摘要
在对星云湖的近现代沉积物进行粒度、稳定同位素等测试分析的基础上,综合对比了多项环境指标,并从自然变化和人为影响2个方面揭示湖泊环境演化的动态过程和动力学机制以及各环境要素的内在联系。研究表明该地区近200 a来环境及生态演化具有以下区域性特点:19世纪初期气候较为温暖干旱,之后向温凉湿润转变,20世纪80年代开始,湖泊出现富营养化,1998年以来气温处于回升状态,现在正处于暖干气候阶段,人类活动正在日益深刻地影响着湖泊的环境演化。
This paper focuses on the granularity and stable isotope of recent sediment in Xingyun Lake,Yunan Province. The result indicates the dynamic process and mechanisms of the environmental evolution and the internal relationship of the environmental factors by natural changes and human effects. Furthermore, it presents the regional characteristics of the environment and ecology evolution, the climate as warm and dry in the early 19 century, and then it became colder and wetter. The lake has been eutrophic since 1980s and the temperature has been rising since 1998. The result suggests that human activity is increasingly and profoundly influencing the environmental evolution of the lake.
出处
《地质科技情报》
CAS
CSCD
北大核心
2006年第3期8-12,共5页
Geological Science and Technology Information
基金
国家自然科学基金重点资助项目(40232025)
关键词
现代湖泊
环境演化
粒度
同位素
星云湖
云南
modern laker environment evolution
granularity
stable isotope
Xingyun Lake
Yunnan Province
