退化砂石山地人工林林下植物群落特征与物种多样性  

Community Characteristics and Species Diversities of Understory of Plantation Forests on Degraded Sandstone Mountainous Regions

作　　者：邵水仙 李红丽[2,3] 董智[2,3] 王合云 张晓晓[1] 

机构地区：[1]山东农业大学林学院,山东泰安271018 [2]国家林业局泰山森林生态站,山东泰安271018 [3]山东省土壤侵蚀与生态修复重点实验室,山东泰安271018

出　　处：《水土保持研究》2015年第5期146-151,157,共7页Research of Soil and Water Conservation

基　　金：世界银行贷款山东生态造林项目"山东生态造林项目生态效益监测与评估"[SEAP-JC-(2)]

摘　　要：合适的造林树种能够提高生态系统恢复功能。为研究何种造林树种对退化砂石山地地区植被恢复较好,以山东省退化山地生态造林区为研究区,调查分析了生态造林对草本层植物多样性的影响。结果表明:(1)5种造林树种林分下共有草本植物64种,刺槐林下草本植物最少,且优势种明显;(2)5种人工林下物种多样性指数和生物量的变化趋势均为:坡下部>坡中部>坡上部,经济林高于用材林,混交林高于纯林,针叶林高于阔叶林;(3)5种人工林下物种丰富度、多样性指数以及均匀度指数均随海拔的升高而减小;(4)群落多样性与草本植物地上生物量具有明显的相关关系,且随着多样性的增加,生物量的增幅呈现先增加后减小的趋势。Appropriate afforestation tree species could improve the restoration functions of the ecosystem. In order to figure out which tree species would do better to the vegetation restoration in degradation sandstone mountainous region, we took the ecological afforestation area that was located in the central south of Shandong as study area, investigated and analyzed the impact of ecological afforestation on the diversities of herbaceous vegetation. Results showed that： （1） the number of herbaceous kinds under five afforestation tree species were 64, the locust forest had the minimum kinds and the dominant species had significant advantage; （2） the trend of diversity indexes and biomass of species under five plantation showed that： lower slope〉 middle slope〉 upper slope, diversity indexes and biomass of species in economic forest were higher than timber forest, higher in mixed forest than pure forest, and higher in coniferous forest than broadleaf forest; （3） the species abundance, diversity indexes and homogeneity indexes decreased with the increase of altitude; （4） the correlation between community diversities and above-ground biomass of herbaceous vegetation was significant, and the increase amplitude showed a trend that increased first and then decreased with the increase of biomass.

关 键 词：人工林 植物多样性 丰富度 生物量 

分 类 号：S718.5[农业科学—林学] X176[环境科学与工程—环境科学]