| 冻融对土－水系统中亚硝酸盐积累的影响 |
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| 引用本文： | 朴河春,袁芷云,刘广深,洪业汤.冻融对土－水系统中亚硝酸盐积累的影响[J].环境科学学报,1995(3). |
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| 作者姓名： | 朴河春 袁芷云 刘广深 洪业汤 |
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| 作者单位： | 中国科学院地球化学研究所，环境地球化学国家重点实验室 |
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| 摘 要： | 利用不同类型土壤－水系统，加入一定量的ＫＮＯ＿３溶液，进行温度和冻融对脱氮化作用的影响以及亚硝酸盐积累规律的研究，培育实验结果表明，低温下，尤其是冻融条件下亚硝酸盐积累，是由于冻融加强有机质的分解及矿化作用所引起。将此结果用来解释克山病环境地球化学病因：急性克山病往往发生在冬春季节，这可能与冻融条件下水体中大量积累亚硝酸盐有关。
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| 关 键 词： | 土壤冻融 脱氮化作用 亚硝酸盐积累。 |
EFFECT OF FREEZING-THAWING ON THE ACCUMULATION OF NITRITE IN SOIL-WATER SYSTEM |
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| Piao Hechun,Yuan Zhiyun,Liu Guangshen,Hong Yetang.EFFECT OF FREEZING-THAWING ON THE ACCUMULATION OF NITRITE IN SOIL-WATER SYSTEM[J].Acta Scientiae Circumstantiae,1995(3). |
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| Authors: | Piao Hechun Yuan Zhiyun Liu Guangshen Hong Yetang |
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| Abstract: | Effects of temperature and freezing-thawing on denitrifcation and accumulation of ni-trite in different soil-water systems were investigated.Incubation experimental results indi-cated that the accumulation of nitrite under low temperature,especially freezing-thawingconditions,is due to enhancing involvement of organic matter in mineralization by freezing-thawing events,which provided the available organic carbon compounds for denitrifyingbacteria,The results have been used to interpret Keshan disease environmental geochemicalpathonecy. Acute Keshan disease is usually prevalent in winter-spring seasons,related tothe accumulation of nitrite in large amounts in the water body under freezing-thawing condi-tions. |
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| Keywords: | soil frezzing-thawing denitrification accumulation of nitrite |
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