摘要
通过对长江河口岸带柱状沉积物中P的分析 ,揭示了沉积物中P的存在形态和分布特征。柱状沉积物中P的存在形态主要有DP、Al P、Fe P、Ca P和OP等 5种 ,其中以Ca P(约占TP的 2 8%～ 5 2 % )和OP(约占TP的 43%～ 6 8% )为主。研究发现 ,在近排污口的柱状沉积物中Al P和有机碳 (TOC)具有相似的变化趋势 ,且Al P含量明显高于非排污口处的朝阳柱样 ,反映了柱状沉积物中各形态P的分布特征受人类活动的影响比较明显。此外 。
Species of phosphorus and the property of their distribution with depth are discussed by comparing Shidongkou to Chaoyang core sediments in this paper. Phosphorus in the core sediments from Changjiang Estuary mainly consists of DP, Al P, Fe P, Ca P and OP, predominating OP and Ca P. It is founded there is obvious coupling between Al P and TOC in core sediments near sewage discharge outlet, which indicates human activities have an obvious effect on the existing species of phosphorus in sediments. In addition, this finding shows that the distribution of phosphorus species is markedly subjected to sedimentation rate in vertical core sediments from slightly and highly siltation in the coastal areas.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2001年第2期7-12,共6页
Marine Environmental Science
基金
国家自然科学基金!资助项目 (4980 10 18
4977110 1)
教育部高等学校骨干教师计划资助!项目
关键词
长江口岸带
柱状沉积物
磷形态
环境意义
河口沉积物
Changjiang Estuary and coastal areas
core sediments
species of phosphorus
environmental significance
