晋西黄土丘陵沟壑区人工林下草本植物生物多样性研究  

Biodiversity of Herbaceous Species Under Artificial Forests in Hill and Gully Region of Western Shanxi Province

作　　者：高艳鹏[1,2] 赵廷宁[1] 骆汉[1] 

机构地区：[1]北京林业大学水土保持学院水土保持与荒漠化防治教育部重点实验室,北京100083 [2]山东省究州市林业局,山东兖州272100

出　　处：《水土保持通报》2011年第1期103-108,261,共7页Bulletin of Soil and Water Conservation

基　　金：国家“十一五”科技支撑计划“黄土高原丘陵沟壑半干旱区水土保持抗旱造林及径流林业技术试验示范”(2006BAD03A1201)

摘　　要：对黄土丘陵沟壑区不同密度的刺槐林、榆树林、油松林、侧柏林、油松刺槐混交林等林下草本层物种组成及多样性进行了研究,目的是为人工林生态功能恢复评价和植被建设提供理论依据。研究结果表明,该区林下草本植物共有36种,多以阳性植物为主;由于林分树种组成和密度不同,林下草本物种差异较大;林下植被演替大多处于植被演替初级阶段,针阔混交林在物种数量和建种群落上表现最好,其次是油松纯林和刺槐纯林,榆树纯林生境条件最差;无论是丰富度指数还是多样性和均匀度指数,针阔混交林表现最好,其次为刺槐、油松纯林,表现最差的为榆树、侧柏纯林。In order to provide theoretical basis for evaluations on ecological function rehabilitation and vegetation development,the herbaceous structure and diversity of the artificial forests were analyzed in the hill and gully region of the Western Shanxi Province.In this study,vegetation of various densities,including Robinia pseudoacacia,Ulmus pumila,Pinus tabulaeformis,Platycladus orientalis,Pinus tabulaeformis and Robinia pseudoacacia mixed forests,were investigated.Thirty-six herbaceous species,of which most were masculine plants,were identified in the drainage basin.The herbages species differed significantly under various forest plantations.The majority of plant successions under the forest plantations were still in their infant stages.In terms of total number of species and dominant species,the conifer-broadleaf forest exhibited the best biodiversity,followed by Pinus tabulaeformis and Robinia pseudoacacia,whereas Ulmus pumila provided the worst condition for bio-diversification.In addition,conifer-broadleaf forest performed best in regard to species diversity and evenness index,in sequence followed by Robinia pseudoacacia,Pinus tabulaeformis,Ulmus pumila,and Platycladus orientalis.

关 键 词：黄土丘陵沟壑区 人工林 草本植物 多样性 

分 类 号：S725.7[农业科学—林木遗传育种]