西藏旁多水库气候变化特征及其影响分析  

Characteristics of climate change in Pangduo Reservoir in Tibet and its impact analysis.

作　　者：李梁婷 尼玛卓嘎 旦增罗布 尹正宇 米玛 明珍 邱豪 LI Liang-ting;Nima Zhuoga;Danzeng Luobu;YIN Zheng-yu;Mima;Mingzhen;QIU Hao(Central Laboratory of Geology and Mineral Exploration and Development Bureau of Tibet Autonomous Region,Lhasa 850000,China;Linzhou County Meteorological Bureau,Lhasa 850000,China;Pangduo Water Control Project Administration of Tibet Autonomous Region,Lhasa 850000,China)

机构地区：[1]西藏自治区地质矿产勘查开发局中心实验室,西藏拉萨850000 [2]林周县气象局,西藏拉萨850000 [3]西藏自治区旁多水利枢纽管理局,西藏拉萨850000

出　　处：《环境生态学》2024年第3期93-98,共6页Environmental Ecology

基　　金：西藏自治区自然科学基金项目(XZ202301ZR0018G)资助。

摘　　要：为进一步探究旁多水库建成运行后对库区和周边局地气候产生的影响,也为高原大型水利设施建设的生态环境影响评价提供决策参考,本研究统计收集了旁多水库2018—2022年逐日平均气温、降水量、相对湿度和最大风速等基础数据资料,运用气候学统计中线性倾向估计方法,分析水库建成运行后近5年来气候要素的变化趋势及其影响。结果表明:旁多水库年平均气温表现为上升趋势,年升温幅度为0.13℃。近库区和远库区的年平均气温差值表现为明显下降趋势,水库建成运行后对周边局地气温具有增温效果;旁多水库年降水量表现为下降趋势,年减少幅度为47.5 mm。近库区和远库区的年平均降水量比值表现为明显下降趋势,水库建成运行后对周边局地降水具有减少趋势;旁多水库年平均相对湿度表现为减少趋势,年减少幅度为0.9%。近库区和远库区的年平均相对湿度比值表现为增加趋势,水库建成运行后对周边局地平均相对湿度具有增湿趋势;旁多水库年平均最大风速表现为逐年上升趋势,年增大幅度为0.3 m/s。研究结论为旁多水库建成运行后呈现周边局地气温上升、降水和相对湿度减少的现象,可以初步判定旁多水库气候呈暖干趋势。This study aims to further explore the impact of the construction and operation of the Pangduo Reservoir on the local climate of the reservoir area and its surrounding areas,and to provide a reference for decision-making on the ecological environmental impact assessment of the construction of large-scale water conservancy facilities on the plateau.Based on the basic data of daily mean temperature,precipitation,relative humidity and maximum wind speed from 2018 to 2022,the linear tendency estimation method in climatology statistics is used in this study,the change trend of climate factors and its influence in the past 5 years after the reservoir was built and operated were analyzed.The results show that the annual average temperature of Pangduo Reservoir shows an upward trend with an annual increase range of 0.13℃.The annual average temperature difference between the near and far reservoir areas shows an obvious downward trend,After the completion and operation of the reservoir,the local temperature of the surrounding area will be increased;The annual decrease was 47.5 mm.The ratio of annual average precipitation in the near and far reservoir areas shows an obvious decreasing trend,and the local precipitation has a decreasing trend after the construction and operation of the reservoir,while the annual average relative humidity of the Pangduo Reservoir shows a decreasing trend,and the annual decrease is 0.9%.The annual average relative humidity ratio in the near and far reservoir areas shows an increasing trend,and the local average relative humidity tends to increase after the operation of the reservoir.The annual average maximum wind speed of Pangduo Reservoir shows an increasing trend year by year,with an annual increasing range of 0.3 m/s.The results show that the local temperature rises,precipitation and relative humidity decreases after the construction and operation of Pangduo Reservoir,and the climate of Pangduo Reservoir shows a warm and dry trend.

关 键 词：气候变化 影响分析 旁多水库 

分 类 号：X826[环境科学与工程—环境工程] P467[天文地球—大气科学及气象学]