Delineating and mapping riparian areas for ecosystem service assessment
Delineating and mapping riparian areas for ecosystem service assessment
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DOI：
10.1002/eco.1928
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发表时间：
2018-03
期刊：
影响因子：
2.6
通讯作者：
L. L. Sosa-L.;H. Glanville;M. Marshall;S. Abood;A. Williams;Davey L. Jones
中科院分区：
文献类型：
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作者：
L. L. Sosa-L.;H. Glanville;M. Marshall;S. Abood;A. Williams;Davey L. Jones
河岸缓冲区是陆地和淡水生态系统之间的界面，有可能保护水体免受陆地污染，并增强一系列生态系统服务的提供。英国目前没有针对特定生态系统服务定义河岸缓冲区的最佳宽度或最大范围。在这里，我们提出第一项研究，试图（a）比较和批评不同的河岸缓冲区划定方法，（b）研究污染物去除、养分循环和水温调节等生态过程如何在空间上受到靠近河流以及河岸缓冲区内的影响。我们的研究结果导致了基于生态系统服务特定场景的河岸划分新概念的发展。我们的研究结果表明，划定方法的选择不仅会影响潜在河岸缓冲区的总面积，还会影响所包括的土地覆盖类型的比例，这反过来又将决定其主要生态系统的供给。因此，对于某些生态过程（例如污染物去除），固定距离方法将保留和保护其生态系统功能，而对于反硝化等过程，可变宽度缓冲区将反映更好的河岸空间变异性，从而最大化其生态价值。总之，英国栖息地内的河岸划分应针对特定的感兴趣的生态系统服务（例如，营养物质的吸收和遮荫），并且缓冲区的有效性应经过实地验证，以确保最大程度的保护。
Riparian buffers, the interface between terrestrial and freshwater ecosystems, have the potential to protect water bodies from land‐based pollution, and also for enhancing the delivery of a range of ecosystem services. The UK currently has no defined optimal width or maximum extent of riparian buffers for specific ecosystem services. Here, we present the first study, which attempts to (a) compare and critique different riparian buffer delineation methods and (b) investigate how ecological processes, for example, pollutant removal, nutrient cycling, and water temperature regulation, are affected spatially by proximity to the river and also within a riparian buffer zone. Our results have led to the development of new concepts for riparian delineation based on ecosystem service‐specific scenarios. Results from our study suggest that choice of delineation method will influence not only the total area of potential riparian buffers but also the proportion of land cover types included, which in turn will determine their main ecosystem provision. Thus, for some ecological processes (e.g., pollutant removal), a fixed‐distance approach will preserve and protect its ecosystem function, whereas for processes such as denitrification, a variable‐width buffer will reflect better riparian spatial variability maximizing its ecological value. In summary, riparian delineation within UK habitats should be specific to the particular ecosystem service(s) of interest (e.g., uptake of nutrients and shading), and the effectiveness of the buffer should be ground‐truthed to ensure the greatest level of protection.