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1. Warming effects on root morphological and physiological traits: The potential consequences on soil C dynamics as altered root exudation

Author:
Yin, Huajun; Xiao, Juan; Li, Yufei; Chen, Zhi; Cheng, Xinying; Zhao, Chunzhang; Liu, Qing
Source:
Agricultural and forest meteorology 2013 v.180 pp. 287-296
ISSN:
0168-1923
Subject:
Picea asperata; carbon; carbon dioxide; exudation; global warming; infrared heaters; roots; soil; soil organic matter; soil respiration; trees; uncertainty analysis
Abstract:
... Root and rhizosphere processes contribute significantly to soil carbon (C) fluxes, yet mechanism by which they do are not well understood. One of the contributing factors to this uncertainty is the lack of understanding about the role of root-derived labile C inputs in influencing soil organic matter (SOM) decomposition. We conducted an experiment to compare the pure impacts of two coniferous spec ...
DOI:
10.1016/j.agrformet.2013.06.016

2. Effects of a three-year exposure to ambient ozone on biomass allocation in poplar using ethylenediurea

Author:
Hoshika, Yasutomo; Pecori, Francesco; Conese, Ilaria; Bardelli, Tommaso; Marchi, Enrico; Manning, William J.; Badea, Ovidiu; Paoletti, Elena
Source:
Environmental pollution 2013 v.180 pp. 299-303
ISSN:
0269-7491
Subject:
Populus; biomass; branches; carbon; dry matter partitioning; leaves; ozone; protective effect; trees
Abstract:
... We examined the effect of ambient ozone on visible foliar injury, growth and biomass in field-grown poplar cuttings of an Oxford clone sensitive to ozone (Populus maximoviczii Henry × berolinensis Dippel) irrigated with ethylenediurea (EDU) or water for three years. EDU is used as an ozone protectant for plants. Protective effects of EDU on ozone visible injury were found. As a result, poplar tree ...
DOI:
10.1016/j.envpol.2013.05.041
PubMed:
23807179