中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 泾河上游流域实际蒸散发变化趋势及成因分析 水土保持研究 2016,23 (2) 143-147
Position: Home > Articles > Variation of Actual Evapotranspiration and Its Causes Analysis in the Upper Reaches of the Jinghe River Basin Research of Soil and Water Conservation 2016,23 (2) 143-147

泾河上游流域实际蒸散发变化趋势及成因分析

作  者：
党素珍;蒋晓辉;董国涛;程春晓;白乐
单  位：
黄河水利委员会黄河水利科学研究院
关键词：
实际蒸散发;蒸散发互补关系;平流—干旱模型(AA模型);泾河流域
摘  要：
利用泾河上游流域1973—2012年的径流和蒸发皿观测资料,验证了该区域蒸散发量存在互补关系;在此基础上,利用区域内1966—2012年的气象资料,采用蒸散发互补关系模型估算区域实际蒸散发量,并进一步分析实际蒸散发的变化趋势及成因。结果表明,泾河上游流域蒸散发互补关系显著,平流—干旱模型计算该区域1966—2012年多年平均实际蒸散发量为529.4mm,总体呈减少趋势,变化率为-4.64mm/(10a)。季节变化上,春、夏、秋季的实际蒸散发量均呈下降趋势,其中夏季实际蒸散发量下降趋势显著,冬季蒸散发略有上升。通过分析实际蒸散发与气象因子的相关关系以及各气象因子变化趋势可知,研究区实际蒸散发的变化与降水、相对湿度和日照时数呈正相关关系,而与风速的变化呈负相关,该区域年实际蒸散发减少的主要原因可能是由于日照时数减少导致太阳辐射能量下降及降水量减少使可供蒸发的水量减少。
译  名：
Variation of Actual Evapotranspiration and Its Causes Analysis in the Upper Reaches of the Jinghe River Basin
作  者：
DANG Suzhen;JIANG Xiaohui;DONG Guotao;CHENG Chunxiao;BAI Le;Yellow River Institute of Hydraulic Research,Yellow River Conservancy Commission;Key Laboratory of Soil and Water Loss Process and Control on the Loess Plateau,MWR,Yellow River Institute of Hydraulic Research;
关键词：
actual evapotranspiration;;complementary relationship of evapotranspiration;;Advection-Aridity model(AA model);;the Jinghe River basin
摘  要：
Based on the runoff,precipitation and pan evaporation data from the upper reaches of the Jinghe River basin from 1973 to 2012,the complementary relationship of evapotranspiration was analyzed.The monthly actual evapotranspiration from 1966 to 2012was calculated by the complementary relationship evapotranspiration model,the variation of actual evapotranspiration and its causes were analyzed.The results indicated that there existed an obvious complementary relationship of evapotranspiration in the study area.The average annual actual evapotranspiration in the upper reaches of the Jinghe River basin was 529.4mm,and it had a downward trend at a rate of 4.64mm/decade.All of the actual evapotranspiration in spring,summer and autumn presented the downward trend,and the decreasing trend of actual evapotranspiration in summer was significant at the level of 0.01.An upward trend was observed in the actual evapotranspiration in winter.Through the analysis of the correlation between actual evapotranspiration and meteorological factors and the changing trend of various meteorological factors,precipitation,sunshine hours and relative humidity have the effective effect on the actual evapotranspiration,while wind has the negative effect.The decrease of actual evapotranspiration is mainly due to the reduction in solar radiation caused by the decrease of sunshine hours and the reduction of the available water for evapotranspiration caused by the decrease of precipitation.

相似文章

导出引用
计量
文章访问数: 7
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46