QQ客服 官方微博 反馈留言

	Water chemistry in forested acid sensitive sites in sub-tropical Asia receiving acid rain and alkaline dust
	Vogt, Rolf D. ; Guo, Jingheng ; Luo, Jiahai ; Peng, Xiaoyu ; Xiang, Renjun ; Xiao, Jinsong ; Zhang, Xiaoshan ; Zhao, Dawei ; Zhao, Yu
	2010-05-10 ; 2010-05-10
会议名称	APPLIED GEOCHEMISTRY ; 7th International Conference on Acid Deposition ; Prague, CZECH REPUBLIC ; Web of Science
关键词	ATMOSPHERIC DEPOSITION ALUMINUM MOBILITY WET DEPOSITION CHINA ACIDIFICATION SOILS NITROGEN Geochemistry & Geophysics
中文摘要	Acid rain, due to wet and dry deposition of S and N compounds, is an increasing environmental problem in China. A considerable deposition of alkaline dust serves to mitigate the acidifying effect to varying extent. Data from 3 years, a monitoring of water chemistry in 10 water compartments (i.e., two qualities of deposition, two types of throughfall, solution in five genetic soil horizons, and runoff) at five well documented sub-tropical forested catchments, have been interpreted in order to identify key processes governing the water chemistry in catchments suffering acid rain. This study of water chemistry in regions with sub-tropical climate supplements similar monitoring studies conducted in temperate regions with different types of soils and compositions of deposition. Natural organic acids as well as nutrient cycling of K+ have strong influence on the water chemistry in throughfall and upper soil horizons at the relatively pristine sites. At sites receiving elevated S and N deposition an accelerated cycling of K+ removes much of the mineral acidity in throughfall. The soil uptake of this K+ results in release of H+. Nitrification and/or assimilation of a substantial deposition of reduced N contributes at some sites also significantly to the acidity in the soils. During the study period, Ca2+ in solution was exchanged for Al3+ in the soils with an effective base saturation less than 20%. In deeper soil horizons most of this mobilized Al is readsorbed along with SO42- (c) 2007 Elsevier Ltd. All rights reserved.
会议录出版者	PERGAMON-ELSEVIER SCIENCE LTD ; OXFORD ; THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND
语种	英语 ; 英语
内容类型	会议论文
源URL	[http://hdl.handle.net/123456789/18903]
专题	清华大学
推荐引用方式 GB/T 7714	Vogt, Rolf D.,Guo, Jingheng,Luo, Jiahai,et al. Water chemistry in forested acid sensitive sites in sub-tropical Asia receiving acid rain and alkaline dust[C]. 见:APPLIED GEOCHEMISTRY, 7th International Conference on Acid Deposition, Prague, CZECH REPUBLIC, Web of Science.

个性服务

查看访问统计

相关权益政策

暂无数据

收藏/分享

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。