论文部分内容阅读
在江苏南部海域设东沙、东凌、新港和吕四4个站位,对文蛤增养殖区底质泥样及底质水样的硫化物与COD进行调查分析.结果为:在文蛤生长繁殖的主要季节中,硫化物变化幅度在32.90~131.06 mg/kg之间,平均为81.71 mg/kg;COD变化幅度在1.54~20.59 mg/L之间,平均为4.13 mg/L.回归分析表明:各站位硫化物与COD有显著的相关性,但有间断特征.东沙和东凌两站位硫化物与COD的相关性在6月中旬和7月上旬之间出现一个间断期,在间断期前后时段中,硫化物与COD呈明显正相关;新港站位的间断期在6月上旬和7月上旬之间,时间稍长;吕四站位的间断期发生在7月上旬和7月中旬之间,发生时间稍晚.硫化物出现高值一般总是稍滞后于COD.
Ssangsha, Dongling, Xingang and Lu 4 stations were set up in the south of Jiangsu Province to investigate the sulphide and COD of sediment samples and sediment samples from clam increased culture zone.The results were as follows: In the main seasons, the variation of sulfides ranged from 32.90 to 131.06 mg / kg with an average of 81.71 mg / kg, and the range of COD variation was 1.54-20.59 mg / L with an average of 4.13 mg / L. Regression analysis showed that There was a significant correlation between Sulphide and COD in stations, but there was intermittent characteristics.The correlation between Sulphide and COD in Dongsha and Dongling stations appeared a discontinuous period between mid-June and early July, During the period, sulphide and COD showed a positive correlation; Xingang station intermittent period between early June and early July, a little longer; Lu four stations intermittent period occurred in early July and mid-July Occurred late, with high sulphide values generally always slightly behind COD.