Evaluating controlling factors to Al-i/(Ca+Mg) molar ratio in acidic soil water, southern and southwestern China: Multivariate approach

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气环境科学实验室

	Evaluating controlling factors to Al-i/(Ca+Mg) molar ratio in acidic soil water, southern and southwestern China: Multivariate approach
	Guo, Jing-Heng; Zhang, Xiao-Shan; Vogt, Rolf D.; Xiao, Jin-Song; Zhao, Da-Wei; Xiang, Ren-Jun; Luo, Jia-Hai
刊名	ENVIRONMENTAL MONITORING AND ASSESSMENT
	2007-06
卷号	129 期号:1 页码:321-329
关键词	Ali/(i)(Ca + Mg) molar ratio controlling factors acid forest soil acid deposition China
英文摘要	Al-i/(Ca + Mg) molar ratio in soil water has been used as an indicator to the effects of acid deposition on terrestrial ecosystems. However, the main factors controlling this ratio have not been well documented in southern and southwestern China. In this study, we presented the variation in inorganic aluminum (Al-i) and Al-i/(Ca + Mg) molar ratio in different sites and soil horizons based on two to three years monitoring data, and evaluated the main factors controlling Al-i/(Ca + Mg) molar ratio using principle component analysis (PCA) and partial least square (PLS) regression. Monitoring data showed although Al-i/(Ca + Mg) molar ratios in most soil water were lower than assumed critical 1.0, higher molar ratios were found in some soil water at TSP and LXH site. Besides acid loading, both soil properties and soil water chemistry affected the value of Al-i/(Ca + Mg) molar ratio in soil water. Partial least square (PLS) indicated that they had different relative importance in different soil horizons. In A-horizon, soil aluminum saturation (AIS) had higher influence on Al-i/(Ca + Mg) molar ratio than soil water chemistry did; higher soil aluminum saturation (AIS) led to higher Al-i/(Ca + Mg) molar ratio in soil water. In the deeper horizons (i.e., B-1-, B-2- and BC-horizon), inorganic aluminum (Al-i) in soil water had more and more important role in regulating Al-i/(Ca + Mg) molar ratio. On regional scale, soil aluminum saturation (AIS) as well as cation exchange capacity (CEC) was the dominant factor controlling Al-i/(Ca + Mg) molar ratio. This should be paid enough attention on when making regional acid min control policy in China.
WOS记录号	WOS:000247095200033
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/22403]
专题	生态环境研究中心_大气环境科学实验室
推荐引用方式 GB/T 7714	Guo, Jing-Heng,Zhang, Xiao-Shan,Vogt, Rolf D.,et al. Evaluating controlling factors to Al-i/(Ca+Mg) molar ratio in acidic soil water, southern and southwestern China: Multivariate approach[J]. ENVIRONMENTAL MONITORING AND ASSESSMENT,2007,129(1):321-329.
APA	Guo, Jing-Heng.,Zhang, Xiao-Shan.,Vogt, Rolf D..,Xiao, Jin-Song.,Zhao, Da-Wei.,...&Luo, Jia-Hai.(2007).Evaluating controlling factors to Al-i/(Ca+Mg) molar ratio in acidic soil water, southern and southwestern China: Multivariate approach.ENVIRONMENTAL MONITORING AND ASSESSMENT,129(1),321-329.
MLA	Guo, Jing-Heng,et al."Evaluating controlling factors to Al-i/(Ca+Mg) molar ratio in acidic soil water, southern and southwestern China: Multivariate approach".ENVIRONMENTAL MONITORING AND ASSESSMENT 129.1(2007):321-329.