上海海洋大学学报2018，Vol.27Issue(1)：106-114,9.DOI:10.12024/jsou.20160401740
淀山湖河蚬与翘嘴红鲌国家级水产种质资源保护区水质评价及初级生产力时空变化特征
The spatiotemporal variations analysis of water quality and primary productivity in Dianshan Lake National Aquatic Germplasm Resources Conservation Area of Asian Clam and Erythroculter Ilishaeformis
摘要
Abstract
In order to investigate the water quality and primary productivity of national aquatic germplasm resources conservation area of asian clam and erythroculter ilishaeformis in Dianshan Lake,ten sampling points were chosed in the conservation area in 2015. The spatiotemporal variations of nutrients,chlorophyll-a (Chl. a)and primary productivity,and the relationship between Chl. a and environmental factors were analyzed by comprehensive nutrition status assessment and correlation analysis. The results showed that the concentrations of nutrients,COD Mn and Chl. a had a significant difference. The results in spring and summer were higher than autumn and winter. But there was no significant difference in the test area compared with the core area. The N/ P (nitrogen and phosphorus)ratios were between 5. 30 - 64. 66 and they are suitable for the algal growth. The comprehensive nutrition state index in conservation area was between 46. 67 to 60. 70. It showed the water columns in conservation area were in mild eutrophication state. The variations of Chl. a concentration and primary productivity were between 6. 06 to 29. 37 mg / m3 and 65. 18 to 1423. 11 mg /(m3 ·d),respectively. The spatiotemporal variations of them were similar. There was a significant difference between the seasons,but there was no significant difference in the test area compared with the core area. The Pearson Correlation Analysis showed there was a significant correlation between the concentrations of Chl. a and TN,TP. The correlation index (R2 )of them were 0. 501 and 0. 432,respectively. The concentrations of nitrogen and phosphorus were higher. They could lead to the water-bloom occurrence in this conservation area.关键词
保护区/时空变化/营养元素/叶绿素a/初级生产力Key words
conservation area/spatiotemporal variations/nutrients/Chl. a/primary productivity分类
资源环境引用本文复制引用
周彦锋,徐东坡,王欢,刘凯,尤洋,卜建平..淀山湖河蚬与翘嘴红鲌国家级水产种质资源保护区水质评价及初级生产力时空变化特征[J].上海海洋大学学报,2018,27(1):106-114,9.基金项目
公益性行业(农业)科研专项(201303056-02) （农业）
中央级公益性科研院所基本科研业务费专项资金项目(2015JBFM03) （2015JBFM03）
