| 亚热带稻区大气氨/铵态氮污染特征及干湿沉降 |
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| 引用本文： | 王杰飞,朱潇,沈健林,曾冠军,王娟,吴金水,李勇.亚热带稻区大气氨/铵态氮污染特征及干湿沉降[J].环境科学,2017,38(6):2264-2272. |
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| 作者姓名： | 王杰飞 朱潇 沈健林 曾冠军 王娟 吴金水 李勇 |
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| 作者单位： | 中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125;中国科学院大学资源与环境学院, 北京 100049,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125;中国科学院大学资源与环境学院, 北京 100049,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125,中国科学院亚热带农业生态研究所亚热带农业生态过程重点实验室, 长沙 410125;中国科学院长沙农业环境观测研究站, 长沙 410125 |
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| 基金项目： | 国家重点研发计划项目（2016YFD0200307）；国家自然科学基金项目（41371303） |
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| 摘 要： | 氨气(NH3)是重要的碱性气体,是气溶胶和雨水中铵态氮的重要前体物质.在高强度的NH3及酸性气体排放下,我国亚热带双季稻区大气中氨氮(NH_3~-N)、气溶胶及雨水中铵态氮污染特征及其干湿沉降量还不尚清楚.本研究在我国亚热带丘陵区一个典型双季稻区,同步监测大气中NH3、气溶胶中铵态氮以及雨水中铵态氮浓度及相关气象因子,旨在明确各种大气氨/铵组分浓度特征及其影响因素,并定量计算氨/铵态氮的干湿沉降量.结果表明,大气中NH_3~-N、大气颗粒物PM10中铵态氮以及雨水中铵态氮年平均浓度分别为5.7μg·m~(-3)、12.8μg·m~(-3)和0.8 mg·L~(-1),氮沉降量分别为8.38、5.61和9.07kg·(hm~2·a)-1.稻田施氮肥显著提高NH_3~-N浓度,且NH_3~-N浓度与气温表现出显著正相关;颗粒态铵态氮浓度与NH_3~-N浓度无显著相关,表明研究区NH_3~-N浓度不是形成颗粒态铵态氮污染的主要限制因子;雨水中铵态氮浓度主要与颗粒态铵态氮浓度成正相关,与降雨量成负相关.采样点较高的大气氨/铵态氮浓度和沉降量说明当地的大气氨/铵污染比较严重,大气氨/铵态氮沉降已成为农田氮素的重要来源,需要在氮素养分管理中加以考虑.
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| 关 键 词： | 氨气 气溶胶 活性氮 大气沉降 水稻 |
| 收稿时间： | 2016/10/24 0:00:00 |
| 修稿时间： | 2017/1/4 0:00:00 |
Atmospheric Ammonia/Ammonium-nitrogen Concentrations and Wet and Dry Deposition Rates in a Double Rice Region in Subtropical China |
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| WANG Jie-fei,ZHU Xiao,SHEN Jian-lin,ZENG Guan-jun,WANG Juan,WU Jin-shui and LI Yong.Atmospheric Ammonia/Ammonium-nitrogen Concentrations and Wet and Dry Deposition Rates in a Double Rice Region in Subtropical China[J].Chinese Journal of Environmental Science,2017,38(6):2264-2272. |
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| Authors: | WANG Jie-fei ZHU Xiao SHEN Jian-lin ZENG Guan-jun WANG Juan WU Jin-shui and LI Yong |
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| Institution: | Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;College of Resources and Environment, University of Chinese Academy of Sciences, Beijing 100049, China,Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China,Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China,Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China,Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China and Key Laboratory of Agro-ecological Processes in Subtropical Regions, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China;Changsha Research Station for Agricultural & Environmental Monitoring, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha 410125, China |
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| Abstract: | |
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| Keywords: | ammonia aerosol reactive nitrogen atmospheric deposition rice |
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