Teagasc, Department of Soils, Environment and Land Use, Johnstown Castle Research Centre, Wexford, Ireland.
CREAF, 08193, Cerdanyola Del Vallès, Spain.
Ambio. 2021 Feb;50(2):346-359. doi: 10.1007/s13280-020-01344-6. Epub 2020 May 29.
Concerns over the loss of biodiversity and ecosystem services in farmland have prompted the development of agri-environment policy measures aimed at reducing farming pressure and maintaining semi-natural habitats in farmed landscapes. However, further knowledge is needed to guarantee successful agri-environment measures implementation. The current study assessed the quantity and the quality of semi-natural habitats in farms across a gradient of farming intensities in two contrasting regions in Ireland. Policy protection seemed fundamental for semi-natural habitats preservation. Habitats not protected by agricultural policy relied on extensive farming and are in danger of disappearing if they are intensified or abandoned. Due to the lack of policy incentives for habitat quality, no correlations were found between farming intensity and share of semi-natural habitats with habitat quality. Therefore, extensive farming and retention of habitats alone may not reverse the decline of farmland quality and biodiverisity and, thus, measures incentivising the environmental quality may be more successful.
对农田生物多样性和生态系统服务丧失的担忧促使人们制定农业环境政策措施,以减轻农业压力,维持农田景观中的半自然生境。然而,为了保证农业环境措施的成功实施,还需要更多的知识。本研究在爱尔兰两个具有对比性的地区,评估了在农业强度梯度上的农场中半自然生境的数量和质量。政策保护似乎对半自然生境的保护至关重要。没有农业政策保护的生境依赖于粗放型农业,如果加强或放弃农业,它们将有消失的危险。由于缺乏对生境质量的政策激励,因此在农业强度和具有生境质量的半自然生境的比例之间没有发现相关性。因此,仅依靠粗放型农业和保留生境可能无法扭转农田质量和生物多样性的下降,因此,激励环境质量的措施可能会更成功。