骆马湖东部沉积物中氮磷含量和碱性磷酸酶活性季节变化  

Seasonal Variations of Nitrogen and Phosphorus Content and Alkaline Phosphatase Activity in Sediment in Eastern Shore of Luoma Lake,China

作　　者：徐德兰[1] 万蕾[1] 高明侠[1] 宋新恒[2] 董潇[2] 韩宝平[1] 

机构地区：[1]徐州工程学院环境工程学院,江苏徐州221008 [2]中国矿业大学江苏省资源环境信息工程重点实验室,江苏徐州221008

出　　处：《农业环境科学学报》2012年第7期1387-1392,共6页Journal of Agro-Environment Science

基　　金：江苏省住房与城乡建设厅科技计划项目(200906170001);住房与城乡建设部科技资助项目(2010-S1-13)

摘　　要：骆马湖是江苏省四大淡水湖泊之一,是南水北调东线工程重要蓄水库。2008年6月、10月及2009年4月对骆马湖东侧10个采样点的沉积物分层采样进行了分析,结果表明,骆马湖沉积物中,不同深度总氮含量变幅在0.13～2.91mg.g-1,平均(0.86±0.50)mg.g-1,季节变化不显著;总磷含量变幅为0.03～0.41mg.g-1,平均(0.19±0.10)mg.g-1,春季>夏季>秋季,季节变化显著;碱性磷酸酶活性最高为592.39mg.kg-1.h-1,最低为44.59mg.kg-1.h-1,平均(233.83±132.70)mg.kg-1.h-1,春季>夏季>秋季,季节变化显著,与总磷含量呈正相关。研究结果可初步揭示骆马湖沉积物中氮、磷和碱性磷酸酶的分布状况、变化规律,为骆马湖的治理与管理提供科学依据,为南水北调过水湖泊的水质安全问题提供参考。Luoma Lake is one of the four largest freshwater lakes in Jiangsu Province, China, and an important reservoir for the Eastern Route of the South-to-North Water Diversion Project. The stratification sediment samplings at 10 monitoring points off eastern shore of Luoma Lake were taken and analysed in June and October, 2008, and April 2009. The seasonal variations in nitrogen and phosphorus content and activity of alkaline phosphatase was examined, and the relevance between phosphorus and alkaline phosphatase activity was analysed. Total nitrogen content in lake sediment at different depth varied from 0.13 mg.g^-1 to 2.91 mg.g^-1, averaged （0.86±0.50） mg.g^-1; No significant seasonal vari- ations in total nitrogen content was detected. Total phosphorus content at different depth varied from 0.03 mg.g^-1 to 0.41 mg.g^-1, averaged （0.19±0.10）mg.g^-1,with the seasonal ranking of spring〉summer〉autumn（P〈0.05 ）. The alkaline phospbatase activity varied between 592.39 mg. kg^-1.h^-1 and 44.59 mg. kg^-1.h^-1, averaged （233.83 ± 132.70 ）mg. kg^-1. h^-1, with the ranking of spring 〉 summer 〉 autumn （P〈0.05）. Total phosphorus content was positively related to alkaline phosphatase activity. Findings reveal the spatial and temporal distribution of nitrogen, phosphorus and alkaline phosphatase activity in sediment in the Luoma Lake, and provide baseline data for scientific decision make for the management of the lake.

关 键 词：骆马湖 沉积物 氮磷 碱性磷酸酶 季节变化 

分 类 号：X524[环境科学与工程—环境工程]