腾格里沙漠湖泊群小气候特征及其对气候变化的响应  

Microclimate characteristics of Tengger Desert lakes and its response to climate change

作　　者：陈阳 吕萍 曹敏 夏子书 马芳 余军林 Chen Yang;Lv Ping;Cao Min;Xia Zishu;Ma Fang;Yu Junlin(School of Geography and Tourism,Shaanxi Normal University,Xi'an 710119,China)

机构地区：[1]陕西师范大学地理科学与旅游学院,陕西西安710119

出　　处：《中国沙漠》2024年第2期231-238,共8页Journal of Desert Research

基　　金：国家自然科学基金项目(42271006);中央高校基本科研业务费专项项目(GK202202004)。

摘　　要：沙漠湖泊对气候变化的响应相较其他湖泊更敏感,同时湖泊也对局地气候有一定的反馈。当前国内对沙漠湖泊的研究主要在巴丹吉林沙漠,腾格里沙漠也存在诸多沙漠湖泊,然而相关研究较少。基于全球地表水体数据集分析腾格里沙漠湖泊区2001—2020年水体面积变化,结合该区域气温、风速、降水量、蒸发量等数据,利用趋势分析、灰色关联分析、皮尔逊相关性分析等方法,探究腾格里沙漠湖泊群对气候变化的响应机制及湖泊对局地气候的反馈作用。结果表明:(1)在2001—2020年,湖泊群面积处于波动状态,相对变率为10.05%~13.66%。(2)湖泊区年均气温和风速波动较小,年降水量和年蒸发量呈波动上升趋势。(3)湖泊对气候变化的响应表现为湖泊群面积与气温呈负相关,与降水量呈正相关;湖泊对局地气候的反馈表现为沙漠湖泊区的气温和降水量高于非湖泊区。Desert lakes are more sensitive to climate change than other lakes,and the lakes also have some feedback to local climate.At present,the research on desert lakes in China is mainly concentrated in the Badain Jaran Desert,and there are many desert lakes in the Tengger Desert,but there are relatively few related studies.Based on the global surface water dataset,this paper analyzes the changes of water area in the Tengger Desert lakes from 2001 to 2020,combined with the data of temperature,wind speed,precipitation and evaporation in the region,and uses trend analysis,grey correlation analysis and Pearson correlation analysis to explore the response mechanism of the Tengger Desert lakes to climate change and the feedback effect of the lakes on the local climate.The results showed that:(1)During the period from 2001 to 2020,the area of lakes in the Tengger Deser fluctuated,and the relative variability rate was 10.05%-13.66%.(2)The annual average temperature and wind speed in the Tengger Deser lake area fluctuated little,and the annual precipitation and annual evaporation showed a fluctuating upward trend.(3)The response of the Tengger Deser lakes to climate change showed that the area of lakes was negatively correlated with temperature and positively correlated with precipitation.The feedback of lakes to the local climate was that the temperature and precipitation in the desert lake area were higher than those in the non-lake area.

关 键 词：沙漠湖泊 Google Earth Engine 响应与反馈 腾格里沙漠 气候变化 

分 类 号：P931.3[天文地球—自然地理学]