Bragato Claudia, Brix Hans, Malagoli Mario
Department of Agricultural Biotechnology, University of Padova, Agripolis, 35020 Legnaro (PD), Italy.
Environ Pollut. 2006 Dec;144(3):967-75. doi: 10.1016/j.envpol.2006.01.046. Epub 2006 Mar 30.
A recently constructed wetland, located in the Venice lagoon watershed, was monitored to investigate growth dynamics, nutrient and heavy metal shoot accumulation of the two dominating macrophytes: Phragmites australis and Bolboschoenus maritimus. Investigations were conducted over a vegetative season at three locations with different distance to the inlet point to assess effects on vegetation. The distance from the inlet did not affect either shoot biomass or nutrients (N, P, K and Na) and heavy metals (Cr, Ni, Cu and Zn) shoot content. With the exception of Na, nutrient and heavy metal concentrations were higher in shoots of P. australis than in B. maritimus. Heavy metal concentration in the incoming water and in the soil was not correlated to the plant content of either species. Shoot heavy metal concentrations were similar to those reported in the current literature, but accumulation generally increased towards the end of the growing season.
对位于威尼斯泻湖流域的一个新建湿地进行了监测，以研究两种主要大型植物（芦苇和海三棱藨草）的生长动态、养分及重金属在地上部分的积累情况。在一个生长季内，于距进水口不同距离的三个地点开展调查，以评估对植被的影响。距进水口的距离对地上生物量、养分（氮、磷、钾和钠）以及重金属（铬、镍、铜和锌）的地上部分含量均无影响。除钠外，芦苇地上部分的养分和重金属浓度高于海三棱藨草。进水和土壤中的重金属浓度与这两个物种的植物含量均无相关性。地上部分的重金属浓度与当前文献报道的相似，但积累量通常在生长季末期增加。
