杨树抑螺防病林林下草本植物的物种多样性  

Species Diversity of Herbaceous Plants under Poplar Plantation for Snail Control and Schis-tosomiasis Prevention

作　　者：吴敏[1] 吴立勋[1] 汤玉喜[1] 徐世凤[1] 

机构地区：[1]湖南省林业科学院,湖南长沙410004

出　　处：《湿地科学与管理》2006年第4期20-23,共4页Wetland Science & Management

摘　　要：对滩地杨树抑螺防病林草本植物层的物种组成和多样性进行了8年动态监测。随林龄增加,草本层的物种丰富度降低、个体总数增加;部分喜光性物种被更加耐荫的植物种类所更替,其β多样性增加;原有物种和优势种的保持率分别为56.3%和66.7%,草本层组成保持相对稳定。与造林前期比较,主伐阶段林下草本层α多样性变化不大。The dynamics of species composition and diversity of the herb layer of lakeside poplar plantations at the same site were monitored for eight years. With the increase of plantation age, the species abundance in the herb layer decreased and the total number of individuals increased.The some light preferring species were replaced by more shade tolerant species, and the β diversity iucreased. The species composition of the herb layer was relatively stable, 56.3% and 66.7% were respectively maintained of thc original and the dominant species. At rotation age of the plantations, little change was found in the α diversity in the herb layer compared to that measured before the plantations were establishment.

关 键 词：滩地 抑螺防病林 草本机物层 物种多样性 重要值 

分 类 号：S718.5[农业科学—林学]