干旱区生态环境知识资源中心(Arid): 近50年中国干旱半干旱地区降水量与潜在蒸散量分析

Arid

	近50年中国干旱半干旱地区降水量与潜在蒸散量分析
其他题名	Analysis of precipitation and potential evapotranspiration in arid and semi arid area of China in recent 50 years
	李鹏飞; 孙小明; 赵昕奕
来源期刊	干旱区资源与环境
ISSN	1003-7578
出版年	2012
卷号	26 期号:7 页码:57-63
中文摘要	在中国干旱半干旱地区日气象数据分析的基础上,依据彭曼公式计算出潜在蒸散量,以及生长季内的年平均降水量与潜在蒸散量二者的差值,利用空间分异分析,气候倾向率检测,以及时间序列MK突变检验等方法分析了降水量与潜在蒸散量的时空变化特征。结果表明:总体来看,我国干旱半干旱区50年来东、西部的气候变化有明显的差异,西北地区降水量增加,潜在蒸散量减少,干旱化程度在减轻,且变化十分显著。而东部干旱半干旱区降水量减少,潜在蒸散量增加,干旱化严重。
英文摘要	Based on the daily air temperature,air pressure,precipitation and other weather data of 169 weather stations in arid and semi arid area of China in recent 50 years,the annual precipitation and annual potential evapotranspiration of the growing season as well as the difference of them were calculated in this paper.The spatial variation,climate change,decadal variability,and the MK mutation testing were discussed.The results showed that overall,the differences of climate change between east part and west part of the arid and semi arid area of China in recent 50 years was significant.The precipitation was increasing while the potential evapotranspiration was reducing in northwest of China.The degree of drought and its change were very significant.The precipitation was reducing while the potential evapotranspiration was increasing in east of the arid and semi arid area of China,so was the degree of drought,but its change was not obvious.
中文关键词	地理科学 ; 气候变化检测 ; 潜在蒸散量 ; 半干旱干旱地区
英文关键词	potential evapotranspiration precipitation climate change MK mutation test
类型	Article
语种	中文
国家	中国
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:4576249
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/228118
作者单位	李鹏飞, 北京大学城市与环境学院, 北京 100871, 中国.; 孙小明, 北京大学城市与环境学院, 北京 100871, 中国.; 赵昕奕, 北京大学城市与环境学院, 北京 100871, 中国.
推荐引用方式 GB/T 7714	李鹏飞,孙小明,赵昕奕. 近50年中国干旱半干旱地区降水量与潜在蒸散量分析[J]. 北京大学,2012,26(7):57-63.
APA	李鹏飞,孙小明,&赵昕奕.(2012).近50年中国干旱半干旱地区降水量与潜在蒸散量分析.干旱区资源与环境,26(7),57-63.
MLA	李鹏飞,et al."近50年中国干旱半干旱地区降水量与潜在蒸散量分析".干旱区资源与环境 26.7(2012):57-63.