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首页> 外文期刊>Biogeosciences >Effects of long-term flooding on biogeochemistry and vegetation development in floodplains; a mesocosm experiment to study interacting effects of land use and water quality
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Effects of long-term flooding on biogeochemistry and vegetation development in floodplains; a mesocosm experiment to study interacting effects of land use and water quality

机译：长期洪水对洪水平原生物地球化学和植被发展的影响;一种研究土地利用和水质的互动影响

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Raising safety levees and reinforcing dykes is not a sufficient andsustainable solution to the intense winter and summer floods occurring withincreasing frequency in Eastern Europe. An alternative, creating permanentlyflooded floodplain wetlands, requires improved understanding of ecologicalconsequences. A 9 month mesocosm study (starting in January), under naturallight and temperature conditions, was initiated to understand the role ofprevious land use (fertility intensity) and flooding water quality on soilbiogeochemistry and vegetation development. Flooding resulted in severeeutrophication of both sediment pore water and surface water, particularlyfor more fertilized soil and sulphate pollution. Vegetation development wasmainly determined by soil quality, resulting in a strong decline of mostspecies from the highly fertilized location, especially in combination withhigher nitrate and sulphate concentrations. Soils from the less fertilizedlocation showed, in contrast, luxurious growth of target Carex species regardlesswater quality. The observed interacting effects of water quality andagricultural use are important in assessing the consequences of plannedmeasures for ecosystem functioning and biodiversity in river floodplains.
机译：提高安全堤和增强堤，对东欧发生频率的激烈冬季和夏季洪水并不充分宽容。替代品，创造了永久性的洪泛平原湿地，需要改善对生态通知的理解。在Naturallight和温度条件下，在Naturallight和温度条件下开始了9个月的Mesocosm学习（1月开始），以了解对PhilbioGeochemisty和植被发展的前陆利用（生力强度）和洪水水质的作用。洪水导致沉积物孔隙水和地表水的重生性化，特别是受精土壤和硫酸盐污染。植被开发是由土壤质量决定的，导致浓度施肥地点的大部分强度下降，特别是与高硝酸盐和硫酸盐浓度相结合。来自较低施肥的土壤表现出，相比之下，靶向靶的豪华生长，无论是无条质的水平。所观察到的水质和农业用途的相互作用效应对于评估河流洪水平坦的生态系统运作和生物多样性的计划的后果很重要。

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