通过对惠州大亚湾春夏季大气沉降的采样分析,探讨了大亚湾大气干湿沉降中氮磷营养盐的特征。结果表明,观测期间总氮和总磷的月均沉降通量分别为257.45和1.79kg·km-2·月-1,均以湿沉降为主。氮的干湿沉降都表现出了明显的春夏季变化差异,干沉降通量夏季比春季大,而湿沉降的结果与此相反；磷的干湿沉降在两季的观测结果均趋于稳定,无明显变化。在降雨冲刷、季风气候引起的大气传输和局部污染的共同作用下,大亚湾大气中的营养盐主要以NO3--N的形式存在。大亚湾大气中的氮盐是该地区大气污染的主要控制目标。%In order to understand the characteristics of atmospheric nutrient deposition, measurements of dry and wet depositions of nitrogen and phosphorus were made at Daya Bay in Huizhou during spring and summer. Results showed that the average atmospheric fluxes were 257.45 and 1.79 kg·km-2·month-1 for TN and TP, respectively. Wet deposition had a larger contribution to the total flux than dry deposition for both N and P species. N species showed different variation regularity during the study period;dry deposition fluxes were higher in summer and lower in spring, while wet deposition fluxes showed the opposite trend. For P species, both dry and wet depositions showed no significant difference. With the effect of rainfall and atmospheric transmission caused by monsoon climate and regional pollution, the nutrients in the atmosphere existed mainly in the form of NO3--N. N species were the main controlled target of air pollutions at Daya Bay.
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