Ocean acidification has emerged as a major challenge affecting the development of the marine aquaculture. Seasonal variations of seawater pH and aragonite saturation (Ω_arag) were investigated in the Muping Marine Ranch, Yantai. The results showed that the seasonal variations of pH and Ω_arag were distinct. The temperature exerted opposite effects on pH and Ω_arag and played a dominant role in pH variation, while limited role in Ω_arag. The air-sea exchange had a syntropic effect on pH and Ω_arag but less impact on their seasonal variations. Biological activities affected seasonal variations of surface seawater pH and Ω_arag, but they largely canceled each other out with other non-temperature effects; while bottom seawater Ω_arag was mainly controlled by biological respiration in summer. This study demonstrates that pH is primarily controlled by seasonal temperature changes, whereas Ω_arag would be a better indicator for ocean acidification caused by non-temperature processes.

海洋酸化已成为影响海水养殖业发展的重大挑战。在烟台市牟平海洋牧场调查了海水 pH 值和文石饱和度 (Ω _{arag ) 的季节性变化。}结果表明，pH和Ωarag的季节变化_明显。温度对pH和Ω _{arag 的}影响相反，对pH的变化起主导作用，对Ω _{arag 的}作用有限。海气交换对 pH 和 Ω _arag有同变效应，但对它们的季节变化影响较小。_{生物活动影响地表海水 pH 值和 Ω arag}的季节性变化，但它们在很大程度上与其他非温度效应相互抵消；而底层海水Ωarag_在夏季主要受生物呼吸控制。这项研究表明，pH 值主要受季节性温度变化的控制，而 Ω _arag是非温度过程引起的海洋酸化的更好指标。