山西农业大学学报（自然科学版）2019，Vol.39Issue(1)：3852-3858,7.DOI:10.13842／j.cnki.issn1671‐8151.201810035
油松天然次生林林下植物多样性对林分密度的响应研究
Responses of understory plant diversity to stand density in natural secondary forests of Pinus tabulae‐f ormis
摘要
Abstract
[Objective] Stand density has a significant effect on the composition and species diversity of plants in the un‐derstory .Adjusting forest density is the main way of forest ecosystem management .Response model has practical sig‐nificance in determining the technical indexes of forest management in a certain forest type of specific area .Present study was aimed to construct a response model with the change of stand composition and species diversity resulting from changes of stand density .[M ethods] T he research material of this study was the natural secondary forest of Pi‐nus tabulaeform is in Xiaowen forestry farm of Guandi Mountain .A typical sample survey based on density series was conducted and a statistical analysis of plant composition and species diversity was performed .[Results ] T he results showed significant differences in response of plant composition and species diversity to stand density .Herb and shrub richness ,Simpson and Simpson‐based Pielou evenness index were increased with the decrease of forest density .Shan‐non‐wiener ,Shannon‐wiener based Pielou ,and Alatalo evenness index were enhanced at beginning and then decreased with the decrease of forest density .[Conclusion] Reasonable reproduction strategy should be adopted to regulate exces‐sive stand density of natural secondary forests to a moderate range ,and to accelerate stand regeneration and increase species diversity and foster stable forest ecosystems .Stand density between 850～1 000 trees·hm －2 can maintain high species diversity ,w hich is the optimum density range for natural secondary forest of Pinus tabulaeform is in Guandi Mountain .关键词
林分密度/林下植被/物种组成/物种多样性/油松/关帝山Key words
Stand density/Understory vegetation/species composition/species diversity/ Pinus tabulaeform is/Guandi mountain引用本文复制引用
Tan Zhijie,Dong Wei,Liu Tairui,Zhang Yunxiang,Guo Jinping,Wu Yanming..油松天然次生林林下植物多样性对林分密度的响应研究[J].山西农业大学学报（自然科学版）,2019,39(1):3852-3858,7.基金项目
山西省重点研发计划专项(2018LYCX32) （2018LYCX32）
国家林业行业专项(201404417) （201404417）
山西省攻关项目(20140311014‐3) （20140311014‐3）
