杭州西湖水体生态环境参数的相互关系  

The inter relationship between the ecological environment parameters in the West Lake of Hangzhou

作　　者：钱天鸣[1] 陈超[1] 程咏 

机构地区：[1]杭州市环境监测站,浙江杭州310007

出　　处：《中国环境监测》2002年第3期41-44,共4页Environmental Monitoring in China

摘　　要：采用 2 0 0 0年的西湖常规监测数据 ,分析了西湖水体中生态环境特征参数的季节变化和相互关系。分析表明 ,西湖水体各生态环境参数 ,除总氮外 ,均呈现出明显的季节性变化 ,总磷、溶性正磷酸盐、叶绿素 a和藻类季节变化一致 ,在夏季形成高峰 ,冬季最低 ;三无机氮高峰值出现在冬季 ,夏季含量为全年最低。 2 0 0 0年西湖水体总氮年均值为 2 .0 5 m g/L ,总磷年均值为 0 .12 6mg/L ,N/P大于 16,西湖属于磷控制型富营养湖泊。通过相关分析 ,从另一方面说明磷是西湖水体的限制因子 ;硝酸盐对西湖沉积物和湖水之间的磷酸盐平衡有一定的影响 ;Adopting the conventional monitoring data of the West Lake for 2 000, the thesis analyzes the seasonal change of the ecological environment param eters of the lake and their inter relationship The analysis demonstrates that all the parameters of the lake, except that of the total nitrogen, show a remark able seasonal change The parameters of the total phosphorus, soluble or the ph osphate, Chlorophyll-a and alga all reach their highest point in summer and the ir lowest point in the winter, while that of the three forms of inorganic nitrog en reaches its highest point in winter and its lowest point in summer The annu al value of the total Nitrogen in the lake for 2000 is 2 05mg/L, that of the to tal phosphorus 0 126mg/L and that of N/P over 16, which speaks well of the fact that the West Lake is a phosphorus-dominant and eutrophic lake Through relev ant analysis, the thesis shows in another perspective that phosphorus is a restr icting factor in the water of the lake, that nitrate has some effect upon the ba lance between the deposit of the lake and the phosphate in the water, and that n itrate may checks the growth and reproduction of the phytoplankton in the water

关 键 词：西湖 营养盐 生态环境参数 相关分析 叶绿素A 藻类 杭州市 水体监测 水质评价 

分 类 号：X824[环境科学与工程—环境工程] X832