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Position: Home > Articles > Plant Species Diversities along Transect Gradients across the Landscape Boundary of Sloping Agroforestry in Areas of Loess Plateau Liaoning Forestry Science and Technology 2007 (4) 12-15

黄土高原坡地林草复合系统景观边界植物多样性特征

作  者:
尤文忠
单  位:
辽宁省林业科学研究院
关键词:
植物多样性;景观边界;林草复合系统;黄土高原
摘  要:
以黄土高原坡地刺槐林—草地复合系统景观边界为研究对象,按一定的生态梯度调查分析了边界植物种的分布特点。结果表明,草地、林地斑块内都有自身的植物种类分布;草地斑块内有较高的植物多样性。在草地斑块内,距林缘8~16m区域为边界植物多样性边缘效应的显著区;林地斑块内β多样性变化剧烈,林缘处的群落相异系数(CD)、Cody指数都最大,共有度指数(CP)最小,CD、Cody与CP成反比。
译  名:
Plant Species Diversities along Transect Gradients across the Landscape Boundary of Sloping Agroforestry in Areas of Loess Plateau
作  者:
YOU Wen-zhong(Liaoning Academy of Forestry Sciences,Shenyang 110032,China)
关键词:
plant species diversities;landscape boundary;forest-grassland systems;loess plateau
摘  要:
In this paper,the distribution characteristics of plant species diversities across the landscape boundary of sloping agroforestry in areas of loess plateau were studied in line with transect gradients.The results showed that there were special plant species either in grasslands or in forestlands.There were higher species diversities in grasslands than in forestlands.The intensive area of edge effect for plant species diversities was 8-16m distance to forest edge in grasslands.β diversities showed intensity in forests.The indices of CD and Cody showed the largest and the indices of CP showed the smallest at forest edge.CD and Cody showed inverse proportion with CP respectively.

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