Wang Xiao-Zhi, Yin Wei-Qin, Shan Yu-Hua, Feng Ke, Zhu Jian-Guo
College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225009, Jiangsu, China.
Ying Yong Sheng Tai Xue Bao. 2009 Oct;20(10):2487-92.
From June 2003 to May 2004, the precipitation at Changshu Agro-ecological Station (31 degrees 32'45" N, 120 degrees 41'57" E) of Chinese Academy of Sciences was collected to monitor its particle- and dissolved nitrogen and phosphorus concentrations, with the seasonal variation of nitrogen and phosphorus in wet deposition in Taihu Lake region investigated. The nitrogen input from wet deposition had an obvious seasonal variation, being higher in summer and spring and lower in autumn and winter. The ratios of dissolved nitrogen (DN) and particle nitrogen (PN) to total nitrogen (TN) in wet deposition were 88.2% and 11.8%, and those of dissolved phosphorus (DP) and particle phosphorus (PP) to total phosphorus (TP) were 53.3% and 46.7%, respectively. The amounts of nitrogen and phosphorus deposited into Taihu Lake region by light and medium precipitation were higher than those by heavy precipitation. The annual input of TN and TP from wet deposition was 30.2 kg x hm(-2) and 1.1 kg x hm(-2), respectively, and the DN concentration in all precipitation events as well as the DP concentration in 92.5% of precipitation events was higher than the thresholds of inland water eutrophication.
2003年6月至2004年5月，收集了中国科学院常熟农业生态站（北纬31°32′45″，东经120°41′57″）的降水，以监测其颗粒态和溶解态氮磷浓度，并研究太湖地区湿沉降中氮磷的季节变化。湿沉降的氮输入具有明显的季节变化，夏季和春季较高，秋季和冬季较低。湿沉降中溶解态氮（DN）和颗粒态氮（PN）占总氮（TN）的比例分别为88.2%和11.8%，溶解态磷（DP）和颗粒态磷（PP）占总磷（TP）的比例分别为53.3%和46.7%。太湖地区由小雨和中雨沉降的氮磷量高于大雨沉降的量。湿沉降中TN和TP的年输入量分别为30.2 kg·hm⁻²和1.1 kg·hm⁻²，所有降水事件中的DN浓度以及92.5%降水事件中的DP浓度均高于内陆水体富营养化阈值。
