中国海洋大学学报（自然科学版）2009，Vol.39Issue(4)：781-788,8.
近30年胶州湾海水中主要化学污染物时空变化特征
Spatiotemporal Changes of Main Chemical Pollutants for the Last Thirty Years in the Jiaozhou Bay
摘要
Abstract
Based on the investigation information for the last thirty years in the Jiaozhou Bay, the variation trend of annual concentration and spatial distribution of DIN, PO4-P, petroleum hydrocarbon(pHs) and COD are analyzed, and nutritional condition index(E) is applied to assess the eutrophication condition. The results shows that the annual mean DIN concentration is in rising trend basically from 1980s to the 21st century, varying from 6.14 to 33.19 μmol·dm-3; the PO4-P and pHs concentrations are in rising first and then declining, the ranges of PO4-P and pHs are from 0.32 to 0.92 μmol·dm-3 and from 28.26 to 79.13 μg·dm-3 in turn; while COD declining first and then rising, varying from 0.57 to 1.60 mg·dm-3. The spatial distribution of DIN and PO4-P shows that it is higher in the northeastern than the southwestern of the Bay in the 1980s and 1990s, but it becomes higher in the west when coming into the 21st century. The spatial distribution of pHs shows that it is higher in the east than the west, while to COD it is higher in the northeastern and northwestern and decreases gradually towards the inner bay and South. The nutritional condition index shows that it is less than 1 in 1980s, it means that it has not become eutrophication in Jiaozhou Bay. It becomes eutrophication from the early 1990s and more serious to now. The distribution of E shows that the seawater area of Moshuihe estuary belongs to the most eutrophic area and seawater area of Daguhe estuary also belongs to eutrophic area, while it is less polluted in inner Bay. So the pollution is largely deduced by land-based wastewater discharge.关键词
化学污染物/年均浓度/富营养化/胶州湾Key words
chemical pollutants/annual concentration/eutrophication/Jiaozhou Bay分类
海洋科学引用本文复制引用
钱国栋,汉红燕,刘静,梁生康,石晓勇,王修林..近30年胶州湾海水中主要化学污染物时空变化特征[J].中国海洋大学学报（自然科学版）,2009,39(4):781-788,8.基金项目
国家908专项(908-02-02-03 （）
908-02-02-02) （）
海洋公益公益性行业科研专项:入海污染物总量控制和减排技术集成和示范项目(200805065)资助 （200805065）
