Vegetation dynamics of the forest edge: trends in space and successional time
Vegetation dynamics of the forest edge: trends in space and successional time
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DOI：
10.2307/2261391
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发表时间：
1994-03
影响因子：
5.5
通讯作者：
G. Matlack
中科院分区：
文献类型：
--
作者：
G. Matlack
在美国宾夕法尼亚州东南部和特拉华州北部的14个地点，森林草本植物、灌木和树苗在距离人类产生的边缘五个距离处进行了普查。森林边缘在方向和郁闭度上各不相同，可以按坡向和演替阶段比较植被。在部分地点的植被采样点测量了土壤深度和酸碱度；小气候数据来自一项平行研究。在整个物种组成和15个个体物种的分布上，都观察到了边缘相关格局。在最近形成的森林边缘，物种丰富度与陡峭的气候梯度相关。虽然大多数以边缘为导向的物种都聚集在距离边缘5米的地方，但一些物种在距离最远40米时始终达到峰值密度，这是调查到的最大距离(≤).
Forest herbs, shrubs, and tree seedlings were censused at five distances from human-generated edges at 14 sites in south-eastern Pennsylvania and northern Delaware, USA. Forest edges varied in orientation and in the degree of canopy closure, allowing comparisons of vegetation by aspect and successional stage. Soil depth and pH were measured at vegetation sampling points at a subset of sites; microclimate data were available from a parallel study. Edge-related pattern was observed in overall species composition, and in distributions of 15 individual species. At recently created forest edges, species abundances were correlated with steep climatic gradients. Although most edge-orientated species were clustered ≤ 5 m from the edge, some species consistently reached peak densities at distances up to 40 m, the greatest distance surveyed (...)