| 咸海面积萎缩对区域地表温度的影响 |
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| 引用本文： | 刘浩,王广军,谈明洪.咸海面积萎缩对区域地表温度的影响[J].武汉大学学报(信息科学版),2022,47(7):1113-1121. |
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| 作者姓名： | 刘浩 王广军 谈明洪 |
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| 作者单位： | 1.中国环境科学研究院，北京，100012 |
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| 基金项目： | 中国科学院战略性先导科技专项（A类）XDA20040400 |
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| 摘 要： | 水体对区域气候调节起着极其重要的作用，近几十年间咸海的水位剧烈下降和湖泊面积不断萎缩，势必会对咸海地区的气候产生重要影响，分析咸海地区地表温度的变化对于研究水体与其周边地区地表温度的关系具有重要意义。利用咸海地区中分辨率成像光谱仪（moderate resolution imaging spectroradiometer，MODIS）地表温度产品MOD11A2，基于空间分析法研究咸海面积变化对区域地表温度的影响和作用。结果表明:（1）相比于咸海表面温度，研究区内分别有93%和69%的研究区域日间和夜间地表温度均有上升的变化趋势；（2）咸海对区域地表温度直接影响范围大致在沿湖边界30 km的范围内；（3）随着咸海面积的快速萎缩，各土地覆盖类型区域与咸海的地表温差均呈现上升的变化趋势，咸海的区域温度调节功能逐渐减弱。
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| 关 键 词： | 咸海 地表温度 区域小气候 遥感 空间分析 |
| 收稿时间： | 2020-04-17 |
Influence of Aral Sea Area Shrinkage on Regional Land Surface Temperature |
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| Institution: | 1.Chinese Research Academy of Environmental Sciences, Beijing 100012, China2.School of Land Science and Technology, China University of Geosciences, Beijing 100083, China3.Institute of Geographical Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China4.Key Laboratory of Land Surface Pattern and Simulation, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | Objectives Water body plays an extremely important role in regional climate regulation. In recent decades, due to the unreasonable utilization and intensive development of the Aral Sea water resources by human beings, the water level and area of the Aral Sea have experienced a sharp decline and shrinkage, which inevitably has an important impact on the regional climate of the Aral Sea. So analyzing the changes of surface temperature variation in the Aral Sea region is of great significance for studying the relationship between the water body and the regional surface temperature. Methods In order to reveal the variation characteristics of surface temperature affected by the Aral Sea, the MODIS(moderate-resolution imaging spectroradiometer) surface temperature product (MOD11A2) in the Aral Sea area from 2000 to 2015 is used to analyze the affection on the regional surface temperature based on spatial analysis method. Firstly, the trend line analysis method is used to analyze the change trend of surface temperature in the Aral Sea and its surrounding areas from 2000 to 2015, so as to identify the approximate range of surface temperature affected. Secondly, the characteristics of surface temperaturechange with the increase of the distance from the Aral Sea are clarified by using the buffer zone analysis method and section line analysis method. Finally, based on the land use data, the change trend of surface temperature of the main land types in the Aral Sea is analyzed. Results Compared with the surface temperature of the Aral Sea, the surface temperature of 93% and 69% of the study area shows an upward trend respectively in the daytime and the nighttime during the study period from 2000 to 2015.The direct impact range that the Aral Sea on the regional surface temperature is roughly within 30 km along the lake boundary. As the area of the Aral Sea shrinks rapidly, the surface temperature difference between the various land cover types and the Aral Sea shows an increasing change trend. Conclusions Large lakes similar to the Aral Sea have obvious temperature regulating effect on the regional environment. The reduction of the Aral Sea area has significantly reduced its temperature regulation function.The impact of the Aral Sea area change on regional climate plays an important warning role in the protection and management of wetlands and lakes. |
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