山地城市大气湿沉降特征——以西南山地城市万州为例
Journal: Ecological Environment and Protection DOI: 10.12238/eep.v8i2.2519
Abstract
为讨论山地城市大气氮湿沉降特征以及潜在来源,本研究通过定点野外采样对典型山地城市万州的大气氮湿沉降进行监测分析,结论如下：年降雨量为1431.05mm,夏秋季降雨高于春冬季,降水pH范围在5.88-8.42之间,夏秋季高于春冬季,未发生酸雨现象,表明大气环境质量较好。氮沉降以NH4+-N沉降为主要贡献形态,NH4+-N、NO3--N和TDN为冬季沉降低,NH4+-N和TDN秋季沉降高,NO3--N夏季沉降高。研究区的气团轨迹以短距离运输为主,湖北恩施是万州区大气氮素主要潜在来源地区。
Keywords
山地城市；氮沉降；后向轨迹
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