Yue Ping, Song Wei, Li Kai-Hui, He Gui-Xiang, Wang Xiao-Li, Liu Xue-Jun
Ying Yong Sheng Tai Xue Bao. 2014 Jun;25(6):1592-8.
N deposition has increased significantly with economic development and intensive human activities in China and has affected natural ecosystems in remote areas. To evaluate the atmospheric N deposition of the Bayinbuluk alpine grassland of the central Tianshan Mountains, the dry and wet N depositions were monitored from May 2010 to December 2011. Fluxes of HNO3, NH3, NO2, particulate ammonium and nitrate (pNH4+ and pNO3-) averaged at 1.47, 0.68, 0.13, 0.23 and 0.25 kg N x hm(-2) x a(-1), respectively. Wet depositions of NH(4+)-N and NO(3-)-N were 2.47 and 1.59 kg N x hm(-2) x a(-1), respectively. Total atmospheric inorganic N deposition fluxes averaged at 6.82 kg N x hm(-2) x a(-1), and the wet and dry depositions were 4.06 and 2.76 kg N x hm(-2) x a(-1), respectively. Nitrogen deposition fluxes showed a significant seasonal change, with 72.1% of dry N deposition occurring in spring and summer, and 78.3% of wet N deposition concentrating in summer and autumn.
随着中国经济发展和人类活动的加剧，氮沉降显著增加，并对偏远地区的自然生态系统产生了影响。为了评估天山中部巴音布鲁克高寒草原的大气氮沉降，于2010年5月至2011年12月对干湿氮沉降进行了监测。HNO₃、NH₃、NO₂、颗粒态铵和硝酸盐（pNH₄⁺和pNO₃⁻）的通量平均分别为1.47、0.68、0.13、0.23和0.25 kg N·hm⁻²·a⁻¹。NH₄⁺-N和NO₃⁻-N的湿沉降分别为2.47和1.59 kg N·hm⁻²·a⁻¹。大气无机氮总沉降通量平均为6.82 kg N·hm⁻²·a⁻¹，其中湿沉降和干沉降分别为4.06和2.76 kg N·hm⁻²·a⁻¹。氮沉降通量呈现出显著的季节变化，72.1%的干氮沉降发生在春季和夏季，78.3%的湿氮沉降集中在夏季和秋季。
