Next Article in Journal
The Development of Sustainable Saltwater-Based Food Production Systems: A Review of Established and Novel Concepts
Next Article in Special Issue
Impact of Water Management on Rice Varieties, Yield, and Water Productivity under the System of Rice Intensification in Southern Taiwan
Previous Article in Journal
Pricing Unmetered Irrigation Water under Asymmetric Information and Full Cost Recovery
Previous Article in Special Issue
Assessment of FAO AquaCrop Model for Simulating Maize Growth and Productivity under Deficit Irrigation in a Tropical Environment
Article Menu

Export Article

Open AccessArticle
Water 2016, 8(12), 585; doi:10.3390/w8120585

A Rainfall Interception Model for Alfalfa Canopy under Simulated Sprinkler Irrigation

Research Center for Grassland Ecology and Resources, Beijing Forestry University, No. 35 Tsinghua East Road, Beijing 100083, China
*
Author to whom correspondence should be addressed.
Academic Editors: Tim Hess and Jerry Knox
Received: 19 October 2016 / Revised: 30 November 2016 / Accepted: 3 December 2016 / Published: 15 December 2016
(This article belongs to the Special Issue Resilient Water Management in Agriculture)
View Full-Text   |   Download PDF [1699 KB, uploaded 15 December 2016]   |  

Abstract

Estimating canopy interception of water by plants during rainfall or sprinkler irrigation is a critical step for evaluating water-use efficiency. Most existing experimental studies and mathematic models of canopy interception have paid little attention to the interception losses of water by herbaceous plants. To better understand the canopy interception processes of herbaceous plants and to estimate the interception losses, a process-based dynamic interception model for alfalfa canopy was developed and validated by an experiment under conditions of simulated sprinkler irrigation. The parameters of the model included the maximum interception, the rate of interception of the alfalfa canopy, and the duration of sprinkler irrigation. The model demonstrated that the amount of interception increased rapidly with duration in the early stage of sprinkler irrigation, and then gradually leveled off until the maximum retention capacity of the canopy was reached. The maximum interception by the alfalfa canopy, ranging from 0.29 to 1.26 mm, increased nonlinearly with the increase of leaf area index (LAI) and sprinkling intensity. The rate of interception increased with the decrease of LAI and the increase of sprinkling intensities. Meanwhile, a nonlinear equation based on sprinkling intensity and plant height was proposed in order to more practically estimate the maximum interception by alfalfa canopy. View Full-Text
Keywords: canopy interception; sprinkler irrigation; alfalfa; leaf area index; sprinkling intensity canopy interception; sprinkler irrigation; alfalfa; leaf area index; sprinkling intensity
Figures

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).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Jiao, J.; Su, D.; Han, L.; Wang, Y. A Rainfall Interception Model for Alfalfa Canopy under Simulated Sprinkler Irrigation. Water 2016, 8, 585.

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

1

Comments

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