湖泊科学2012，Vol.24Issue(5)：789-796,8.
贵州红枫湖沉积物磷赋存形态的空间变化特征
Spatial distribution characteristics of phosphorus forms in sediment of Lake Hongfeng, Guizhou Province
摘要
Abstract
Lake Hongfeng is a man-made deep lake. Phosphorus of sediment samples that were collected from representative six water areas were analyzed. Water temperature and dissolved oxygen were investigated four times in the field by multi-parameter water quality observation analyzer YSI. The results showed that total phosphorus in sediment was generally high. The average value of total phosphorus in surface sediment was more than 1500 mg/kg, significantly higher than that in the bottom sediments. NaOH-SRP and rest-P were the main forms of phosphorus in sediment. NH4C1-P, BD-P and HC1-P contents decreased with depth, and rest-P contents were stabile in vertical. Human activities (e. g. chemical waste water and artificial fish) greatly increased NaOH-SRP contents in sediment. Temperature of bottom water was between 14. 5 ?23. 5X1 , and the maximum temperature differences was 9. 9X^. in different seasons. The bottom water was seasonal anoxic or anaerobic, which may result in changes of sediment phosphorus forms. Risk of endogenous phosphorus release increased due to anoxic condition of sediment-water interface in deep lake.关键词
红枫湖/沉积物/磷形态/温度/溶解氧Key words
Lake Hongfeng/ sediment/ phosphorus forms/ temperature/ dissolved oxygen引用本文复制引用
王敬富,陈敬安,曾艳,杨永琼,杨海全..贵州红枫湖沉积物磷赋存形态的空间变化特征[J].湖泊科学,2012,24(5):789-796,8.基金项目
国家自然科学基金项目(41021062)、国家科技支撑计划项目(2011BAC02B0201)和贵阳市科技计划项目联合资助. （41021062）
