不同土壤水分条件下酸性硫酸盐土硫形态转化特征

摘要/Abstract

摘要： 以4种土壤湿度、3种干湿交替周期和原状土自然风干8个处理进行酸性硫酸盐土室内模拟实验,对模拟过程内土壤6种硫形态和pH等指标的动态变化过程的跟踪测定和分析结果表明,水分条件对酸性硫酸盐土中水溶性硫、交换性硫和黄铁矿硫的形态转化制约作用显著.淹水环境和过分干燥环境都不利于黄铁矿的氧化及水溶性硫和交换性硫的形成.潮湿但含水量不饱和环境有利于黄铁矿硫向水溶性硫和交换性硫的转换.在3种周期的干湿交替处理中,单一排干期水溶性硫和交换性硫土壤含量平均上升幅度分别为0.90～1.63 g·kg^-1和0.58～1.47 g·kg^-1,而黄铁矿硫含量下降幅度为1.29～3.20 g·kg^-1.淹水期黄铁矿硫含量相对稳定而水溶性硫和交换性硫含量明显下降,并在排水过程中造成总硫的部分流失.硫形态转化量和硫的淋失量受到干湿交替周期的显著影响.同时分析了黄钾铁钒硫、有机硫和元素硫的动态.

关键词: 酸性硫酸盐土, 硫形态, 转化

Abstract: Aimed to detect the quantitative impact of soil water condition on the transformation of sulfur forms in acid sulfate soils(ASS),a simulation test was made with 8 treatments.The results indicated that water was an important factor affecting the transformation processes.Wet but not inundated or over dried condition was benefit to the oxidation of pyrite S and the formation of water soluble S (WS-S) and exchangeable S (Ex-S) in ASS.In the three treatments with different inundated and drained off cycles,soil pyrite S content averagely decreased 1.29～3.20 g·kg^-1 during a single drained off period,while soil WS-S and Ex-S contents averagely increased 0.90～1.63 and 0.58～1.47 g·kg^-1,respectively.During inundated period,soil pyrite S content was relatively stable,but soil WS-S and Ex-S contents were decreased significantly due to the dilution of water.It was suggested that the total S(mainly WS-S)of ASS was discharged in drainage process,and the accumulative amount of the discharge and the transformation of the S forms were associated with the length of the inundated and drained off cycles.The dynamics of Jarosite S,organic S and element S in all treatments were also discussed here.

Key words: Acid sulfate soil, Sulfur forms, Transformation

中图分类号:

S154.1

刘振乾, 段舜山, 李爱芬, 徐宁, 王建武, 李明辉. 不同土壤水分条件下酸性硫酸盐土硫形态转化特征[J]. 应用生态学报, 2004, (9): 1570-1574.

LIU Zhenqian, DUAN Shunshan, LI Aifen, XU Ning, WANG Jianwu, LI Minghui . Transformation characteristics of sulfur forms in acid sulfate soils under different soil water conditions[J]. Chinese Journal of Applied Ecology, 2004, (9): 1570-1574.

参考文献

[1] Bronswijd JJB, Nugroho K, Aribawa IB, et al. 1993. Modeling of oxygen transport and pyrite oxidation in acid sulphate soils. J Environ Qual, 22(3) :544～554
[2] Clark MW, Lancaster G, McConchie D. 1996. Total sulphide acidity for the definition and assessment of acid sulphate hazard: Simple solution or a new suite of problems. Sci Total Environ, 183: 249 ～254
[3] Dent D. 1992. Reclamatin of acid sulfate soils. In: Dent D ed. Advances in Soil Science. Vol. 17. New York: Springer-Verlag. 79 ～122
[4] Department of Soil Physics, Nanjing Institute of Soil Science, Chinese Academy of Sciences(中国科学院南京土壤研究所土壤物理研究室).1978.Methods of Measurement on Soil Physical Properties. Beijing: Science Press. 118～119(in Chinese)
[5] Dost H. 1982. Proceedings of 1st International Symposium on Acid Sulfate Soils. Wageningen:Wageningen LLRI Publisher. 3～27
[6] Holmer M, Kristensen E, Banta G, et al. 1994. Biogeochemical cy cling of sulfur and iron in sediments of a south-east Asian man grove, Phuket Island, Thailand. Biogeochemistry, 26:145～ 161
[7] Huang J-M(黄继茂).1958.Study on the chemical Properties of strong acid salinized paddy soils in coastal area of Guangdong Province.Acta Pedol Sin(土壤学报),6(2):114～121(in Chinese)
[8] Huang Y-N(黄宇年),Lu F-X(陆发熹).1988.A study on the sulfur chemistry of acid sulfate paddy soils of Guangdong Province.Acta Pedol Sin(土壤学报),25(2):101～109(in Chinese)
[9] Hyne RV, Wilson SP. 1997. Toxity of acid sulfate soil leachate and a luminium to the embryos and larvae of Australian bass ( Macquaria maculeata) in estuarine water. Environ Poll, 97 (3) :221～227
[10] Li H-X(李华兴),Zhang X-M(张新明),Lu W-S(卢维盛),et al.1999. Changes of soil chemical properties after transferring acid sulfate paddy soil to upland soil. Chin J Appl Ecol(应用生态学报),10 (3): 317 ～ 320 (in Chinese)
[11] Lin C-X(林初夏).1995.International researches on acid sulphate soils:A review.Progr Soil Sci(土壤学进展),23(3):1～11(in Chinese)
[12] Lin C, Melville MD. 1993. Control of soils acidification by fluvial sedimentation in an estuarine floodplain, eastern Australia. Sediment Geol, 85:1 ～ 13
[13] Mermut AR, Arshad MA. 1987. Significance of sulfide oxidation in soil salinization in Southeastern Saskatchewan. Soil Sci Soc Ame J,51:247～251
[14] Minh LQ, et al. 1998. Soil and water table management effects on aluminum dynamics in an acid sulfate soil in Vietnam. Agric Ecosyst Environ, 68 (3): 255 ～ 262
[15] Sammut J, White I, Melville MD. 1996. Acidification of an estuarine tributary in eastern Australia due to drainage of acid sulfate soils.Mar Freshwater Res, 47: 669～ 684
[16] Wang J-W(王建武),Luo S-M(骆世明).1999.Characteristics of sulfur forms content distribution and its acidification of acid sulfate soils.Chin J Appl Ecol(应用生态学报),10(5):583～588(in Chinese)
[17] Wang J-W(王建武),Luo S-M(骆世明),Feng Y-J(冯远娇).2000.Aluminum forms in acid sulfate soils.Chin J Appl Ecol(应用生态学报),11(5):735～740(in Chinese)
[18] Wilkin RT, Barnes HL. 1996. Pyrite formation by reactions of iron monosulfide with dissolved inorganic and organic sulfur species.Geochim Cosmochim Acta, 60:4167～4179
[19] Wu Y-X(吴又先),Pan S-Z(潘淑贞),Ding C-P(丁昌璞).1993.Oxidation and reduction of sulfur in soils and their ecological significance.Progr Soil Sci(土壤学进展),21(4):9～17(in Chinese)