Patterns of Species Richness and Composition in Re‐Created Grassland
Patterns of Species Richness and Composition in Re‐Created Grassland
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重建草原物种丰富度和组成格局
DOI：
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发表时间：
2002
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通讯作者：
William Sluis
中科院分区：
文献类型：
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作者：
William Sluis
许多草原狩猎的成功并没有很好的记录。1975年，在伊利诺斯州芝加哥附近的费米国家加速器实验室开始了一项修复工作，可以评估修复工作以及随着时间的变化。数据介绍了1975年和1990年之间连续几年种植的13个植被和两个残余草原的物种丰富度和组成。使用分层随机设计记录存在的种属。物种丰富度在几个尺度和非度量多维尺度排序被用来评估植被的趋势。物种丰富度下降，随着时间的推移，在所有的尺度检查，总是少在恢复草原比发现在残留的草原。物种组成随着时间的推移而变化，但不是在残留物中发现的组合物的方向。我们对物种丰富度的维持的理解不足以允许在残余草原群落中发现的物种模式的重新创造。
The success of many prairie restorations is not well documented. A restoration begun in 1975 at the Fermi National Accelerator Laboratory near Chicago, Illinois allows assessment of restoration efforts as well as changes through time. Data are presented on species richness and composition for 13 restorations planted in successive years between 1975 and 1990 and two remnant prairies. Presence of species was recorded using a stratified random design. Species richness at several scales and non‐metric multidimensional scaling ordination were used to assess trends in the vegetation. Species richness declined through time at all scales examined and was always less in the restored prairies than that found in the remnant prairies. Species composition changed with time but not in the direction of the composition found in the remnants. Our understanding of the maintenance of species richness is not sufficient to allow the re‐creation of patterns of species found in remnant grassland communities.