摘要
江西红壤丘陵区湿地松人工林经过10多年的自然更新,林下植被恢复迅速,仅灌木物种就达69种。先采用重要值分析判别各物种的地位和作用,然后采用2×2联列表、应用方差分析、AC指数、PC指数和2χ统计量检验,分别对湿地松林下灌木总体相关性和主要物种间联结性进行了定量测定。结果表明:目前湿地松林下灌木间总体上呈显著的正相关,但大多数种对联结性不显著,而独立分布,这说明湿地松灌层群落正处在一个相对稳定的,但又仍未完全超越物种随机组合的初级阶段。
There are 69 woody species occurring in the shrub layer in the Slash pine （P/nus elliotii Engelman） plantation in Jiangxi Province after more than 10 years natural succession. The status and function of these species were studied by important value （IV）, and the interspecific associations of 22 main woody species in the shrub layer were also analyzed by a series of approaches including variance analysis, ^-test, association coefficient（AC） and percentage co-occurence （PC） .The results indicated that the connections among these plant species showed a positive correlation, but the interspecific associations between most species pairs were not significant and their distributions tended to be independent, which indicated that the shrub community of Slash pine plantation is in a primary stage of development.
出处
《江西农业大学学报》
CAS
CSCD
北大核心
2007年第5期773-777,共5页
Acta Agriculturae Universitatis Jiangxiensis
基金
国家林业局重点课题资助项目(2001-22)
关键词
湿地松林
林下灌木
物种组成
种间联结
Pinus elliotii plantations
shrub layer
, species composition
interspecific association
