VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

The agricultural potential... / Ovidius University Annals, Biology-Ecology Series 14: 185-190 (2010)
- Taking into account the fact that the harvest of
shoots takes place between November and
February, the annual leaf litter on the
phosphogypsum surface will accelerate the
process of soil formation;
- By the phenomenon of bioaccumulation, the
trees (shrubs) from the plantation will
concentrate into their own structures important
quantities of heavy metals that will be removed
annually by cutting the shoots and decreasing
thus the polluting content of the
phosphogypsum;
- The species of the genus Salix, fond of
humidity, will retain part of the water resulted
from precipitations, reducing drastically the
levigation phenomenon and the draining of the
phosphorus into the ground water;
- The photosynthesis and evapo-transpiration
generated by the willows will improve air
quality and the local microclimate during the
warm season.
The main disadvantage is the fact that, being a
monoculture, it will be more vulnerable to pests.
Another possible disadvantage is that, because the
cuttings are not planted like in a culture on swampy
or irrigated land (the same density per square meter),
the quantity of wood mass per ha can be reduced.
5. References
[1]. SÂRBU I., Stefan N., Ivănescu Lăcrămioara,
Mânzu C., 2001. Flora ilustrată a plantelor
vasculare din estul României, Determinator, vol.
I şi II, Editura Universităţii „Alexandru Ioan
Cuza”, Iaşi.
[2]. GOMOIU M.-T., Skolka M., 2001. Ecologie -
Metodologii pentru studii ecologice, Ovidius
University Press, Constanţa.
[3]. SKVORTSOVA. K., 1999. Willows of Russia
and adjacent countries. Taxonomical and
geographical review. Univ. Joensuu Fac.
Mathem. and Natru. Sci. Rept. Ser. 39. 307 pp.
[4]. www.bfafh.de/inst2/sg-pdf/52_3-4_148.pdf.
Diversity of dte willow complex Salix alba – S x.
rubens – S. Fragilis
190
[5]. www.containment.fsu.edu/cd/content/pdf/466.pd
f. Vegetative cover for phosphogypsum dumps:
A Romanian field study.
[6]. CROUCH R.J, Honeyman M.N., 1986, 'The
relative salt tolerance of willow cuttings.' Journal
of Soil Conservation, vol 42 (2), p. 103-104.
[7]. ZALLAR S. Botanical Characteristics of the
Willows, Soil Conservation Authority, Kew.
[8]. www.sci.uszeged.hu/ABS/2006/Acta%20HP/50
37.pdf. Change of root and rhizosphere characters
of willow (Salix sp) induced by high heavy metal
pollution.
[9]. www.umass.edu/.../Phytoremediation%20PDF
/PhytoLitReview.pdf. Phytoremediation literature
review.
[10]. www.bioeng.ca/pdfs/meetingpapers/2005/CSAE%20papers/05-080.pdf.
Cutting, bundling and chipping shortrotation
willow.