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引用本文:王云飞,朱育新,潘红玺,尹宇.云南腾冲青海——酸性湖泊的环境特征.湖泊科学,2002,14(2):117-124. DOI:10.18307/2002.0204
WANG Yunfei,ZHU Yuxin,PAN Hongxi,YIN Yu.Environmental Characteristics of An Acid Qinghai Lake in Tengchong, Yunnan Province. J. Lake Sci.2002,14(2):117-124. DOI:10.18307/2002.0204
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云南腾冲青海——酸性湖泊的环境特征
王云飞, 朱育新, 潘红玺, 尹宇
中国科学院南京地理与湖泊研究所, 南京210008
摘要:
火山口湖成因和持续酸性地下水补给是腾冲青海呈现酸性湖泊环境的地质基础.通过对青海环境的实际调查和水、土、生物样品的分析、鉴定,结果表明:湖水具较低pH值、极低的阳离子组成和矿化度;沉积物中Ca、Mg、Al、Fe等元素有明显流失;湖泊生物种群少且生物量低,缺失蓝藻和腹足类、瓣鳃类、甲壳类动物等为其区别于一般中、碱性湖泊最显著的特点.酸性水介质湖泊系统元素地球化学行为的变化及其对生物的影响——生物贫化和耐酸种扩张,既是腾冲青海的基本特点,也是酸性湖泊环境形成的动力机制.
关键词:  环境特点  酸性湖  腾冲青海
DOI:10.18307/2002.0204
分类号:
基金项目:国家自然科学基金项目(49871075);中国科学院湖沼专项(KZ951-B1-205)联合资助
Environmental Characteristics of An Acid Qinghai Lake in Tengchong, Yunnan Province
WANG Yunfei, ZHU Yuxin, PAN Hongxi, YIN Yu
Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 210008, P.R.China
Abstract:
Qinghai Lake is an acid lake and located in Tengchong County, Yunnan province.Qinghai Lake is a crater lake with continuously acid groundwater supply, which is the geological foundation of the acid lake.We analyzed water, soil, sediment and biological samples of Qinghai Lake.As result showing, the water has low pH value, very low cation concentration and mineralization degree, and obviously migration of element Ca, Mg, Al and Fe in sediment.Few species, low biomass and lack of blue-green algae, Gastropoda, Lamellibranchia and Crustacea are most notable characteristics distinguished from general neutral and alkaline lakes.Change of element geochemistry behavior of acid aqueous medium in a lake, and its impact on organisms cause the decrease of acid sensitive species and the increase of acid tolerant species, these are the basic characteristics of Qinghai Lake and dynamic mechanism of forming acid lake environment.
Key words:  Environment characteristics  acid lake  Qinghai Lake in Tengchong
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