Variation characteristics of stem water content in Lagerstroemia indica and its response to microenvironment
- Published
- Accepted
- Subject Areas
- Ecosystem Science, Natural Resource Management, Environmental Impacts, Forestry
- Keywords
- micro-environmental factors, stem water content (StWC), growth stages, Lagerstroemia indica
- Copyright
- © 2019 Liang et al.
- Licence
- This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, reproduction and adaptation in any medium and for any purpose provided that it is properly attributed. For attribution, the original author(s), title, publication source (PeerJ Preprints) and either DOI or URL of the article must be cited.
- Cite this article
- 2019. Variation characteristics of stem water content in Lagerstroemia indica and its response to microenvironment. PeerJ Preprints 7:e27772v1 https://doi.org/10.7287/peerj.preprints.27772v1
Abstract
To achieve a rational allocation of limited water resources, and formulation of an appropriate irrigation system, this research studied the change characteristics of stem water content (StWC) in plant and its response to micro-environmental factors. In this study, the StWC and micro-environmental factors of Lagerstroemia indica in Beijing were continuously observed by BD-IV plant stem water content sensor and a forest microclimate monitoring station from 2017 to 2018. The variation of StWC and its correlation with environmental factors were analyzed. The results showed the StWC of Lagerstroemia indica varies regularly day and night during the growth cycle. Meanwhile, the rising time, valley time, and falling time of StWC were various at the different growth stages of Lagerstroemia indica. The results of correlation analysis between StWC and micro-environmental factors indicated that the StWC of Lagerstroemia indica was positively correlated with air relative humidity, while it was negatively correlated with total radiation and air temperature. The multiple regression equation of StWC and micro-environmental factors of Lagerstroemia indica was StWC = 11.789-1.402Rn-0.931T-1.132Ws+0.933RH-3.368ST+2.168SMC, and the coefficient of determination of the equation was of 0.87. Furthermore, the results illustrated that the irrigation should pay attention to supplementing irrigation in time during the peak growing season of fruit.
Author Comment
This is a submission to PeerJ for review.
Supplemental Information
Stem Water Content (StWC)
The data in the sheet are voltage measurements of the BD-IV sensors.