APORTE ATMOSFÉRICO DE AMÔNIO, NITRATO E SULFATO EM ÁREA DE FLORESTA OMBRÓFILA DENSA MONTANA NA SERRA DOS ÓRGÃOS, RJ
APORTE ATMOSFÉRICO DE AMÔNIO, NITRATO E SULFATO EM ÁREA DE FLORESTA OMBRÓFILA DENSA MONTANA NA SERRA DOS ÓRGÃOS, RJ
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APORTE ATMOSFÉRICO DE AMÔNIO, NITRATO E SULFATO EM ARE DE FLORESTA OMBRÓFILA MONTANA NA SERRA DOS ORRGÓOS, RJ
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
Patrícia Alexandre de Souza
中科院分区：
文献类型：
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作者：
Renato De Aragão Ribeiro Rodrigues;W. Z. D. Mello;Patrícia Alexandre de Souza
对鄂尔多斯国家公园的干湿(尘)沉降进行了测量。VWM pH值为5.3。非海盐SO42-占总SO42-的97%。摩尔比[2(NSS-SO42-)+NO3-]/[NH4++H+]为1.1，表明pH主要受H_2SO_4、HNO_3和NH_3控制。NH_4~+、NO_3~-和NSS-SO_4~(2-)的湿沉降量分别为0.59、0.25和0.30kmolha~(-1)·a~(-1)。假设N的干沉积可占其总(干+湿)沉积的30-50%，则后者估计为1.2-1.7kmolha-1yr-1(17-24 kg N ha-1yr-1)。
Wet and dry (dust) deposition was measured in the Serra dos Orgaos National Park. VWM pH was 5.3. Non-sea-salt (nss) SO42- comprised 97% of total SO42-. The molar ratio [2(nss-SO42-) + NO3-]/[NH4+ + H+] was 1.1, suggesting that pH is predominantly controlled by H2SO4, HNO3, and NH3. Wet deposition of NH4+, NO3-, and nss-SO42- was respectively 0.59, 0.25, and 0.30 kmol ha-1 yr-1. Assuming that dry deposition of N can comprise 30-50% of its total (dry + wet) deposition, the latter is estimated to be 1.2-1.7 kmol ha-1 yr-1 (17-24 kg N ha-1 yr-1).