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当前位置: 首页 > 文章 > 陕北典型农区大气干湿氮沉降季节变化 应用生态学报 2010,21 (1) 255-259
Position: Home > Articles > Atmospheric dry and wet nitrogen deposition in typical agricultural areas of North Shaanxi Chinese Journal of Applied Ecology 2010,21 (1) 255-259

陕北典型农区大气干湿氮沉降季节变化

作  者：
魏样;同延安;段敏;乔丽;田红卫;雷小鹰;马文娟
单  位：
榆阳区气象局;陕西省气象局;西北农林科技大学资源环境学院;洛川县气象局
关键词：
陕北;大气氮沉降;湿沉降;干沉降
摘  要：
为了研究大气通过干湿沉降输入到农田土壤的氮通量,2007年6月至2008年5月在陕西榆林和洛川两地进行了为期一年的观测试验.结果表明:榆林和洛川地区大气总无机氮沉降通量分别为22.17和16.95kg.hm-2.a-1,湿沉降分别占95.1%和90.4%,干沉降分别占4.9%和9.6%,两个地区氮沉降均以湿沉降为主.总无机氮沉降中,NO3--N分别为12.22和9.24kg.hm-2.a-1,分别占总无机氮沉降量的55.1%和54.5%.由于污染水平、气象条件、下垫面特性等的差异,总无机氮沉降中,湿沉降量和NO3--N沉降量均是榆林地区大于洛川地区.
译  名：
Atmospheric dry and wet nitrogen deposition in typical agricultural areas of North Shaanxi
作  者：
WEI Yang1,TONG Yan-an1,DUAN Min1,QIAO Li2,TIAN Hong-wei3,LEI Xiao-ying4,MA Wen-juan1 (1College of Resources and Environmental Sciences,Northwest Agriculture & Forestry University,Yangling 712100,Shaanxi,China;2Shaanxi Provincial Meteorological Bureau,Xi'an 710014,China;3Yuyang Meteorological Bureau,Yulin 719000,Shaanxi,China;4Luochuan Meteorological Bureau,Yan'an 727400,Shaanxi,China)
关键词：
North Shaanxi;atmospheric nitrogen deposition;wet deposition;dry deposition
摘  要：
To investigate the farmland soil nitrogen input from atmospheric dry and wet deposition,a 1-year observation was conducted in the Yulin and Luochuan areas of North Shaanxi Province from June 2007 to May 2008.The total inorganic nitrogen (TIN) deposition in Yulin and Luochuan was 22.17 and 16.95 kg·hm-2·a-1,among which,wet deposition accounted for 95.1% and 90.4%,while dry deposition accounted for 4.9% and 9.6%,respectively,illustrating that the nitrogen deposition in both Yulin and Luochuan was mainly come from wet deposition.In the TIN deposition,the amount of nitrate in Yulin and Luochuan was 12.22 and 9.24 kg·hm-2·a-1,accounting for 55.1% and 54.5%,respectively.The amount of wet deposition and the percentage of nitrate in TIN deposition were higher in Yulin than in Luochuan,because of the differences in pollution level,weather condition,and underlying surface characteristics.

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