文献类型：期刊文献

中文题名：退化土地植被恢复群落物种多样性与生物量分配格局

英文题名：Species diversity and biomass allocation of vegetation restoration communities on degraded lands

作者：漆良华[1] 彭镇华[1] 张旭东[2] 周金星[2] 蔡春菊[1] 王昭艳[2]

第一作者：漆良华

机构：[1]国际竹藤网络中心;[2]中国林业科学研究院林业研究所国家林业局林木培育重点实验室

年份：2007

卷号：26

期号：11

起止页码：1697-1702

中文期刊名：生态学杂志

外文期刊名：Chinese Journal of Ecology

收录：CSTPCD;;Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：国家"十一五"林业科技支撑资助项目(2006BAD03A16)

语种：中文

中文关键词：植被恢复群落;生物量;物种多样性;退化土地

外文关键词：vegetation restoration community; biomass; species diversity; degraded land.

分类号：Q948.1

摘要：研究了湘西北女儿寨小流域7种典型植被恢复群落生物量的空间分配格局、物种多样性特征及其相互关系。结果表明:1)润楠次生林乔木层生物量最高,马尾松天然林灌木层生物量最大,油桐人工林草本层生物量最高,乔木层最低,毛竹-杉木林灌木层与草本层生物量最小,群落总生物量以马尾松天然林群落最高,荒草灌丛群落最低。2)乔木层物种以润楠次生林最丰富,多样性指数最高,物种分布最均匀;灌木层物种丰富度以毛竹-杉木混交林最高,油桐人工林多样性与均匀度指数最大,优势度最小,荒草灌丛群落的物种丰富度、多样性及均匀度最低;草本层物种丰富度以油桐人工林最高,马尾松天然林最低,杉木人工林草本层多样性指数与均匀度指数最大,润楠次生林优势度最高;群落总体物种丰富度以油桐人工林最高,润楠次生林群落的多样性指数最高,种群分布最均匀,荒草灌丛群落的多样性、均匀度与优势度都最低。3)女儿寨小流域退化土地物种丰富度与群落生物量之间的关系可用"S"曲线较好地描述,双曲线能较好地描述群落多样性指数、群落均匀度指数与生物量之间的关系,而生态优势度与生物量之间为非性线关系。
This paper studied the biomass allocation patterns, species diversity characteristics, and their relationships of seven typical vegetation restoration communities in the Ntierzhai watershed of northwest Hunan Province. The results showed that Machilus pingii secondary forest in its tree layer and Pinus massoniana natural forest in its shrub layer had the highest biomass, while Verniciafordii plantation had the highest biomass in its herbaceous layer but the smallest one in its tree layer. For Phyllostachys eduli - Cunninghamia lanceolata mixed forest, the biomass was the lowest both in shrub and in herbaceous layers. The total biomass was the highest in P. massoniana natural forest, and the lowest in wasteland-shrub community. M. pingii secondary forest had the most abundant species and the highest Shannon-Wiener index and evenness in its tree layer. In shrub layer, P. edulis -C. lanceolata mixed forest had most abundant species, while V. fordii plantation had the highest Shannon-Wiener index, evenness and the smallest ecological dominance. Wasteland-shrub community had the lowest species abundance, Shannon-Wiener index and evenness, and the highest ecological dominance. In herbaceous layer, V. fordii plantation and P. massoniana natural forest had the highest and lowest species abundance, respectively. Shannon-Wiener index and evenness were the highest in C. lanceolata plantation, and ecological dominance was the highest in M. pingii secondary forest. On community level, the species abundance and evenness indexes were the highest in V. fordii plantation and M. pingii secondary forest, respectively, and the species diversity was the lowest in wasteland-shrub community. The relationships between species abundance and community biomass on degraded land could be described well by S curve, and hyperbola was better for describing the relationships between Shannon-Wiener index, evenness, and biomass. There existed a nonlinear relationship between ecological dominance and community biomass.