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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。
Taking the sediments of Muneon Lake in the lower reaches of the Heihe River, Inner Mongolia as the research object, the environmental change of the Ejina region in the lower reaches of the Heihe River was studied based on the historical records with the parameters of magnetic susceptibility, carbonate content, grain size and total organic carbon content . The results show that the Munengnuoer Lake-B well recorded the climatic evolution on a short time scale in the Ejin area with high resolution. In the past 400 years, the Ejina area has been relatively humid for 130 years, with 280 years of drought and the climate mainly characterized by drought. Its evolution can be divided into 9 stages. The main factors influencing the evolution of lakes are the climate changes, wet and dry changes and human activities. After the Qing dynasty, the human activities have a great impact on the ecological environment of the river basins.