酸性硫酸盐土中硫形态转化过程的水分制约作用

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Abstract

Simulation test of the acid sulfate soil (ASS) included 5 treatments. They were 30% of field capacity (FHl), 70% of field capacity(FH2), inundated (INU), air-dried (DRY), and naturally air-dried (NAD). The test indicated that water was an important factor on the transformation between the forms of sulfur of ASS such as water soluble S, exchangeable S, and pyrite S.The test showed that wet but not inundated or over dried was benefit to the oxidation of pyrite and the formation of water soluble S and exchangeable S in ASS. During the whole simulation period, the increases of water soluble S content of the ASS from big to small were: FH2 > FH1 > INU; the increases of exchangeable S content of the ASS from big to small were: FHl > FH2 > INU; the decreases of pyrite S content of the ASS from big to small were: FH2 > FHl > INU.Significant transformation of S forms happened during the air-drying process of the NAD treatment. The dynamic of Jarosite-S, organic S and element S in all treatments are also discussed here.

Key words： Acid sulfate soil Sulfur Transformation

Received: 25 February 2002

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	Articles by authors
	Liu Zhenqian
	Wangjianwu
	Luo Shiming
	Qu Meimei

Cite this article:

Liu Zhenqian,Wangjianwu,Luo Shiming, et al. Effects of soil moisture on the transformation between sulfur forms in acid sulfate soils[J]. , 2002, 21(1): 68-71.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2002/V21/I1/68

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