新疆艾比湖绿洲潜在蒸散量年代际变化特征

发布时间：2018-04-11 15:32

本文选题：蒸散量 + 气候变化　；参考：《农业工程学报》2017年05期

【摘要】：潜在蒸散量在研究气候变化、监测农业旱情、提高农业水资源利用率等方面得到广泛应用。为研究新疆艾比湖绿洲潜在蒸散量年代际变化特征,该文使用1960—2013年艾比湖绿洲地区4个气象站点的数据,通过Penman-Monteith公式计算年和季节潜在蒸散量,利用Cramer突变检验分析和相关性分析与贡献率计算其特征变化。结果表明:1)20世纪90年代的潜在蒸散量在研究时间尺度中达到最低,自2000年后开始增加。春季、夏季、秋季的潜在蒸散量与年潜在蒸散量变化趋势一致,冬季无明显变化;2)通过Cramer法检验表明,春、夏、秋潜在蒸散量3季突变时间分别为1999年、1996年、1999年,冬季不存在突变,总体而言,潜在蒸散量突变均出现在20世纪90年代;3)风速是全年及季节潜在蒸散量的主导因素。研究可为艾比湖绿洲区域的水资源科学配置、农业灌溉管理以及脆弱生态环境恢复提供依据。
[Abstract]:Potential evapotranspiration is widely used in the study of climate change, the monitoring of agricultural drought, and the improvement of agricultural water resources utilization rate.In order to study the Interdecadal variation characteristics of potential evapotranspiration in Ebinur Oasis, Xinjiang, the data of four meteorological stations from 1960 to 2013 were used to calculate the annual and seasonal potential evapotranspiration by Penman-Monteith formula.Cramer mutation test analysis, correlation analysis and contribution rate were used to calculate its characteristics.The results show that the potential evapotranspiration in the 90's of the 20th century is the lowest in the study time scale, and it has been increasing since 2000.The change trend of latent evapotranspiration in spring, summer and autumn is consistent with that of annual potential evapotranspiration, but there is no obvious change in winter. The results of Cramer test show that the mutation time of spring, summer and autumn is 1999, 1996 and 1999, respectively.There is no mutation in winter. In general, the potential evapotranspiration mutation occurred in the 1990s) wind speed is the main factor of the annual and seasonal potential evapotranspiration.The study can provide basis for scientific allocation of water resources, agricultural irrigation management and restoration of fragile ecological environment in Ebino Lake oasis region.
【作者单位】：新疆大学资源与环境科学学院;绿洲生态教育部重点实验室;新疆师范大学地理科学与旅游学院;
【基金】：自治区科技支疆项目(201591101) 自治区重点实验室专项基金(2016D03001、2014KL005) 国家自然科学基金(U1303381、41261090、41161063) 教育部促进与美大地区科研合作与高层次人才培养项目
【分类号】：S161.4

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