Article (Scientific journals)
Impacts of (NH4)2SO4 deposition on Norway spruce (Picea abies [L.] Karst) roots
Carnol, Monique; Cudlin, Pavel; Ineson, Phil
1999In Water, Air and Soil Pollution, 116, p. 111-120
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Keywords :
ammonium sulphate; roots; in-growth cores; Picea abies
Abstract :
[en] The effects of enhanced (NH4)(2)SO4 (NS) deposition on Norway spruce (Picea abies [L.] Karst) fine root biomass, vitality and chemistry were investigated using root-free in-growth cores reproducing native organic and mineral soil horizons. The cores were covered and watered every 2 weeks with native throughfall or throughfall supplemented with NS to increase deposition by 75 kg ha(-1) a(-1) NH4+-N (86 kg ha(-1) a(-1) SO42--S). The in-growth cores were sampled after 19 months and assessed for root biomass, necromass, length, tip number, tip vitality and fine root chemistry. Root biomass and fine root aluminium (Al) concentration were negatively correlated, but NS deposition had no effect on root growth or root tip vitality. NS deposition caused increased fine root nitrogen (N) concentrations in the organic horizon and increased Calcium (Ca) concentrations in the mineral horizon. Fine root biomass was higher in the organic horizon, where fine root Al and potassium (K) concentrations were lower and Ca concentrations higher than in the mineral horizon. Results highlighted the importance of soil stratification on fine root growth and chemical composition.
Disciplines :
Phytobiology (plant sciences, forestry, mycology...)
Environmental sciences & ecology
Author, co-author :
Carnol, Monique  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Ecologie végétale et microbienne
Cudlin, Pavel
Ineson, Phil
Language :
English
Title :
Impacts of (NH4)2SO4 deposition on Norway spruce (Picea abies [L.] Karst) roots
Publication date :
1999
Journal title :
Water, Air and Soil Pollution
ISSN :
0049-6979
eISSN :
1573-2932
Publisher :
Kluwer Academic Publishers, Dordrecht, Netherlands
Volume :
116
Pages :
111-120
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 December 2009

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