Next Article in Journal
Bayesian Theory Based Self-Adapting Real-Time Correction Model for Flood Forecasting
Next Article in Special Issue
Precipitation Intensity Effects on Groundwater Recharge in the Southwestern United States
Previous Article in Journal
Impacts of Spatial Climatic Representation on Hydrological Model Calibration and Prediction Uncertainty: A Mountainous Catchment of Three Gorges Reservoir Region, China
Previous Article in Special Issue
Winter Irrigation Effects in Cotton Fields in Arid Inland Irrigated Areas in the North of the Tarim Basin, China
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(3), 72;

Partitioning of Cotton Field Evapotranspiration under Mulched Drip Irrigation Based on a Dual Crop Coefficient Model

Department of Hydraulic Engineering, State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China
Power China Kunming Engineering Corporation Limited, Kunming 650000, China
Author to whom correspondence should be addressed.
Academic Editors: Magaly Koch and Thomas M. Missimer
Received: 7 December 2015 / Revised: 14 February 2016 / Accepted: 17 February 2016 / Published: 25 February 2016
(This article belongs to the Special Issue Water Resources Assessment and Management in Drylands)
View Full-Text   |   Download PDF [2975 KB, uploaded 25 February 2016]   |  


Estimation of field crop evapotranspiration (ETc) and its partitioning into evaporation and transpiration, are of great importance in hydrological modeling and agricultural water management. In this study, we used a dual crop coefficient model SIMDualKc to estimate the actual crop evapotranspiration (ETc act ) and the basal crop coefficients over a cotton field in Northwestern China. A two-year field experiment was implemented in the cotton field under mulched drip irrigation. The simulated ETc act is consistent with observed ETc act as derived based on the eddy covariance system in the field. Basal crop coefficients of cotton for the initial, mid-season, and end-season are 0.20, 0.90, and 0.50, respectively. The transpiration components of ETc act are 96% (77%) and 94% (74%) in 2012 and 2013 with (without) plastic mulch, respectively. The impact of plastic mulch cover on soil evaporation is significant during drip irrigation ranging from crop development stage to mid-season stage. The extent of the impact depends on the variation of soil moisture, available energy of the soil surface, and the growth of the cotton leaves. Our results show that the SIMDualKc is capable of providing accurate estimation of ETc act for cotton field under mulched drip irrigation, and could be used as a valuable tool to establish irrigation schedule for cotton fields in arid regions as Northwestern China. View Full-Text
Keywords: SIMDualKc model; dual crop coefficient; eddy covariance; plastic mulch SIMDualKc model; dual crop coefficient; eddy covariance; plastic mulch

Figure 1

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Share & Cite This Article

MDPI and ACS Style

Tian, F.; Yang, P.; Hu, H.; Dai, C. Partitioning of Cotton Field Evapotranspiration under Mulched Drip Irrigation Based on a Dual Crop Coefficient Model. Water 2016, 8, 72.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Water EISSN 2073-4441 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top