摘要
指出了人工林林下草本植物生物量的增加、生物多样性的恢复已经成为经营管理人工林的目标之一。以准格尔旗内砒砂岩区的10年生柠条林、沙棘林、山杏林、油松林、山杏柠条混交林5种类型人工林为研究对象,通过采用样线调查法,结合室内数据分析,对6种人工林的林下草本层植被物种组成和多样性指标进行了研究。结果表明:5种不同类型人工林下共有草本植物35种,其中沙棘林草本层的物种数最多,为23种;山杏林下草本植物物种数最少,为15种;5种不同类型人工林下植被均以羊草为优势种。5种人工林下草本层平均盖度、生物量大小变化规律与物种数一致。山杏柠条混交林、沙棘林的物种丰富度指数、多样性指数都高于其他配置类型的人工林结构。
The objectives of plantation management are to increase biomass and recover biodiversity of herbaceous plant under plantation forests. Through the line transect sampling method,and combined with data analysis,the herbaceous structure and diversity of the artificial forests are analyzed in sandstone areas of Zhungeer. Caragana microphylla （CM）, Hippophae rhamnoides （HR）,Prunus armeniaea （PA）,Pinus tabu- laeformis （PT） and Prunus armeniaca--Caragana microphylla mixed forest （PC） are investigated in this study. Among the identified 35 herbaceous species, only21,23,15,16 and 22 species arre presented in the CM, HR, PA, PT and PC forests respectively. The superior species is the Leymus chinensis. The average cov erage and biomass change rule are consistent of the species number of herbaceous plant. PC and HR are higher than CM,PA,PT in regard to species richness and species diversity.
出处
《绿色科技》
2013年第5期47-50,共4页
Journal of Green Science and Technology
基金
国家林业局948项目"生物缓冲带荒漠化防治技术体系引进"(编号:2010-4-17)资助
