摘要
青岛地区大气沉降物中溶解态碳水化合物(DCHO)平均浓度为 3. 3mg/L, 明显高于河水与海水。1991年6~12月DCHO通过大气向海洋输送的通量为 840.9mg/m2。 DCHO浓度与降雨量呈负相关,L DCHO浓度及沉降量的季节变化 明显。酸雨使得DCHO浓度升高,改变了碳水化合物在液固相间的分配。
The average concentration of dissolved carbohydrates (DCHO) in atmospheric deposition at Qingdao was 3. 3 mg/L, and particulate carbohydrate (PCHO) ranged from 1. 7 to 18. 1 mg/L, which are higher than those in the seawater and river water. The flux of DCHO is to the NW. Yellow Sea via atmosphere is estimated ca. 840. 9 mg/m2 from June, 1991 to December, 1991. Negative correlation between DCHO and rain fall (mm) was observed during our study, acid deposition corresponds to the higher DCHO level. Seasonal variations of both DCHO ed PCHO were observed. Ratio of DCHO and PCHO (Kd) averages 1. 5. It has: been recognized that the Kd falls with increasing of rain pH.
出处
《海洋科学》
CAS
CSCD
北大核心
1994年第3期49-53,共5页
Marine Sciences
基金
青年科学基金!(No.49000061)
国家教委资助
关键词
青岛地区
碳水化合物
大气
沉降物
Atmospheric deposition, Carbohydrate, Dissolved carbohydrate