农业环境科学学报2012，Vol.31Issue(7)：1387-1392,6.
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
摘要
Abstract
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 variations 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 phosphatase 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Key words
Luoma Lake/ sediment/ TN and TP/ alkaline phosphatase/ seasonal variation分类
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徐德兰,万蕾,高明侠,宋新恒,董潇,韩宝平..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[J].农业环境科学学报,2012,31(7):1387-1392,6.基金项目
江苏省住房与城乡建设厅科技计划项目(200906170001) （200906170001）
住房与城乡建设部科技资助项目(2010-S1-13) （2010-S1-13）
