| 季节性温度升高对落干期消落带土壤氮矿化影响 |
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| 引用本文： | 林俊杰,张帅,刘丹,周斌,肖晓君,马慧燕,于志国.季节性温度升高对落干期消落带土壤氮矿化影响[J].环境科学,2016,37(2):697-702. |
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| 作者姓名： | 林俊杰 张帅 刘丹 周斌 肖晓君 马慧燕 于志国 |
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| 作者单位： | 重庆三峡学院三峡库区水环境演变与污染防治重庆高校市级重点实验室, 重庆 404100;中国科学院重庆绿色智能技术研究院中国科学院水库水环境重点实验室, 重庆 400714;重庆三峡学院三峡库区水环境演变与污染防治重庆高校市级重点实验室, 重庆 404100;重庆三峡职业学院农林科技系, 重庆 404100;辽宁省气象科学研究所, 沈阳 110166;重庆三峡学院三峡库区水环境演变与污染防治重庆高校市级重点实验室, 重庆 404100;重庆三峡学院三峡库区水环境演变与污染防治重庆高校市级重点实验室, 重庆 404100;南京信息工程大学水文气象学院, 南京 210044 |
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| 基金项目： | 国家自然科学基金项目(41301248);中国科学院水库水环境重点实验室开放基金项目(RAE2014BA01B);重庆高校市级重点实验室开放基金项目(WEPKL2013MS-06) |
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| 摘 要： | 为揭示季节性温度升高对消落带落干期土壤氮矿化的影响,分别采集三峡支流澎溪河消落带上游和下游两个水文断面,155 m(低)、165 m(中)和175 m(高)这3个水位高程表层土壤,结合落干期气温变化特点,在25℃和35℃两个温度下进行恒温培养.结果表明,消落带土壤总氮和硝态氮在上游断面和高水位高程含量更高,而下游和低水位高程含量更低,铵态氮分布与其相反.硝态氮是无机氮的主要存在形式,占无机氮的57.4%~84.7%.相同培养温度下,氨化、硝化、净氮矿化速率均表现为随水位高程增加,随流域断面由下至上而显著增加(P0.05);总体上,在水位高程和流域断面上均表现为:温度升高使硝化速率和净氮矿化速率显著增加(P0.05),而对土壤氨化速率无显著影响(P0.05).
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| 关 键 词： | 三峡支流 氮矿化 温度升高 落干期 消落带 |
| 收稿时间： | 2015/6/16 0:00:00 |
| 修稿时间： | 2015/9/17 0:00:00 |
Effect of Seasonal Temperature Increasing on Nitrogen Mineralization in Soil of the Water Level Fluctuating Zone of Three Gorge Tributary During the Dry Period |
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| LIN Jun-jie,ZHANG Shuai,LIU Dan,ZHOU Bin,XIAO Xiao-jun,MA Hui-yan and YU Zhi-guo.Effect of Seasonal Temperature Increasing on Nitrogen Mineralization in Soil of the Water Level Fluctuating Zone of Three Gorge Tributary During the Dry Period[J].Chinese Journal of Environmental Science,2016,37(2):697-702. |
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| Authors: | LIN Jun-jie ZHANG Shuai LIU Dan ZHOU Bin XIAO Xiao-jun MA Hui-yan and YU Zhi-guo |
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| Institution: | Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing 404100, China;Key Laboratory of Reservoir Aquatic Environment, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China;Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing 404100, China;Department of Agricultural and Forestry Science and Technology, Chongqing Three Gorges Vocation College, Chongqing 404100, China;Liaoning Institute of Meteorological Science, Shenyang 110166, China;Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing 404100, China;Key Laboratory of Water Environment Evolution and Pollution Control in Three Gorges Reservoir, Chongqing Three Georges University, Chongqing 404100, China;College of Hydrometeorology, Nanjing University of Information Science and Technology, Nanjing 210044, China |
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| Abstract: | |
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| Keywords: | Three Gorge Tributary nitrogen mineralization temperature increasing dry period water level fluctuating zone |
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