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	Meteorological impacts on evapotranspiration in different climatic zones of Pakistan
	Adnan Shahzada; Ullah Kalim; Khan Azmat H; Gao Shouting
来源期刊	Journal of Arid Land
ISSN	1674-6767
出版年	2017
卷号	9 期号:6 页码:938-952
英文摘要	Arid regions are highly vulnerable and sensitive to drought. The crops cultivated in arid zones are at high risk due to the high evapotranspiration and water demands. This study analyzed the changes in seasonal and annual evapotranspiration(ET)during 1951-2016 at 50 meteorological stations located in the extremely arid, arid, and semi-arid zones of Pakistan using the Penman Monteith(PM)method. The results show that ET is highly sensitive and positively correlated to temperature, solar radiation, and wind speed whereas vapor pressure is negatively correlated to ET. The study also identifies the relationship of ET with the meteorological parameters in different climatic zones of Pakistan. The significant trend analysis of precipitation and temperature(maximum and minimum)are conducted at 95% confidence level to determine the behaviors of these parameters in the extremely arid, arid, and semi-arid zones. The mean annual precipitation and annual mean maximum temperature significantly increased by 0.828 mm/a and 0.014°C/a in the arid and extremely arid zones, respectively. The annual mean minimum temperature increased by 0.017°C/a in the extremely arid zone and 0.019°C/a in the arid zone, whereas a significant decrease of 0.007°C/a was observed in the semi-arid zone. This study provides probabilistic future scenarios that would be helpful for policy-makers, agriculturists to plan effective irrigation measures towards the sustainable development in Pakistan.
英文关键词	evapotranspiration meteorological parameters climatic zone Penman Monteith method Pakistan
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:6108425
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335876
作者单位	Adnan Shahzada, Department of Meteorology, COMSATS Institute of Information Technology, Islamabad, 44000, Pakistan.; Ullah Kalim, Department of Meteorology, COMSATS Institute of Information Technology, Islamabad, 44000, Pakistan.; Khan Azmat H, Pakistan Meteorological Department, Islamabad, 44000, Pakistan.; Gao Shouting, Institute of Atmospheric Physics, Chinese Academy of Sciences, State key Laboratory of Cloud-Precipitation Physics and Severe Storms, Beijing 100029, China.
推荐引用方式 GB/T 7714	Adnan Shahzada,Ullah Kalim,Khan Azmat H,et al. Meteorological impacts on evapotranspiration in different climatic zones of Pakistan[J],2017,9(6):938-952.
APA	Adnan Shahzada,Ullah Kalim,Khan Azmat H,&Gao Shouting.(2017).Meteorological impacts on evapotranspiration in different climatic zones of Pakistan.Journal of Arid Land,9(6),938-952.
MLA	Adnan Shahzada,et al."Meteorological impacts on evapotranspiration in different climatic zones of Pakistan".Journal of Arid Land 9.6(2017):938-952.