Spatial distribution of phosphorus forms in sediments with different distances to the estuary of the Dianchi Lake,China  

作　　者：Shaoyong LU Xiangcan JIN Fengchang WU Jianning GUO Jing SI 

机构地区：[1]Research Center of Lake Eco-environment,Chinese Research Academy of Environmental Sciences,Beijing 100012,China [2]Department of Environmental Engineering,Jilin Architectural and Civil Engineering Institute,Changchun 130021,China

出　　处：《Frontiers of Environmental Science & Engineering》2010年第3期295-300,共6页环境科学与工程前沿（英文）

基　　金：the National Basic Research Program of China(973 Program)(Grant No.2008CB418200);the National High Technology Research and Development Program of China(863 Program)(Grant Nos.2008ZX07101 and 2005AA60101005。

摘　　要：Effects of human activity on the distribution of phosphorus(P)forms were investigated for the sediments and porewaters in Daqinghe Estuary of Dianchi Lake,China.The concentrations of total P(TP),inorganic-P(IP),and organic-P(Org-P),and the ratio of iron-bound P(Fe-P)/calcium-bound P(Ca-P)in the sediments decreased with the increasing distance from the sampling site to the estuary.This is probably due to the flocculant materials,e.g.,ferric and aluminous salts,usually being added in the wastewater treatment processes.The concentration of ammonia in the sediment porewaters significantly decreased with the increasing distance from the sampling site to the estuary.Both concentrations of total nitrogen and nitrogen in the sediment porewaters decreased to some content with the increasing distance from the sampling site to the estuary.However,the concentrations of nitrate,dissolved total P(DTP),and TP did not have strong relationship with the distances from the sampling sites to the estuary.Pollution load and water quantity also had an important influence on the concentrations of P in sediments and its interstitial water in estuary sedimentary area.

关 键 词：estuary sedimentary area phosphorus(P) spatial distribution human activity the Dianchi Lake 

分 类 号：X13[环境科学与工程—环境科学]