浙江大学学报（理学版）2011，Vol.38Issue(5)：541-549,9.DOI:10.3785/j.issn.1008-9497.2011.05.013
春、夏季长江口溶解态重金属的时空分布特征及其污染评价
Spatial and temporal distribution and pollution evaluation of the dissolved heavy metals in the Changjiang Estuary
摘要
Abstract
Based on the data of surveys during spring (May) and summer (August) from the Changjiang Estuary in 2009, the distribution characteristics of the heavy metal (Cu, Zn, Pb, Cd, As, Hg) and its influencing mechanism were analyzed, and evaluated the level of pollution. The results showed that the concentrations and fluctuation degree of the heavy metal were different during spring and summer, the surface and bottom in the waters; the pollution level of Cu, Hg was highest, and the level of pollution in summer was higher than in spring; Cu, Pb were positively correlated with each other, Zn and salinity were negatively correlated with each other; the other heavy metals had no significant correlation with salinity, the distribution of the heavy metals could be classified as the striped high value coastal areas, high value of the contiguous of the coastal and offshore areas, high value of the divergence by the pattern of point; spatial and temporal distribution of the heavy metals was regulated by the characteristics of itself and environment factors, the formation of high value coastal areas was regulated by runoff and dilution of sea-water, the formation of high value offshore areas had correlation with sorption and agglomeration of suspended matters and give off of sediments.关键词
长江口/溶解态重金属/时空分布/污染评价Key words
Changjiang Estuary/ dissolved heavy metals/ spatial and temporal distribution/ pollution evaluation分类
资源环境引用本文复制引用
李磊,平仙隐,沈新强..春、夏季长江口溶解态重金属的时空分布特征及其污染评价[J].浙江大学学报（理学版）,2011,38(5):541-549,9.基金项目
国家重点基础研究发展计划资助项目(2010CB429005) （2010CB429005）
中央级公益性科研院所基本科研业务费专项资金(2007T11). （2007T11）
