Crop evapotranspiration assessment under climate change in the Pannonian basin during 1991–2050

Meteorological applications

article

Mărgărit-Mircea Nistor¹  Sorin Cheval³  Alessandro F. Gualtieri¹  Alexandru Dumitrescu⁴  Vanessa E. Boţan⁵  Alex Berni¹  Gheorghe Hognogi⁶  Ioan A. Irimuş⁷  Cosmin G. Porumb-Ghiurco⁶ 

[1] Department of Chemical and Geological Sciences, University of Modena and Reggio Emilia;Current affiliation: Nanyang Technological University, School of Civil and Environmental Engineering;Research Institute of the University of Bucharest;National Meteorological Administration;Department of Psychology, University of Sussex;Department of Regional Geography and Territorial Planning, Faculty of Geography, Babeş-Bolyai University;Department of Physical and Technical Geography, Faculty of Geography, Babeş-Bolyai University

关键词: land cover;    climate;    seasonal evapotranspiration;    crop co-efficient;    Pannonian basin;   

DOI  :  10.1002/met.1607

学科分类：社会科学、人文和艺术（综合）

来源: Wiley

【 摘 要 】

The impact of climate on crop evapotranspiration (ET c ) was assessed in the Pannonian basin for the present (1991–2020) and future (2021–2050). Annual temperature, annual precipitation and monthly potential evapotranspiration are the main climate data used in the present study. The European land cover database was used for the spatial recognition of terrain vegetation of the countries which are found in the Pannonian basin. A difference of maximum annual temperature from 19.9 to 20.8 °C was observed in the investigated area between 1991–2020 and 2021–2050. Precipitation rates decrease from west (1800 mm) to east (below 400 mm), and the potential evapotranspiration varies from 500 to 800 mm. Four stages of crop growth were identified and for each stage the crop co-efficients were assessed. For present projections of climate data, the annual crop evapotranspiration variability is from 105 to 1087 mm and records the highest values in mid-season stage, over 630 mm. Future projections indicate that in the central and southern part of the Pannonian basin the annual crop evapotranspiration will increase. For both present and future projections, the lowest crop evapotranspiration was found in the cold season, because of lack of heat and lower values of the crop co-efficient.

【 授权许可】

CC BY|CC BY-NC|CC BY-NC-ND