摘要
为了了解抚育间伐对燕山北部山区山杨林物种多样性的影响,对山杨林抚育间伐前后的物种多样性进行了调查和分析,结果表明:抚育后林地草本植物的物种多样性高于未抚育林地,抚育间伐林地草本植物的Patrick指数、Margarlef指数、Simpson指数和Shannon-Wiener指数分别为35.0、6.13、0.89和2.76,未抚育样地分别为29.0、4.90、0.32和1.91;抚育林地灌木的Patrick指数、Margarlef指数、Simpson指数和Shannon-Wiener指数分别为9.0、1.41、0.43和0.98,未抚育林地则分别为8.0、1.48、0.68和1.51,除Patrick指数外,抚育林地的其他多样性指数都低于未抚育林地;抚育间伐使乔木层优势种的优势更为明显。由此得出结论,抚育间伐对山杨林的物种多样性有明显影响,但草本、灌木与乔木对抚育间伐的响应有所不同。
In order to understand the effect of intermediate cutting, on the plant species diversity dynamics of mountain secondary forest in north Hebei Province, instigations and analysis, before and after felling were conducted. And it showed that improvement felling significantly influenced the species diversity of herbaceous plants under forests. The diversity indices of herbaceous plants like Patrick, Margarlef, Simpson, Shannon-Wiener were 35.0,6. 13,0.89 and 2.76,compared with 29.0,4.90,0.32 and 1.91（Not tending）. However, these indices of shrubs are 9.0,1.41,0.43 and 0.98（Tending） ,compared with 8.0,1.48,0.68 and 1.51 （Not tending）. Taken together, diversity indices of shrubs after tending was lower than the woodland without tending, except Patrick（R） For macrophanerophytes, felling will improve the advantage of dominant species, especially for Aspen. In summary, improvement felling had a significant influence on the species diversity of Aspen plantation but the responses of herbaceous plants, shrubs and macrophanerophytes were distinct.
出处
《河北林果研究》
2015年第1期63-67,共5页
Hebei Journal of Forestry and Orchard Research
基金
河北省林业厅项目"木兰林区中幼龄林抚育经营技术及其效果研究"(1217441)
关键词
抚育间伐
物种多样性
丰富度
均匀度
thinning
species diversity
acrophanerophytes were distinct. richness
evenness
