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当前位置: 首页 > 文章 > 陕西省淳化县人工刺槐林林分结构及林下植物多样性研究 水土保持通报 2011,31 (3) 194-201
Position: Home > Articles > Forest Structure and Diversity of Robinia Pseudoacacia L. Plantations in Chunhua County of Shaanxi Province Bulletin of Soil and Water Conservation 2011,31 (3) 194-201

陕西省淳化县人工刺槐林林分结构及林下植物多样性研究

作  者：
杨晓毅;李凯荣;李苗;刘雪凤
单  位：
西北农林科技大学资源环境学院;西北农林科技大学林学院西北农林科技大学资源环境学院
关键词：
人工刺槐林;多样性;径阶分布;树高分布
摘  要：
采用标准样地调查的方法,分析了林地的总体多样性、林下植物群落多样性及物种多样性。研究了陕西省淳化县刺槐林径阶、平均树高同密度的关系。结果表明,人工刺槐林在自然恢复下,共发现灌木12种,分属于7科10属;草本46种,分属于17科37属。林下植物种类丰富度和多样性指数也增加,灌木层、草本层分层较为明显,草本层在植物多样性和重要值等指数上显示高于灌木层。研究表明,1 000～1 500株/hm2的中等密度刺槐林,坡度小于35°的斜缓坡、阳坡、坡下部更有利于林下植物生长。林分径阶随林龄的增长而增大,随密度的增大而减小。林分密度小于1 500株/hm2时,平均树高随密度的增大而增高。
译  名：
Forest Structure and Diversity of Robinia Pseudoacacia L. Plantations in Chunhua County of Shaanxi Province
作  者：
YANG Xiao-yi1,LI Kai-rong2,LI Miao1,LIU Xue-feng1(1.College of Forestry,Northwest A &F University,Yangling,Shaanxi 712100;2.College of Resources and Environment,Northwest A &F University,Yangling,Shaanxi 712100,China)
关键词：
Robinia pseudoacacia L.;diversity;breast diameter distribution;tree height distribution
摘  要：
On the base of field suvey in standard plots,the overall diversity,plant community diversity and species diversity index were analyzed for Robinia pseudoacacia L.plantations in Chunhua County of Shaanxi Province on the Loess Plateau.The relationship between path rank,average tree height and density were also explored.Results show that after several years of natural recovery in Robinia pseudoacacia L.plantations,12 shrub species belonging to 10 genera of 7 families,and 46 species in 37 genera of 17 families in herbaceous layers were found.The plant species richness and the diversity index increased significantly.The stratification between shrub and herbaceous layers under trees was more obvious.In contrast,the plant diversity and the important values in the herbaceous layer were higher than those of the shrub layer.Understory plants grew significantly better on the sunny and downhill slopes with angles less than 35 degree and medium density of 1 000～1 500 tree/hm2.The tree diameters decreased accordingly with the increase of forest density.When density was less than 1 500 tree/hm2,the average height was significantly increased with the average density.

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