植被与沉积物特性对亚得里亚海北部盐沼侵蚀的交互作用。
Interactive effects of vegetation and sediment properties on erosion of salt marshes in the Northern Adriatic Sea.
作者信息
Lo V B, Bouma T J, van Belzen J, Van Colen C, Airoldi L
机构信息
Alma Mater Studiorum - University of Bologna, Department of Biological, Geological, and Environmental Sciences (BIGEA) & Centro Interdipartimentale di Ricerca per le Scienze Ambientali (CIRSA), UO CoNISMa, Via S. Alberto 163, 48123, Ravenna, Italy; Marine Biology Research Group, Department of Biology, Ghent University, Campus Sterre S8, Krijgslaan 281, B-9000 Gent, Belgium.
Royal Netherlands Institute for Sea Research (NIOZ), Department of Estuarine and Delta Systems, Korringaweg 7, 4401 NT Yerseke, Netherlands, and Utrecht University, P.O. Box 140, 4400 AC Yerseke, The Netherlands.
出版信息
Mar Environ Res. 2017 Oct;131:32-42. doi: 10.1016/j.marenvres.2017.09.006. Epub 2017 Sep 12.
We investigated how lateral erosion control, measured by novel photogrammetry techniques, is modified by the presence of Spartina spp. vegetation, sediment grain size, and the nutrient status of salt marshes across 230 km of the Italian Northern Adriatic coastline. Spartina spp. vegetation reduced erosion across our study sites. The effect was more pronounced in sandy soils, where erosion was reduced by 80% compared to 17% in silty soils. Erosion resistance was also enhanced by Spartina spp. root biomass. In the absence of vegetation, erosion resistance was enhanced by silt content, with mean erosion 72% lower in silty vs. sandy soils. We found no relevant relationships with nutrient status, likely due to overall high nutrient concentrations and low C:N ratios across all sites. Our results contribute to quantifying coastal protection ecosystem services provided by salt marshes in both sandy and silty sediments.
我们利用新型摄影测量技术，研究了意大利亚得里亚海北部海岸线230公里范围内，互花米草属植物的存在、沉积物粒度以及盐沼养分状况对侧向侵蚀控制的影响。互花米草属植物减少了我们研究地点的侵蚀。在沙质土壤中，这种效果更为明显，与粉质土壤中17%的侵蚀减少率相比，沙质土壤中的侵蚀减少了80%。互花米草属植物的根生物量也增强了抗侵蚀能力。在没有植被的情况下，粉粒含量增强了抗侵蚀能力，粉质土壤中的平均侵蚀率比沙质土壤低72%。我们没有发现与养分状况的相关关系，这可能是由于所有地点的养分浓度总体较高且碳氮比低。我们的研究结果有助于量化盐沼在沙质和粉质沉积物中提供的海岸保护生态系统服务。
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