Factors associated with reed decline in a eutrophic fishpond, Rožmberk (South Bohemia, Czech Republic)
Factors associated with reed decline in a eutrophic fishpond, Rožmberk (South Bohemia, Czech Republic)
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与富营养化鱼塘芦苇衰退相关的因素，Rožmberk（捷克共和国南波希米亚）
DOI：
10.1007/bf02803996
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发表时间：
1996
影响因子：
1.2
通讯作者：
Jaroslava Lukavská
中科院分区：
文献类型：
--
作者：
H. Čížková;J. Strand;Jaroslava Lukavská
对罗日姆贝克（Rožmberk）鱼塘西海岸沿着芦苇的生长、性能及沉积物特性进行了研究。芦苇的性能下降向南端的海岸，接近出口的废水和未经处理的污水。芦苇林在北方被封闭，看起来很健康，但在芦苇带更南边的被洪水淹没的部分出现了空隙;海岸最南端的沿着没有芦苇，尽管死枝残茬表明它在更早的时候就存在了。在后一地点，沉积物表层由有机物含量高、需氧量高的细泥组成。在较小的程度上，部分分解的芦苇凋落物斑块内的差距表现出相同的属性。这表明，芦苇带的淹没部分内的有机质积累可能会降低植物的性能，最终导致形成的差距。后期，芦苇带的湖滨带崩塌，完成了芦苇的退水。钙对有机物的不利影响的保护作用。
Characteristics of the growth and performance ofPhragmites australisas well as sediment characteristics were investigated along the western shore of Rožmberk fishpond. The reed performance decreased toward the southern end of the shore, proximate to outlets of wastewater effluent and untreated sewage. While the reed stand was closed and looked healthy at the northern end, gaps occurred within the flooded part of the reed belt further southwards; reed was absent in water along the southernmost part of the shore, though dead shoot stubble indicated its presence in earlier times. In the latter site, the surface layer of sediment consisted of fine mud with a high organic matter content and a high oxygen demand. To a smaller extent, patches of partly decomposed reed litter inside the gaps showed the same properties. It is suggested that organic matter accumulating within the flooded part of the reed belt may have reduced plant performance which ultimately lead to the formation of gaps. At a later stage, the lakeside fringe of the reed belt collapsed, thus completing the retreat of reed from water. A protective effect of calcium against the adverse effects of organic matter is suggested.