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根据 1998年 7月的调查资料，比较了南海东北部柘林湾网箱养殖场不同区域环境因子的强度。结果表明部分环境因子在不同区域的强度有明显差异：海水 DO（Δ =1.68 mg/L）、 O2％（Δ =0.4倍）、 DIN（Δ =1.3倍）、（Δ =2.4倍）和（Δ =9.4倍）在网箱区明显低于对照区；海水（Δ =1倍）和（Δ =0.8倍）、沉积物中（Δ =14倍）、硫化物（Δ =7.7倍）和有机碳（Δ =0.5倍）在网箱区明显高于对照区。从网箱区内到其周围约 3.5 km范围内，海水中 DO、 O2％、 DIN、 pH与网箱区的距离较显著地正相关（ p<0.10），海水、底质、底质硫化物与距离较显著地负相关（ p<0.10）。不同区域内水质的变化与某些污染物强度的变化趋势基本一致。
According to the survey data from July 1998, the intensity of environmental factors in different regions of Zhelin Bay cage farm in northeastern South China Sea was compared. The results showed that there were significant differences in the intensity of some environmental factors in different regions: DO (Δ = 1.68 mg / L), O2% (Δ = 0.4 times), DIN Δ = 9.4 times) was significantly lower in the cage area than in the control area; seawater (Δ = 1 time) and (Δ = 0.8 times) Carbon (Δ = 0.5 times) was significantly higher in the cage area than in the control area. There was a significant positive correlation (p <0.10) between the DO, O2%, DIN, pH and the cage area in the seawater within about 3.5 km from the area of the cage area (p <0.10). Seawater, sediment, Negatively correlated with distance (p <0.10). The change of water quality in different regions is consistent with that of some pollutants.