Deng Jian-cai, Chen Qiao, Zhai Shui-jing, Yang Xu-chang, Han Hong-juan, Hu Wei-ping
State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, China.
Huan Jing Ke Xue. 2008 Dec;29(12):3382-6.
The characteristics of spatial distribution of nitrogen and phosphorus in water were studied. The results showed that concentrations of total nitrogen/phosphorus in water from Meiliang Bay, Zhusan Bay, Gonghu Bay, West and Central Taihu Lake were obviously higher than those from any other region of Taihu Lake. The spatial distribution of dissolved nitrogen/phosphorus and detritus nitrogen/phosphorus was consistent with that of total nitrogen/phosphorus. The concentrations of dissolved nitrogen and detritus nitrogen significantly correlated with those of total nitrogen with rDN = 0.8192 and rDeN = 0.6969, respectively; the concentrations of dissolved and detritus phosphorus in water also significantly correlated with that of total phosphorus with rDP = 0.7477 and rDeP = 0.9260, respectively. The discrepancy in spatial distribution of chlorophyll a (Chla) in water was distinctly obvious, the highest level appeared in West Taihu Lake (179.2 microg x L(-1) +/- 25.9 microg x L(-1)), and the lowest in East Taihu Lake (11.3 microg x L(-1) +/- 2.7 microg x L(-1)). There were significantly linear relationships between total nitrogen, detritus nitrogen, total phosphorus, dissolved phosphorus, detritus phosphorus, permanganate index, pH value and suspended solids and the content of Chla with rTN = 0.6622, rDeN = 0.8739, rTP = 0.8130, rDP = 0.4077 and rDeP = 0.8781, rCOD = 0.8689, rpH = 0.5173 and rSS = 0.5334, respectively; while dissolved nitrogen, electric conductivity and alkalinity did not affect Chla in water from Taihu Lake.
研究了水体中氮磷的空间分布特征。结果表明，梅梁湾、竺山湾、贡湖湾、太湖西部和中部水体中的总氮/磷浓度明显高于太湖其他区域。溶解态氮/磷和碎屑态氮/磷的空间分布与总氮/磷一致。溶解态氮和碎屑态氮的浓度与总氮浓度显著相关，rDN分别为0.8192和rDeN为0.6969；水体中溶解态和碎屑态磷的浓度也与总磷浓度显著相关，rDP分别为0.7477和rDeP为0.9260。水体中叶绿素a（Chla）的空间分布差异明显，最高值出现在太湖西部（179.2μg·L⁻¹±25.9μg·L⁻¹），最低值出现在太湖东部（11.3μg·L⁻¹±2.7μg·L⁻¹）。总氮、碎屑态氮、总磷、溶解态磷、碎屑态磷、高锰酸盐指数、pH值和悬浮固体与Chla含量之间存在显著的线性关系，rTN分别为0.6622、rDeN为0.8739、rTP为0.8130、rDP为0.4077、rDeP为0.8781、rCOD为0.8689、rpH为0.5173和rSS为0.5334；而溶解态氮、电导率和碱度对太湖水体中的Chla没有影响。
