对虾养殖生态系中有机碳的初步研究

Preliminary Study on Organic Carbon in Shrimp Cultural Ecosystems

对于围隔养殖对虾生态系中有机碳的变动进行了研究 ,结果表明 :溶解有机碳 (DOC)含量波动在 5 .2 99～ 13.39mg/ L之间 ,平均为 8.5 3mg/ L± 2 .2 5 mg/ L;颗粒有机碳 (POC)含量波动在0 .6 5～ 6 .6 3mg/ L之间 ,平均为 3.2 5 mg/ L± 1.76 mg/ L;总有机碳 (TOC)含量波动在 6 .92～ 2 0 .0 2mg/ L之间 ,平均为 11.78mg/ L± 3.82 mg/ L ;其中 DOC∶ POC∶ TOC为 0 .72∶ 0 .2 8∶ 1。各种有机碳组分的含量明显高于自然海水中各种有机碳的含量 ;各种有机碳组分的含量在养殖期间总体上呈上升的趋势 ;其变化与 DCOD的变化呈显著线性正相关的关系。

This paper mainly dealt with the organic carbon variation in shrimp enclosure cultural ecosystems. The results showed that: The concentration of dissolved organic carbon(DOC) varied from 5.299 to 13.39mg/L with the average of (8.53±2.25)mg/L. The concentration of particulate organic carbon(POC) varied from 0.646 to 6.626 mg/L with the average of (3.25±1.76)mg/L. The concentration of total organic carbon(TOC) varied from 6.916 to 20.016mg/L with the average of (11.781±3.82)mg/L; DOC∶POC∶TOC=0.72∶0.28∶1. The concentrations of organic carbon in the shrimp enclosure cultural ecosystems were obviously larger than nature seawater. They had been mainly increasing during the shrimp growing out period, and they were obviously positively correlated with DCOD.