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Comparison of Shuttleworth–Wallace and Dual Crop Coefficient Method for Estimating Evapotranspiration of a Tea Field in Southeast China.
- Source :
- Agriculture; Basel; Sep2022, Vol. 12 Issue 9, p1392-1392, 17p
- Publication Year :
- 2022
-
Abstract
- Determination of evaporation (E) and transpiration (T) in tea fields separately is important in developing precise irrigation scheduling and enhancing water use efficiency. In this study, the Shuttleworth–Wallace (S-W) model was applied to simulate the variations of E and T based on the data from 2015 to 2018 in a tea field in southeast China. The dual crop coefficient (D-K) method recommended by FAO-56 was also applied to calculate E and T, using the same data set to compare with the S-W model. The measured crop coefficient (K<subscript>c</subscript>) ranged from 0.43 to 1.44 with the average value was 0.90 during 1–150 DOY (days of year), and the measured K<subscript>c</subscript> tended to be stable with the average value of 0.83 during 151–365 DOY in 2015. The S-W model estimated ET<subscript>c</subscript> with root mean square error (RMSE) and R<superscript>2</superscript> of 0.45 mm d<superscript>−1</superscript> and 0.97, while for the D-K method the values were 0.61 mm d<superscript>−1</superscript> and 0.95. Therefore, both approaches could estimate the E and T separately in tea fields in southeast China, however, the D-K method had a slightly poorer accuracy compared to the S-W model in the estimation of ET<subscript>c</subscript>. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20770472
- Volume :
- 12
- Issue :
- 9
- Database :
- Complementary Index
- Journal :
- Agriculture; Basel
- Publication Type :
- Academic Journal
- Accession number :
- 159273982
- Full Text :
- https://doi.org/10.3390/agriculture12091392