干旱区生态环境知识资源中心(Arid): 西北干旱区1960-2019年实际蒸散发时空变化特征

Arid

	西北干旱区1960-2019年实际蒸散发时空变化特征
其他题名	Characteristics of Spatial and Temporal Variation of Actual Evapotranspiration in the Arid Region of Northwest China from 1960to 2019
	刘洋; 于恩涛; 杨建军; 黄文君
来源期刊	水土保持研究
ISSN	1005-3409
出版年	2021
卷号	28 期号:6 页码:75-
中文摘要	为了分析气候变化背景下西北干旱区实际蒸散发的时空变化特征及影响因素,利用西北干旱区50个气象站点,1960-2019年的气象观测资料,采用Granger-Gray模型(GG模型)估算研究区的实际蒸散发,分析其空间分布特征和时间变化趋势,并探讨了气象因子对实际蒸散发的影响。结果表明:(1)1960-2019年西北干旱区年平均实际蒸散发约为586.9mm,夏季大而冬季小;研究区西南部和东部的ETa较高,西北部和中部较低。(2)60a来西北干旱区实际蒸散发呈微弱的上升趋势,其变化速率为0.24mm/10a;ETa在春季和冬季呈增加趋势,在夏季和秋季则呈下降趋势。(3)ETa与气温、相对湿度、日照时数呈正相关关系,与风速呈负相关关系,气温、相对湿度、日照时数和风速均对实际蒸散发有影响。总体来说,西北干旱区实际蒸散发在1960-2019年间呈增加趋势,其变化主要受气温、相对湿度和风速的影响。
英文摘要	In order to analyze the characteristics of temporal and spatial variation and influencing factors of actual evapotranspiration in the arid region of northwest China under the background of climate change.The Granger-Gray model(GG model)was used to estimate the actual evapotranspiration in the study area based on the meteorological observation data from 50meteorological stations in the arid region of northwest China during 1960-2019.The spatial distribution characteristics and temporal variation trend of the actual evapotranspiration were analyzed,and the influence of meteorological factors on the actual evapotranspiration was also discussed.The results showed that:(1)from 1960to 2019,the average annual actual evapotranspiration(ETa)in the arid region of northwest China was about 586.9mm,which was greater in summer and smaller in winter;ETawas higher in the southwest and east of the study area,but lower in the northwest and central part;(2)In the past 60 years,ETain the arid region of northwest China showed a slight increasing trend,with a change rate of 0.24 mm/decade;ETaincreased in spring and winter but decreased in summer and autumn;(3)ETawas positively correlated with air temperature,relative humidity and sunshine hours,and negatively correlated with wind speed,ETain the arid region of northwest China was mainly affected by temperature,relative humidity,sunshine duration and wind speed.In general,ETain the arid region of northwest China showed an increasing trend during 1960-2019,and its changes were mainly affected by temperature,relative humidity and wind speed.
中文关键词	实际蒸散发 ; Granger-Gray模型(GG模型) ; 西北干旱区 ; 时空变化
英文关键词	actual evapotranspiration Granger-Gray model(GG model) arid region of northwest China spatial and temporal variation
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:7111304
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377955
作者单位	刘洋, 新疆大学资源与环境科学学院;;新疆大学, ;;教育部绿洲生态重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046.; 杨建军, 新疆大学资源与环境科学学院;;新疆大学, ;;教育部绿洲生态重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046.; 黄文君, 新疆大学资源与环境科学学院;;新疆大学, ;;教育部绿洲生态重点实验室, 乌鲁木齐;;乌鲁木齐, ;; 830046;;830046.; 于恩涛, 中国科学院大气物理研究所竺可桢-南森国际研究中心;;南京信息工程大学, ;;气象灾害预报与评估协同创新中心, ;;南京, 北京;; 100029;;210044, 中国.
推荐引用方式 GB/T 7714	刘洋,于恩涛,杨建军,等. 西北干旱区1960-2019年实际蒸散发时空变化特征[J],2021,28(6):75-.
APA	刘洋,于恩涛,杨建军,&黄文君.(2021).西北干旱区1960-2019年实际蒸散发时空变化特征.水土保持研究,28(6),75-.
MLA	刘洋,et al."西北干旱区1960-2019年实际蒸散发时空变化特征".水土保持研究 28.6(2021):75-.