摘要
根据1985－1987年和1989－1991年对青海湖及其水系的考查资料，研究其化学变化。结果表明，近30年来，青海湖及其入湖河流水系在萎缩过程中，水系总矿化度增加，逐渐成化。除采海水的Mg2+；耳海水的K+，入湖河流水的离子浓度减小外，青海湖、海及耳海水体中的Na+，Cl-，.离子增加速率较大，Mg2+等离子增加速率较小。海水体中各化学组分浓度增加速率较其它湖大。青海湖及海水型由变成耳海由变成；布哈河、哈尔盖河由变成黑马河由变成，倒淌河由变成，沙柳河、甘子河及泉吉河水型不变，仍为。
Qinghaihu Lake is China 's biggest inland brackish lake. Erhai Lake and Gahai Lake are its daughter lakes, About 50 rivers flow into the lake. As Qinghaihu Lake and rivers that flow into it shrink, the lake water salinity and mineralization have been increasing for nearly 30 years. Except for concentration of Mg2+ in Gahai Lake waters, K+, in Erhai Lake water and in rivers that flow into the lake decrease, all chemical component concentration in Qinghaihu Lake and that of other ions in the above-mentioned waters increase.But the annual average rate of increase is different, that of , Na+, Cl-, being higher, that of Ca2+, Mg2+ being lower. The increase rate of chemical component concentration in Gahai Lake waters is higher than that in other lakes. Water type has changed from to in Qinghaihu Lake and Gahai Lake waters,from to in Erhai Lake waters, from to in Buha and Hargai kivers, from to in Heima River and from to in Daotang River, and has been unchanged in Shaliu, Ganzi and Quanji Rivers.
出处
《海洋与湖沼》
CAS
CSCD
北大核心
1996年第2期125-131,共7页
Oceanologia Et Limnologia Sinica
基金
国家自然科学基金!4880103
关键词
青海湖
水系
化学变化
湖泊
Qinghaihu Lake River water system Chemical changes
