| 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,1995,15(3):281-288. |
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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,贵阳 550002,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,贵阳 550002,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,贵阳 550002,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,贵阳 550002 |
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| 基金项目： | 国家自然科学基金(49273188) |
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| 摘 要： | 利用不同类型土壤－水系统，加入一定量的ＫＮＯ３溶液，进行温度和冻融对脱氮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 |
| 收稿时间： | 1994/8/22 0:00:00 |
EFFECT OF FREEZING-THAWING ON THE ACCUMULATION OF NITRITE IN SOIL-WATER SYSTEM |
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| Piao Hechun,Yuan Zhiyun,Liu Guangshen and Hong Yetang.EFFECT OF FREEZING-THAWING ON THE ACCUMULATION OF NITRITE IN SOIL-WATER SYSTEM[J].Acta Scientiae Circumstantiae,1995,15(3):281-288. |
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| Authors: | Piao Hechun Yuan Zhiyun Liu Guangshen and Hong Yetang |
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| Affiliation: | Key Laboratory of EnvironmentaL Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002,Key Laboratory of EnvironmentaL Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002,Key Laboratory of EnvironmentaL Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 and Key Laboratory of EnvironmentaL Geochemistry, Institute of Geochemistry, Chinese Academy of Sciences, Guiyang 550002 |
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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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