摘要
以塔里木河流域为研究对象,分析了气候变化下流域潜在蒸散发(ET_(0))时空特征。基于塔里木河流域及周边40个气象站点1970~2019年逐日气象资料,选取Penman-Monteith公式计算ET_(0),运用趋势检验法和Pearson相关分析对流域ET_(0)时空变化及与气象因子关系进行了分析。结果显示:塔里木河流域多年ET_(0)总体上呈现下降趋势,下降速率为0.58 mm/a,阶段变化表现为先减少后增加的特点。ET_(0)在季节上表现为夏季>春季>秋季>冬季;在空间上,总体表现为东高西低。ET_(0)与太阳辐射之间存在最强的正相关,相对湿度和气压与ET_(0)显示为显著的负相关。
In this study,the spatial and temporal characteristics of potential evapotranspiration(ET_(0))under climate change in the Tarim River Basin were analyzed.Based on the daily meteorological data from 1970 to 2019 from 40 meteorological stations in the Tarim River Basin and its surrounding areas,Penman-Monteith formula was selected to calculate ET_(0).Trend test and Pearson correlation analysis were used to analyze the temporal and spatial changes of ET_(0) and its relationship with meteorological factors.The results show that ET_(0) in the Tarim River Basin has a decreasing trend with a decreasing rate of 0.58mm/a.ET_(0) showed a seasonal pattern of summer>spring>autumn>winter.In space,the overall performance is high in the east and low in the west.There is the strongest positive correlation between ET_(0) and solar radiation,and the relative humidity and air pressure show significant negative correlation with ET_(0).
作者
王婷婷
刘冬燕
蔡玙潇
Wang Tingting;Liu Dongyan;Cai Yuxiao(School of Environmental and Geographical Sciences,Shanghai Normal University,Shanghai 200233,China)
出处
《绿色科技》
2022年第2期26-29,共4页
Journal of Green Science and Technology
基金
山东省自然科学基金面上项目(编号:ZR2019MC058)
山东省高等学校科技计划项目(编号:J18KB084)
曲阜师范大学大学生创新创业训练计划(编号:XJ20200010)。
关键词
潜在蒸散发
时空变化
塔里木河流域
potential evapotranspiration
spatiotemporal variation
Tarim River Basin
