<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jung, Kangho</style></author><author><style face="normal" font="default" size="100%">Chang, Scott X.</style></author><author><style face="normal" font="default" size="100%">Arshad, M. A. Charlie</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Effects of canopy-deposition interaction on H+ supply to soils in Pinus banksiana and Populus tremuloides ecosystems in the Athabasca oil sands region in Alberta, Canada</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">acidity</style></keyword><keyword><style  face="normal" font="default" size="100%">air emissions</style></keyword><keyword><style  face="normal" font="default" size="100%">alkalinity</style></keyword><keyword><style  face="normal" font="default" size="100%">model</style></keyword><keyword><style  face="normal" font="default" size="100%">modeling</style></keyword><keyword><style  face="normal" font="default" size="100%">monitoring</style></keyword><keyword><style  face="normal" font="default" size="100%">pH</style></keyword><keyword><style  face="normal" font="default" size="100%">sulphur and SO2</style></keyword><keyword><style  face="normal" font="default" size="100%">trees</style></keyword><keyword><style  face="normal" font="default" size="100%">UofA</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">2011</style></year><pub-dates><date><style  face="normal" font="default" size="100%">05/2011</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://era.library.ualberta.ca/files/3b5919619/EnvironmentalPollution_159_2011_1327.pdf</style></url></web-urls></urls><publisher><style face="normal" font="default" size="100%">Environmental Pollution </style></publisher><volume><style face="normal" font="default" size="100%">159</style></volume><pages><style face="normal" font="default" size="100%">27 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Soil acidification has been of concern in the oil sands region in Alberta due to increased acid deposition. Using the canopy budget model, and accounting for H+ canopy leaching by organic acids, we determined sources and sinks of H+ in throughfall in jack pine (Pinus banksiana) and trembling aspen (Populus tremuloides) stands in two watersheds from 2006 to 2009. In pine stands, H+ deposition was greater in throughfall than in bulk precipitation while the opposite was true in aspen stands. The annual H+ interception deposition was 148.8–193.8 and 49.7–70.0 molc ha−1 in pine and aspen stands, respectively; while the annual H+ canopy leaching was 127.1–128.7 and 0.0–6.0 molc ha−1, respectively. The greater H+ supply in pine stands was caused by greater interception deposition of SO42− and organic acids released from the pine canopy. Such findings have significant implications for establishing critical loads for various ecosystems in the oil sands region.</style></abstract><issue><style face="normal" font="default" size="100%">5</style></issue><custom2><style face="normal" font="default" size="100%">Athabasca Oil Sands Region (AOSR)</style></custom2><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/711969978</style></custom3><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>