内蒙古黑河下游木能诺尔湖泊沉积物记录的环境信息  

Information of Environmental Evolution Recorded by Munengnuor Lake Sediment in the Lower Reaches of Heihe River

作　　者：郑祥民[1] 王辉[1] 周立旻[1] 许健[2] 王永杰[1] 

机构地区：[1]华东师范大学地理信息科学教育部重点实验室,上海200062 [2]科学出版社上海办事处,上海200032

出　　处：《土壤通报》2009年第5期1189-1192,共4页Chinese Journal of Soil Science

基　　金：上海市优秀学科带头人项目(07XD14010);国家自然科学基金(40372135)

摘　　要：以内蒙古黑河下游木能诺尔湖底沉积物为研究对象,以磁化率、碳酸盐含量、粒度、总有机碳含量等参数为环境替代指标,结合史料记载研究了黑河下游额济纳地区气候环境的演化过程。结果表明,木能诺尔湖-B孔高分辨率地记录了额济纳地区短时间尺度的气候演变过程。近400余年来,额济纳地区130年相对湿润,280年干旱,气候以干旱为主,演化过程可分为9个阶段。影响湖泊演化的主要因素为气候冷暖干湿变化和人类活动,清朝康乾之后,人类活动逐渐对流域生态环境产生较大影响。In this work, Paleo-environmental proxies such as magnetic susceptibility, carbonate content, grain size, total organic carbon content were investigated in the Munengnuor lake sediment in the lower reaches of Heihe river. Combined with the historical records the processes of the climate and environment changes of Ejina region in the lower reaches of Heihe river were discussed. The results showed that Munengnuor lake - B core contained the high-resolution climate change processes information of Ejina region in short time-scale. During the nearly 400 years, there was 130 years with humid climate relatively, 280 years with drought, which could be divided into nine stages in Ejina region.Major impact factors of lake evolution were climate change and human activity. After the Kangxi and Qianlong period, Qing Dynasty, human activity produced substantial impacts on the ecological environment gradually.

关 键 词：环境演变 湖泊沉积 木能诺尔湖 

分 类 号：X820.3[环境科学与工程—环境工程]