Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017WR021019 |
A Water Temperature Simulation Model for Rice Paddies With Variable Water Depths | |
Maruyama, Atsushi1; Nemoto, Manabu2; Hamasaki, Takahiro2; Ishida, Sachinobu3; Kuwagata, Tsuneo1 | |
2017-12-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:12 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | A water temperature simulation model was developed to estimate the effects of water management on the thermal environment in rice paddies. The model was based on two energy balance equations: for the ground and for the vegetation, and considered the water layer and changes in the aerodynamic properties of its surface with water depth. The model was examined with field experiments for water depths of 0 mm (drained conditions) and 100 mm (flooded condition) at two locations. Daily mean water temperatures in the flooded condition were mostly higher than in the drained condition in both locations, and the maximum difference reached 2.6 degrees C. This difference was mainly caused by the difference in surface roughness of the ground. Heat exchange by free convection played an important role in determining water temperature. From the model simulation, the temperature difference between drained and flooded conditions was more apparent under low air temperature and small leaf area index conditions; the maximum difference reached 38 degrees. Most of this difference occurred when the range of water depth was lower than 50 mm. The season-long variation in modeled water temperature showed good agreement with an observation data set from rice paddies with various rice-growing seasons, for a diverse range of water depths (root mean square error of 0.8-1.0 degrees C). The proposed model can estimate water temperature for a given water depth, irrigation, and drainage conditions, which will improve our understanding of the effect of water management on plant growth and greenhouse gas emissions through the thermal environment of rice paddies. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423299000005 |
WOS关键词 | SENSIBLE HEAT-FLUX ; ORYZA-SATIVA L. ; METHANE EMISSION ; LOWLAND RICE ; DEVELOPMENTAL-STAGE ; INDUCED STERILITY ; ROUGHNESS LENGTH ; SMOOTH SURFACES ; SOLAR-RADIATION ; ENERGY-BALANCE |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/20088 |
专题 | 资源环境科学 |
作者单位 | 1.Natl Agr & Food Res Org NARO, Inst Agroenvironm Sci, Tsukuba, Ibaraki, Japan; 2.Natl Agr & Food Res Org NARO, Hokkaido Agr Res Ctr, Sapporo, Hokkaido, Japan; 3.Hirosaki Univ, Fac Sci & Technol, Hirosaki, Aomori, Japan |
推荐引用方式 GB/T 7714 | Maruyama, Atsushi,Nemoto, Manabu,Hamasaki, Takahiro,et al. A Water Temperature Simulation Model for Rice Paddies With Variable Water Depths[J]. WATER RESOURCES RESEARCH,2017,53(12). |
APA | Maruyama, Atsushi,Nemoto, Manabu,Hamasaki, Takahiro,Ishida, Sachinobu,&Kuwagata, Tsuneo.(2017).A Water Temperature Simulation Model for Rice Paddies With Variable Water Depths.WATER RESOURCES RESEARCH,53(12). |
MLA | Maruyama, Atsushi,et al."A Water Temperature Simulation Model for Rice Paddies With Variable Water Depths".WATER RESOURCES RESEARCH 53.12(2017). |
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