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[1]HUANG Juan,SHEN Shuanghe,LI Xinjian,et al.Research of Variation Trend and Spatial Pattern of Reference Crop Evapotranspiration During the Period from 1961 to 2010 in China[J].Research of Soil and Water Conservation,2016,23(05):240-244.

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Research of Variation Trend and Spatial Pattern of Reference Crop Evapotranspiration During the Period from 1961 to 2010 in China

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 240-244 Column: Public date: 2016-10-28

Title:: Research of Variation Trend and Spatial Pattern of Reference Crop Evapotranspiration During the Period from 1961 to 2010 in China

Author(s):: HUANG Juan^1,4, SHEN Shuanghe², LI Xinjian³, ZHANG Wenbin⁴; 1. College of Applied Meteorology, Nanjing University of Information Science & Technology, Nanjing 210044, China;
2. Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disaster, Nanjing University of Information Science & Technology, Nanjing 210044, China;
3. Xinjiang Agriculture Observatory, Urumqi 830002, China;
4. Institute of Desert Meteorology, China Meterological Administration, Urumqi 830002, China

Keywords:: Penman-Monteith model; reference crop evapotranspiration; change trend; temporal and spatial distribution

CLC:: S161.4;P311

DOI:: -

Abstract:: The annual reference crop evapotranspiration was estimated using Penman-Monteith model recommended by Food and Agriculture Organization of the United Nations (FAO) with the observation data from 529 meteorological sites during the period of 1961 to 2010, and the variation trend and spatial pattern of ET₀ were investigated in detail. The results indicated that: (1) through analysis of annual variation tendency for the reference crop evapotranspiration, it was found that during the period from 1961 to 2010, reference crop evapotranspiration declined (1961—1993), did not drop, and then slowly recovered (1994—2010); (2) through the reference crop evapotranspiration in recent 50 years, the average value on the temporal and spatial distribution analysis, it was found that the values in northwest China and southwest China were significantly greater than those of northeast area and the central hinterland; (3) the main factors affecting the spatial and temporal reference crop evapotranspiration were the wind speed and temperature distribution in China (Temperature had a wide range of influence, wind speed had a great effect on ET₀). And meanwhile, China’s complex terrain, the vast area, latitude and longitude span, all weather conditions caused the differences in different crop evapotranspiration capacity.

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