Variations of carbon dioxide exchange in paddy field ecosystem under water-saving irrigation in Southeast China
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- 作者：Shihong Yanga ; b ; ysh7731@hhu.edu.cn" class="auth_mail" title="E-mail the corresponding author ; Junzeng Xua ; b ; Xiaoyin Liub ; Jiangang Zhangc ; Yijiang Wangc
- 关键词：Paddy field ; Water-saving irrigation ; Eddy covariance ; Static transparent chamber ; Carbon dioxide exchange
- 刊名：Agricultural Water Management
- 出版年：2016
- 出版时间：1 March 2016
- 年：2016
- 卷：166
- 期：Complete
- 页码：42-52
- 全文大小：957 K
文摘
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We examine daily and seasonal variations in CO2 exchange of paddy fields under water-saving irrigation.
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Frequent alternations of wetting and drying processes increase the ecosystem reparation, and led smaller net CO2 absorption.
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Daytime net CO2 absorption and net CO2 release at nighttime measured by STC method were overestimated compared to those measured by EC method.
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Higher Q10 values were observed for paddy fields under water-saving irrigation.
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Rice plants with water-saving irrigation displayed higher light saturation points during heading-flowering and milk stages.