2012年1—12月,對三都澳水產(chǎn)養(yǎng)殖區(qū)表層水水質(zhì)進行了調(diào)查.
January-December in two thousand and twelve, conducted a survey of surface water quality in Sandu Bay aquaculture zone.
結(jié)果顯示：該區(qū)域全年水溫在10.8—28.2℃；鹽度24.3—27.8,年平均25.82；pH7.92—8.23, 年平均8.03； 溶氧量5.06---7.49mgL﹣1, 年平均0.75mg.L﹣1；無機溶解氮含量在0.324—0.788mg.L﹣1, 年平均0.515mg.L﹣1; 活性磷酸鹽含量在0.028---0.082 mg.L﹣1,年平均0.050 mg.L﹣1,營養(yǎng)鹽結(jié)構(gòu)發(fā)生改變.
The results show: the area of the water temperature in the 10.8 - 28.2 ℃; salinity of 24.3 - 27.8, average 25.82; pH7.92 8.23, the annual average of 8.03; the amount of dissolved oxygen 5.06---7.49mgL1, annual average 0.75mg.L1; dissolved inorganic nitrogen in the 0.324 - 0.788mg.L1, annual average 0.515mg.L1; active phosphate content in 0.028---0.082 Mg.L1, annual average 0.050 Mg.L1, nutrition salt structure changes.
通過比較2000—2012年的變化情況發(fā)現(xiàn),2000---2012年,三都澳養(yǎng)殖區(qū)表層水的溶氧量呈下降趨勢,化學需氧量呈上升趨勢,無機溶解氮及活性磷酸鹽含量均上升.
Through compare the changes of 2000 - 2012 discovery, 2000---2012, dissolved oxygen in Sanduao farming area surface water decreased, the chemical oxygen demand is on the rise, inorganic dissolved nitrogen and active phosphate content increased.
結(jié)果表明,三都澳養(yǎng)殖區(qū)表層水長期處于中度富營養(yǎng)化狀態(tài).
The results show that, the surface water aquaculture area Australia Sandu in moderate eutrophication status.