| Adsorption & Release of Nitrogen of Soils in Three Gorges Reservoir |
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| 作者姓名： | ZHAN Yan-ui WANG |
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| 作者单位： | College of Resources and Environmental Science In Li-ao, JIAO Yan-jing Chongqing University, Chongqing 400030, China |
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| 摘 要： | The effects of flooding and subsequent air-drying on NH_4~+ adsorption and the release of nitrogen of typical soils adsorbed ammonia in Three Gorges reservoir were studied in the laboratory.The influence of adsorption and release of soils in Three Gorges Reservoir on Aquatic Environment Quality was also studied.The results show that: 1) The adsorption ability is enhanced by flooding and subsequent air-drying.The capacity of the ammonia adsorption capacity was increased from 666 mg/kg to 833 mg/kg.2) Nitrogen,which has been adsorbed by sample soils in drawdrown area of Three Gorge area,is released under simulating flooding condition.The more the soil adsorbed,the more the nitrogen released.The ratio between aerobic condition and anaerobic condition is 1.2~1.4.3) The soils in drawdrown area of Three Gorge Reservoir can adsorb nitrogen from surface runoff,and during submersion periods the nitrogen is released.The risk of Eutrophication is increased in Three Gorges Reservoir.
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| 关 键 词： | Three Gorge reservoir drawdrown area adsorption - desorption release nitrogen |
| 收稿时间： | 2006/3/22 0:00:00 |
| 修稿时间： | 2006/3/22 0:00:00 |
Adsorption & Release of Nitrogen of Soils in Three Gorges Reservoir |
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| ZHAN Yan-ui,WANG.Adsorption & Release of Nitrogen of Soils in Three Gorges Reservoir[J].Storage & Process,2006(8):10-13. |
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| Authors: | ZHAN Yan-ui WANG |
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| Institution: | College of Resources and Environmental Science In Li-ao, JIAO Yan-jing Chongqing University, Chongqing 400030, China |
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| Abstract: | The effects of flooding and subsequent air-drying on NH_4~+ adsorption and the release of nitrogen of typical soils adsorbed ammonia in Three Gorges reservoir were studied in the laboratory.The influence of adsorption and release of soils in Three Gorges Reservoir on Aquatic Environment Quality was also studied.The results show that: 1) The adsorption ability is enhanced by flooding and subsequent air-drying.The capacity of the ammonia adsorption capacity was increased from 666 mg/kg to 833 mg/kg.2) Nitrogen,which has been adsorbed by sample soils in drawdrown area of Three Gorge area,is released under simulating flooding condition.The more the soil adsorbed,the more the nitrogen released.The ratio between aerobic condition and anaerobic condition is 1.2~1.4.3) The soils in drawdrown area of Three Gorge Reservoir can adsorb nitrogen from surface runoff,and during submersion periods the nitrogen is released.The risk of Eutrophication is increased in Three Gorges Reservoir. |
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| Keywords: | Three Gorge reservoir drawdrown area adsorption - desorption release nitrogen |
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