Surrounding landscape effect on roadside verges

Semi-natural habitats are declining throughout the world, thus the role of small anthropogenic habitats in the preservation of plants is becoming increasingly appreciated. Here we surveyed the orchid flora of roadside verges in five Central European countries (Austria, Hungary, Romania, Slovakia and Slovenia) and tested how the surrounding landscape matrix affects the overall number of species and individuals, and also different functional groups of orchids. We found more than 2000 individuals of 27 orchid species during our surveys. According to our results, the increasing coverage of agricultural and urban areas negatively affect both the number of orchid species and individuals on roadsides. Our study further suggests, that differences in the surrounding habitats affect which species are found on roadsides, since the increasing coverage of grasslands or forested areas around orchid occurrences had a significant positive effect on the number of grassland or forest-dwelling species and...

全球范围内半自然栖息地（semi-natural habitats）正逐渐减少，因此小型人为栖息地（anthropogenic habitats）在植物保护中的作用日益受到重视。本研究调查了中欧五个国家（奥地利、匈牙利、罗马尼亚、斯洛伐克和斯洛文尼亚）路边边缘的兰科植物区系，并检验了周边景观基质（landscape matrix）如何影响兰科植物的物种总数、个体数量以及不同功能群。调查期间，我们共发现27种兰科植物，个体数量超过2000株。研究结果表明，农业和城市区域覆盖度的增加对路边兰科植物的物种数和个体数均产生负面影响。本研究进一步表明，周边栖息地的差异会影响路边出现的兰科植物种类——因为兰科植物分布区周边草地或森林覆盖度的增加，对草地或森林生境兰科物种的数量具有显著的积极影响，并且...