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首页> 外文期刊>Acta Societatis Botanicorum Poloniae >Spatial structure of grassland patches in Poland: implications for nature conservation
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Spatial structure of grassland patches in Poland: implications for nature conservation

机译：波兰草原斑块的空间结构：对自然保护的意义

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Grasslands provide wide range of ecosystem services, however, their area and quality are still diminishing in Europe. Nowadays, they often create isolated patches inside “sea” of other habitats. We have examined basic structural landscape metrics of grasslands in Poland using CORINE land use database. Characteristics for both all individual patches as well as average values for 10 × 10-km grid covering Poland were examined. We also assessed the percentage of grasslands within protected areas and ecological corridors. We found that in Poland rather small patches (0.3–1 km2) dominate, usually located 200–500 m away from each other. The grasslands had clumped distribution, thus in Poland exist large areas where grasslands patches are separated kilometers from each other. Almost all indices calculated for 10 × 10-km2 were correlated, i.e., in regions with high percentage of grasslands, the patches were large, more numerous, placed close to each other, and had more irregular shapes. Our results revealed that the percentage of grasslands within protected areas and ecological corridors did not differ from the average value for Poland. On the other hand, forests were significantly over-represented in protected areas and ecological corridors. These findings suggest that there is no planned scheme for grassland protection at the landscape scale in Poland. Development the scheme is urgent and needs high-quality data regarding distribution of seminatural grasslands patches. In practice, nature conservationists and managers should consider spatial processes in their plans in order to maintain grassland biodiversity.
机译：草原提供了广泛的生态系统服务，但是在欧洲，草原的面积和质量仍在下降。如今，它们经常在其他栖息地的“海洋”内创建孤立的斑块。我们使用CORINE土地利用数据库检查了波兰草原的基本结构景观指标。检查了所有单独斑块的特征以及覆盖波兰的10×10 km网格的平均值。我们还评估了保护区和生态走廊内草地的百分比。我们发现，在波兰，较小的斑块（0.3-1 km2）占主导地位，通常彼此之间的距离为200-500 m。草原成簇分布，因此在波兰，大片草原之间相距几公里。几乎所有以10×10 km2计算的指标都具有相关性，即在草原比例高的区域中，斑块较大，数量更多，彼此靠近且形状更不规则。我们的结果表明，保护区和生态走廊内草地的百分比与波兰的平均值没有差异。另一方面，森林在保护区和生态走廊中的比例过高。这些发现表明，波兰没有在景观规模上进行草地保护的计划方案。该计划的开发很紧迫，并且需要有关半自然草地斑块分布的高质量数据。实际上，自然保护主义者和管理者应在其计划中考虑空间过程，以维护草地的生物多样性。

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