of DBH size-class of all species in the plot generally appears increase, which indicates normal community growth. The size-class structure of main species showed a growing or stable type. The shrub layer is relatively abundant in species, the diversity from high to low follows the order of shrub, herb and arbor.
-
Key words:
- Phoebe zhennan forest
- / species composition
- / size-class structure
- / species diversity
- / Enshi, Hubei
-
[1] 谭 鹏,李敏华.中国特有树种--桢楠[J].中国木材,2011(3):16-17 [2] 中国树木志编辑委员会.中国树木志(第1卷)[M].北京:中国林业出社,1983 [3] 赵 冀.楠木古今浅谈[J].四川林业科技,1980,1(3):87-88 [4] 湖北森林编辑委员会.湖北森林[M].北京:中国林业出版社,1991 [5] 珍稀树种开发利用课题组.珍稀树种研究论文集.南京:南京林业大学树木组,1992 [6] 胡婧楠,刘桂华.2种楠木幼树光合生理特性的初步研究[J].安徽农业大学学报,2010,37(3):541-546 [7] 李铁华,彭险峰,喻勋林,等.楠木种子休眠与萌发特性的研究[J].中国种业,2008(1):43-45 [8] 马明东,江 洪,杨俊义.四川盆地西缘楠木人工林分生物量的研究[J].四川林业科技,1989,40(3):6-l4 [9] 蔡春轶,黄建辉.四川都江堰地区桢楠林、杉木林和常绿阔叶林土壤N库的季节变化[J].生态学报,2006,26(8):2540-2548 [10] 张 炜,江 波,蒋 晔,等.四川省桢楠天然群体种子表型多样性的初步研究[J].四川林业科技,2009,30(6):75-78 [11] 叶学齐.鄂西南山原区域的自然地理特征及其合理利用方向[J].华中师范大学学报:自然科学版,1989,23(1):103-109 [12] 谭传凤,张安录.鄂西南山地垂直气候生境地带[J].生态农业研究,1993,1(3):27-34 [13] 陈建国,田大伦,闫文德,等.鄂西南区域土壤有机碳储量、密度及其影响因子[J].中南林业科技大学学报,2011,31(5):57-62 [14] 马克平,黄建辉,于顺利,等.北京东灵山地区植物群落多样性的研究II.丰富度、均匀度和物种多样性指数[J].生态学报,1995,15(3):268-277 [15] 薛建辉.森林生态学[M].北京:中国林业出版社,2006 [16] 吴大荣,朱政德.福建省罗卜岩自然保护区闽楠种群结构和空间分布格局初步研究[J].林业科学,2003,29(1):23-30 [17] Qu Z X,Wen Z W,Zhu K G. An analytical study of the forest of the spirit valley,Nanking[J]. Acta Botanica Sinica,1952,2(1):18-45 [18] 刘克旺,石道良,杨旭红.湖南绥宁县神坡山穗花杉群落特征初步研究[J]. 武汉植物学研究,1999,17(2):137-145 [19] 张金屯.植被数量生态学方法[M].北京:中国科学技术出版社,1995 [20] Hubbell S P, Foster R B. Commonness and rarity in a neotropical forest:implications for tropical tree conservation[M]// Soule M E. Conservation Biology:The Science of Scarcity and Diversity. Sinauer Assoc Inc, Massachusetts,1986,205-231 [21] 郝占庆,李步杭,张 健,等.长白山阔叶红松林样地(CBS):群落组成与结构[J].植物生态学报,2008,32(2):238-250 [22] 吴征镒.中国种子植物属的分布区类型[J].云南植物研究,1991(增刊):1-139 [23] 杨一川,庄 平,黎系荣.峨眉山峨眉栲、华木荷群落研究[J].植物生态学报,1994,18(2):105-120 [24] 张志祥,刘 鹏,刘春生,等.浙江九龙山南方铁杉(Tsuga tchekiangensis)群落结构及优势种群更新类型[J].生态学报,2008,28(9):4547-4558 [25] 马克平.试论生物多样性的概念[J].生物多样性,1993,1(1):20-22 [26] 郭其强,张文辉,何景峰,等.黄龙山不同白桦林群落结构特征研究[J].西北植物学报,2007,27(1):132-138 [27] 贺金生,陈伟烈.陆地植物群落物种多样性的梯度变化特征[J].生态学报,1997,17(1):91-99 [28] 吴小林,张 玮,李永胜,等.浙江省3种楠木主要天然种群的群落结构和物种多样性[J].浙江林业科技,2011,31(2):25-31 [29] 程清明,方 腾,蒋志成.开化县官台闽楠群落特征调查研究[J].浙江林业科技,2007,27(1):38-40 [30] 邹秀红.福建永春闽楠天然林植物区系和物种多样性研究[J].亚热带植物科学,2002,31(2):23-26 -
点击查看大图
计量
- 文章访问数: 3322
- HTML全文浏览量: 273
- PDF下载量: 1498
- 被引次数: 0
下载:
