Short Rotation Coppice (SRC) Plantations Provide Additional Habitats for Vascular Plant Species in Agricultural Mosaic Landscapes
Short Rotation Coppice (SRC) Plantations Provide Additional Habitats for Vascular Plant Species in Agricultural Mosaic Landscapes
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DOI：
10.1007/s12155-012-9195-1
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发表时间：
2012-09-01
影响因子：
3.6
通讯作者：
Weih, Martin
中科院分区：
文献类型：
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作者：
Baum, Sarah;Bolte, Andreas;Weih, Martin
农业景观中生物多样性日益丧失的问题经常在生物能源方面引起辩论，特别是在未来可用于能源生产的非传统作物方面。短轮伐期矮林作为一种有前途的可再生能源和景观要素，其对生物多样性的潜在作用引起了人们的极大兴趣。我们研究了瑞典和德国8个景观（225 km（2））中的植物物种丰富度，其中包括杨柳和白杨SRC人工林（1，600 m（2）），以及景观中物种丰富度（伽马多样性）的相关SRC α多样性。使用矩阵变量，SRC人工林和景观的空间分析进行解释SRC α多样性的γ多样性的贡献。根据镶嵌的概念，多元回归分析揭示了作为一个显着的预测物种丰富度的栖息地类型的数量：较高的栖息地类型的数量，较高的伽马多样性和较低的比例SRC种植园α多样性伽马多样性。SRC种植园α多样性为景观尺度上物种丰富度的6.9%（+/-1.7%SD）。SRC人工林的贡献随着γ多样性的降低而增加。SRC种植园占主导地位的物种适应频繁的干扰和干扰动物的影响比周围的景观。我们的结论是，通过提供不同要求的植物栖息地，SRC α多样性在农村地区的γ多样性有显着的份额，可以促进低生境异质性和低物种池景观的多样性。然而，植物多样性富集主要是由于额外的物种通常存在于干扰和人为环境。
Increasing loss of biodiversity in agricultural landscapes is often debated in the bioenergy context, especially with respect to non-traditional crops that can be grown for energy production in the future. As promising renewable energy source and additional landscape element, the potential role of short rotation coppice (SRC) plantations to biodiversity is of great interest. We studied plant species richness in eight landscapes (225 km(2)) containing willow and poplar SRC plantations (1,600 m(2)) in Sweden and Germany, and the related SRC alpha-diversity to species richness in the landscapes (gamma-diversity). Using matrix variables, spatial analyses of SRC plantations and landscapes were performed to explain the contribution of SRC alpha-diversity to gamma-diversity. In accordance with the mosaic concept, multiple regression analyses revealed number of habitat types as a significant predictor for species richness: the higher the habitat type number, the higher the gamma-diversity and the lower the proportion of SRC plantation alpha-diversity to gamma-diversity. SRC plantation alpha-diversity was 6.9 % (+/- 1.7 % SD) of species richness on the landscape scale. The contribution of SRC plantations increased with decreasing gamma-diversity. SRC plantations were dominated more by species adapted to frequent disturbances and anthropo-zoogenic impacts than surrounding landscapes. We conclude that by providing habitats for plants with different requirements, SRC alpha-diversity has a significant share on gamma-diversity in rural areas and can promote diversity in landscapes with low habitat heterogeneity and low species pools. However, plant diversity enrichment is mainly due to additional species typically present in disturbed and anthropogenic environments.