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	Long-term changes in soil pH across major forest ecosystems in China
	Yang Y. H.; Li, P.; He, H. L.; Zhao, X.; Datta, A.; Ma, W. H.; Zhang, Y.; Liu, X. J.; Han, W. X.; Wilson, M. C.
	2015
关键词	artificial neural network data synthesis national soil inventory soil pH dynamics organic-carbon nitrogen deposition tropical forest sulfur-dioxide east-asia acidification mountains emissions patterns trends
英文摘要	Atmospheric acidic deposition has been a major environmental problem since the industrial revolution. However, our understanding of the effect of acidic deposition on soil pH is inconclusive. Here we examined temporal variations in topsoil pH and their relationships with atmospheric sulfur and nitrogen deposition across China's forests from the 1980s to the 2000s. To accomplish this goal, we conducted artificial neural network simulations using historical soil inventory data from the 1980s and a data set synthesized from literature published after 2000. Our results indicated that significant decreases in soil pH occurred in broadleaved forests, while minor changes were observed in coniferous and mixed coniferous and broadleaved forests. The magnitude of soil pH change was negatively correlated with atmospheric sulfur and nitrogen deposition. This relationship highlights the need for stringent measures that reduce sulfur and nitrogen emissions so as to maintain ecosystem structure and function.
出处	Geophysical Research Letters
卷	42
期	3
页	933-940
收录类别	SCI
语种	英语
ISSN号	0094-8276
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/38981]
专题	资源利用与环境修复重点实验室_资源地理与国土资源研究室_SCI/SSCI期刊论文 中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Yang Y. H.,Li, P.,He, H. L.,et al. Long-term changes in soil pH across major forest ecosystems in China. 2015.

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