林分因子对辽宁章古台樟子松人工林草本植物多样性的影响  

Effects of Stand Factors on Herbaceous Species Diversity in Pinus sylvestris var.mongolica Plantations in Zhanggutai Area,Liaoning Province

作　　者：王景玺 赵浩唱 宋启民 郝玉杰 李清华 贾姊薇 刘小粉[1] Wang Jingxi;Zhao Haochang;Song Qimin;Hao Yujie;Li Qinghua;Jia Ziwei;Liu Xiaofen(Hebei University of Engineering,Handan 056038,Hebei)

机构地区：[1]河北工程大学,河北邯郸056038

出　　处：《防护林科技》2022年第4期17-20,共4页Protection Forest Science and Technology

基　　金：国家重点研发计划项目(2020YFF0305905,2016YFC0500801)。

摘　　要：樟子松(Pinus sylvestris var.mongolica)是我国北方沙地人工林建设中的关键针叶树种,研究樟子松人工林林分因子与草本物种多样性之间的关系有助于维持樟子松人工林生态系统的稳定性。在辽宁章古台地区选取了8个樟子松人工林样地进行了樟子松的每木检尺及林下草本调查,分析了樟子松人工林的林分因子、草本多样性及其相关关系。结果表明:樟子松人工林林下草本层共出现植物20科37属49种,其中以禾本科和藜科最多;8个样地间草本物种丰富度变异系数最大,其次为Shannon指数和Simpson指数,Pielou指数变异系数最小;6个林分因子中平均树高的变异系数最大,死亡率的变异系数最小;平均树高对草本物种多样性影响最大,Pielou均匀度指数与平均树高呈显著负相关(P<0.05)。樟子松人工林林分因子对林下草本多样性存在一定影响,在樟子松人工林生态系统的经营管理时需要统筹考虑系统内乔灌草的整体稳定性。Pinus sylvestris var.mongolica is a key conifer species in the construction of sandy plantation in northern China,and it is benefit for maintaining the stability of the plantation ecosystem of P.sylvestris var.mongolica to study the relationship between the plantation factors of P.sylvestris var.mongolica and the diversity of herbaceous species.In this study,eight P.sylvestris var.mongolica plantations were selected in Zhanggutai area,Liaoning province,to survey each wood ruler and understory herbaceous and analyze the relationships of the stand factors and herbaceous diversity.The results showed that there were 49 species of plants belonging to 37 genera and 20 families in the understory,among which Gramineae and Chenopodiaceae were the most.The variation coefficient of herbaceous species richness among 8 plots was the highest,followed by the Shannon index and the Simpson index,and Pielou index was the lowest.Among the six forest stand factors,the variation coefficient of average tree height was the highest,the variation coefficient of mortality was the lowest.Average tree height had the greatest influence on herbaceous species diversity,and Pielou evenness index was significantly negatively with average tree height(P<0.05).It is concluded that the stand factors have certain influence on the understory herbaceous diversity,and the overall stability of trees,shrubs and grasses in the ecosystem of P.sylvestris var.mongolica plantation should be considered in the management of the ecosystem.

关 键 词：樟子松人工林 草本物种多样性 林分因子 章古台 

分 类 号：S718.54[农业科学—林学] S791.253