Biomass allocation and nutrient use in fast-growing woody and herbaceous perennials used for phytoremediation |
| |
Authors: | Anneli Adler Almir Karacic Martin Weih |
| |
Institution: | (1) Department of Crop Production Ecology, Swedish University of Agricultural Sciences (SLU), P.O. Box 7043, 750 07 Uppsala, Sweden;(2) Department of Energy and Technology, Swedish University of Agricultural Sciences (SLU), P.O. Box 7032, 750 07 Uppsala, Sweden;(3) Institute of Agricultural and Environmental Sciences, Estonian University of Life Sciences, Riia 181, 51014 Tartu, Estonia |
| |
Abstract: | This study assessed the suitability of two deciduous woody perennials (Salix spp. and Populus spp.) and two summer green herbaceous perennials (Phragmites australis and Urtica dioica) for purification of nutrient enriched wastewater. The main hypothesis tested was that species with a particular trait combination
of high relative growth rate (RGR), low nutrient productivity (A) and high mean residence time (MRT) of nutrients would be most effective in accumulating nutrients. The nitrogen and phosphorus
use efficiency at the whole plant level was analysed. Four treatments comprising two possible phytoremediation substrates
(municipal wastewater and landfill leachate) and two control plant nutrition situations (balanced nutrient solution and pure
water) were applied in four replications to the four plant species. Generally, all four species studied showed a high RGR
and a low P productivity in the balanced nutrient solution treatment, while the opposite (low RGR and high P productivity)
was seen in the phytoremediation substrate and pure water treatments. The general conclusion is that if P is present in marginal
proportions in the wastewater, a vegetation filter with Phragmites would have an advantage since biomass and nutrient accumulation in Phragmites does not decrease as much during phytoremediation as that in deciduous woody perennials. |
| |
Keywords: | Growth form Landfill leachate Nitrogen use efficiency Phosphorus use efficiency Phragmites australis Populus Salix Urtica dioica Vegetation filter Wastewater |
本文献已被 SpringerLink 等数据库收录! |
|