摘要
对4种主要次生林类型的植物物种组成及其多样性进行调查和分析。结果表明：1）通过2个生长季的调查，共采集植物378种，分别隶属于78科、215属；2005年设置的37块样地中，共包括植物物种183种，分别隶属于58科、123属，其中乔木34种、灌木33种、草本116种；除主要乔木树种（如蒙古栎、枫桦、胡桃楸、水曲柳和花曲柳）外，常见的植物有色木槭、假色槭、毛脉卫矛、山楂叶悬钩子、荨麻叶龙头草、白花碎米荠、宽叶苔草、粗茎鳞毛蕨和掌叶铁线蕨等；2）对辽东山区次生林生态系统现有植物群落而言，物种数占植物物种总数80％的最小取样面积为251m^2，即约为16m×16m；物种数占植物物种总数90％的最小取样面积为423m^2，即约为20m×20m；3）仅从Shannon-Wiener多样性指数来看，该地区次生林生态系统总体植物多样性水平较高，指数值为3．200～3．600，特别是杂木林高达3．567；但就各层次多样性而言，不同次生林类型差异较大，在多数次生林类型中乔木层多样性水平不高，且均小于灌、草层多样性。
Species composition and diversity of the 4 main secondary forest types were studied in this paper. The results showed： 1） A total of 378 plant species from 215 genera in 78 families were found inthis region during the observations in two growing seasons. In the 37 sample plots that were set up in the second growing season, we found 183 plant species belonging to 123 genera in 58 families, among which, 34 arbor specieses, 33 shrub specieses and 116 herb specieses. Besides several common tree species, such as Quercus mongolica, Betula costata, Juglans mandshurica, Fraxinus mandshurica and Fraxinus rhynchophylla, Acer mono, Acer pseudo-sieboldianum, Euonymus alatus var. pubescens, Rubus crataegifolius, Meehania urticifolia, Cardamine leucantha, Carex siderosticta, Dryopteris crassirhizoma and Adiantum pedatum were the most frequently appeared species in the secondary forests. 2） To the plant communities of secondary forests in the montane regions of eastern Liaoning Province, China, the minimum sampling area for diversity investigation was 16 m × 16 m and 20 m × 20 m which contained 80% and 90% of all the plant species, respectively. 3） The values of Shannon-Weiner index in this region were between 3.200 and 3.600. The maximum value appeared in the mixed broad-leaved forests with Shannon-Wiener index of 3. 567. Diversity of arbor layer, shrub layer and herb layer among the four major forest types exhibited different patterns, i.e., the diversity of arbor layer was lower than those of shrub layer and herb layer in most types.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2007年第10期1-7,共7页
Scientia Silvae Sinicae
基金
中国科学院百人计划项目
国家自然科学基金资助项目(30671669)
关键词
辽东山区
次生林
物种组成
多样性
montane regions of eastern Liaoning Province
secondary forests
species composition
diversity
