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Diurnal and seasonal variation in bulk stomatal conductance of the rice canopy and its dependence on developmental stage

Bulk stomatal conductance ( g S) is an important factor that expresses the effect of stomatal movements on water transfer between the plant and atmosphere at the canopy scale and is widely used as a parameter in many micrometeorological models. Diurnal and seasonal variations in g S of the rice cano...

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Published in:Agricultural and forest meteorology 2008-06, Vol.148 (6), p.1161-1173
Main Authors: Maruyama, Atsushi, Kuwagata, Tsuneo
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Language:English
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description Bulk stomatal conductance ( g S) is an important factor that expresses the effect of stomatal movements on water transfer between the plant and atmosphere at the canopy scale and is widely used as a parameter in many micrometeorological models. Diurnal and seasonal variations in g S of the rice canopy were determined using a heat transfer model based on heat flux measurements in irrigated rice fields. Season-long observations from transplanting to maturation of rice plants were conducted to obtain heat flux data in a humid temperate climate at three experimental sites with widely differing cropping seasons in Japan. A double source model was used as the heat transfer model to calculate g S. Seasonal variations in heat fluxes differed for sensible heat and latent heat. Sensible heat flux was smaller and relatively constant within the range −50 to 50 W m −2, whereas latent heat flux showed large variations from 0 to 250 W m −2 throughout the growth period. It was suggested that this would be a common pattern for paddy rice fields in all cropping seasons. Diurnal variation in g s showed a common trend in all growth periods with lower values in the morning and evening, and higher values during the midday because of its dependence on solar radiation. The relationship between absorbed solar radiation ( S abs) and g s was determined using a Jarvis-type model for each growth period. Maximum values of bulk stomatal conductance ( g Smax) for saturated S abs rapidly decreased from 0.06 to 0.02 m s −1 between the active tillering and panicle formation stages, and moderately decreased from 0.02 to 0.01 m s −1 during the ripening stage. This was considered to be due to the change in leaf chlorophyll concentration. Seasonal variation in g Smax can be commonly expressed for all cropping seasons using the function of developmental stage ( P S). Using this function, the g S value can be obtained easily at a given developmental stage, which makes it possible to use micrometeorological models in relation to rice phenological development for evaluating important factors, such as water temperature and transpiration, that affect rice production.
doi_str_mv 10.1016/j.agrformet.2008.03.001
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Diurnal variation in g s showed a common trend in all growth periods with lower values in the morning and evening, and higher values during the midday because of its dependence on solar radiation. The relationship between absorbed solar radiation ( S abs) and g s was determined using a Jarvis-type model for each growth period. Maximum values of bulk stomatal conductance ( g Smax) for saturated S abs rapidly decreased from 0.06 to 0.02 m s −1 between the active tillering and panicle formation stages, and moderately decreased from 0.02 to 0.01 m s −1 during the ripening stage. This was considered to be due to the change in leaf chlorophyll concentration. Seasonal variation in g Smax can be commonly expressed for all cropping seasons using the function of developmental stage ( P S). 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Plant production</subject><subject>growing season</subject><subject>Heat balance</subject><subject>heat transfer</subject><subject>inflorescences</subject><subject>meteorological parameters</subject><subject>microclimate</subject><subject>Oryza sativa</subject><subject>phenology</subject><subject>plant development</subject><subject>plant-water relations</subject><subject>Rice</subject><subject>ripening</subject><subject>seasonal variation</subject><subject>solar radiation</subject><subject>Stomatal conductance</subject><subject>tillering</subject><subject>Transpiration</subject><issn>0168-1923</issn><issn>1873-2240</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2008</creationdate><recordtype>article</recordtype><recordid>eNqFkE1v1DAQhiNEpS5tf0N9gVuCP7L-OFaFAlIlDtCz5Tjj4iWxg-2s6L_H6Va9crJH88w79tM01wR3BBP-8dCZx-RimqF0FGPZYdZhTN40OyIFaynt8dtmV0nZEkXZefMu50MFqBBq1_z95NcUzIRMGFEGk-NWHE3ypvgYkA9oWKffKJc4m1JbNoZxtcUECyg6VH4BSr7erQlxeXqO8SWjERYIIzxToVZHmOIyQ9gicjGPcNmcOTNluHo5L5qHu88_b7-299-_fLu9uW9tz3lp7WgYp1T0nCjeS4upIA743rL9UP-nnBVqYFYSo4TigxN26DnrJcGwx1BbF82HU-6S4p8VctGzzxamyQSIa9YUSyUZwRUUJ9CmmHMCp5fkZ5OeNMF6M60P-tW03kxrzHQVWSffv6ww2ZrJpSrH59dxinumqNy46xPnTNyiKvPwg9aAmqWUIrISNycCqpGjh6Sz9ZvE0SewRY_R__c1_wBDuaNP</recordid><startdate>20080630</startdate><enddate>20080630</enddate><creator>Maruyama, Atsushi</creator><creator>Kuwagata, Tsuneo</creator><general>Elsevier B.V</general><general>[Oxford]: Elsevier Science Ltd</general><general>Elsevier</general><scope>FBQ</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>F1W</scope><scope>H96</scope><scope>KL.</scope><scope>L.G</scope></search><sort><creationdate>20080630</creationdate><title>Diurnal and seasonal variation in bulk stomatal conductance of the rice canopy and its dependence on developmental stage</title><author>Maruyama, Atsushi ; Kuwagata, Tsuneo</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c466t-cda362274619648c0271fe65c35b1879fc79b3c81a9796bf7cb4634810e50e9b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2008</creationdate><topic>Agricultural and forest climatology and meteorology. Irrigation. Drainage</topic><topic>Agronomy. Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>bulk stomatal conductance</topic><topic>canopy</topic><topic>chlorophyll</topic><topic>Developmental stage</topic><topic>diurnal variation</topic><topic>field experimentation</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>General agronomy. Plant production</topic><topic>growing season</topic><topic>Heat balance</topic><topic>heat transfer</topic><topic>inflorescences</topic><topic>meteorological parameters</topic><topic>microclimate</topic><topic>Oryza sativa</topic><topic>phenology</topic><topic>plant development</topic><topic>plant-water relations</topic><topic>Rice</topic><topic>ripening</topic><topic>seasonal variation</topic><topic>solar radiation</topic><topic>Stomatal conductance</topic><topic>tillering</topic><topic>Transpiration</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Maruyama, Atsushi</creatorcontrib><creatorcontrib>Kuwagata, Tsuneo</creatorcontrib><collection>AGRIS</collection><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Meteorological &amp; Geoastrophysical Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy &amp; Non-Living Resources</collection><collection>Meteorological &amp; Geoastrophysical Abstracts - Academic</collection><collection>Aquatic Science &amp; Fisheries Abstracts (ASFA) Professional</collection><jtitle>Agricultural and forest meteorology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Maruyama, Atsushi</au><au>Kuwagata, Tsuneo</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Diurnal and seasonal variation in bulk stomatal conductance of the rice canopy and its dependence on developmental stage</atitle><jtitle>Agricultural and forest meteorology</jtitle><date>2008-06-30</date><risdate>2008</risdate><volume>148</volume><issue>6</issue><spage>1161</spage><epage>1173</epage><pages>1161-1173</pages><issn>0168-1923</issn><eissn>1873-2240</eissn><coden>AFMEEB</coden><abstract>Bulk stomatal conductance ( g S) is an important factor that expresses the effect of stomatal movements on water transfer between the plant and atmosphere at the canopy scale and is widely used as a parameter in many micrometeorological models. Diurnal and seasonal variations in g S of the rice canopy were determined using a heat transfer model based on heat flux measurements in irrigated rice fields. Season-long observations from transplanting to maturation of rice plants were conducted to obtain heat flux data in a humid temperate climate at three experimental sites with widely differing cropping seasons in Japan. A double source model was used as the heat transfer model to calculate g S. Seasonal variations in heat fluxes differed for sensible heat and latent heat. Sensible heat flux was smaller and relatively constant within the range −50 to 50 W m −2, whereas latent heat flux showed large variations from 0 to 250 W m −2 throughout the growth period. It was suggested that this would be a common pattern for paddy rice fields in all cropping seasons. Diurnal variation in g s showed a common trend in all growth periods with lower values in the morning and evening, and higher values during the midday because of its dependence on solar radiation. The relationship between absorbed solar radiation ( S abs) and g s was determined using a Jarvis-type model for each growth period. Maximum values of bulk stomatal conductance ( g Smax) for saturated S abs rapidly decreased from 0.06 to 0.02 m s −1 between the active tillering and panicle formation stages, and moderately decreased from 0.02 to 0.01 m s −1 during the ripening stage. This was considered to be due to the change in leaf chlorophyll concentration. Seasonal variation in g Smax can be commonly expressed for all cropping seasons using the function of developmental stage ( P S). Using this function, the g S value can be obtained easily at a given developmental stage, which makes it possible to use micrometeorological models in relation to rice phenological development for evaluating important factors, such as water temperature and transpiration, that affect rice production.</abstract><cop>Amsterdam</cop><cop>Oxford</cop><cop>New York, NY</cop><pub>Elsevier B.V</pub><doi>10.1016/j.agrformet.2008.03.001</doi><tpages>13</tpages></addata></record>
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ispartof Agricultural and forest meteorology, 2008-06, Vol.148 (6), p.1161-1173
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1873-2240
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subjects Agricultural and forest climatology and meteorology. Irrigation. Drainage
Agronomy. Soil science and plant productions
Biological and medical sciences
bulk stomatal conductance
canopy
chlorophyll
Developmental stage
diurnal variation
field experimentation
Fundamental and applied biological sciences. Psychology
General agronomy. Plant production
growing season
Heat balance
heat transfer
inflorescences
meteorological parameters
microclimate
Oryza sativa
phenology
plant development
plant-water relations
Rice
ripening
seasonal variation
solar radiation
Stomatal conductance
tillering
Transpiration
title Diurnal and seasonal variation in bulk stomatal conductance of the rice canopy and its dependence on developmental stage
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