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于1991-1995年间5次在云贵高原泸沽湖、洱海湖和贵州阿哈湖、百花湖的湖心采集沉积物柱芯、界面水和湖水样品,通过其pH值和HCO-3浓度剖面及界面碱度扩散通量的研究,首次定量评估高原湖泊界面扩散作用上覆水体碱度的影响程度。研究结果表明,云贵高原某些湖水寄宿时间相对较长、湖水深度相对小的湖泊,界面扩散作用是水体碱度的重要来源之一;湖水寄宿时间较短、深度较小的湖泊,界面扩散对上覆水体的影响可以忽略不计。
Sediment column core, interface water and lake water samples were collected from the lakes of Lake Lugu, Erhai Lake, Lake Ahu and Baihua Lake in Yunnan-Guizhou Plateau during 1991-1995. Through sedimentation of pH and HCO-3 concentration profiles and interface Alkalinity diffusion flux study, the first quantitative assessment of plateau lake interface diffusion overlying water alkalinity degree of influence. The results show that some lakes in the Yunnan-Guizhou Plateau have relatively long boarding time and lakes with relatively small water depth are one of the important sources of alkalinity in the lakes. In the lakes with short boarding lakes and lakes, interface diffusion The impact of overlying water is negligible.