The space-time variations characteristics of seawater quality of mariculture area in Hebei Provinceareas in Hebei Province ocean
河北省海水养殖区水质时空变化特征

Mariculture is an important pillar industry of aquaculture in Hebei Province. In order to preserve the ecological environment of mariculture area and ensure the sustaining development of the mariculture, with the fuzzy synthetic evaluation method and the single factor pollution index method, the study on space-time variation characteristics and assessment of the seawater quality were carried out in mariculture area of Hebei Province according to the monitoring data from 2000 to 2010. The results showed that in recent years, the seawater quality of mariculture area in Hebei Prvince has been becoming better. The seawater quality of mariculture area in Qinhuangdao and Tangshan could meet the requirements of aquaculture water, but the seawater quality in Huanghua was polluted seriously and could not meet the requirements of aquaculture water. The major polltants of seawater in Hebei Province mariculture area were and DIN, followed by Pb and Hg.