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題 名 | 水田微氣候模式之建立與應用=Development and Application of Micrometeorological Model for Paddy Field |
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作 者 | 吳富春; 沈易徵; | 書刊名 | 農業工程學報 |
卷 期 | 48:1 2002.03[民91.03] |
頁 次 | 頁10-23 |
分類號 | 430.1633 |
關鍵詞 | 微氣候模式; 可感熱; 蒸發潛熱; 太陽輻射; 水田; Micrometeorological model; Sensible heat; Latent heat; Solar radiation; Paddy field; |
語 文 | 中文(Chinese) |
中文摘要 | 本研究結合植物-大氣-土壤模式及大氣環流模式之熱流理論建立水田微氣候模式,模擬水稻田區之植物及地表與大氣間之能量傳遞,以評估水田調節微氣候之功能。本研究將水田微氣候模式應用於雲林莿桐休耕示範田區進行三種案例探討,模擬結果顯示水田蓄水時所吸收之太陽輻射量較不蓄水時為大,所吸收之熱量大部份經由蒸發潛熱流方式釋放,因而降低地表溫度及可感熱流之大小,達到調節微氣候之功效。本研究模擬結果顯示,水田休耕後若仍保持蓄水狀態,則在夏季時每公畝之水田具有相當於20臺家用冷氣機之冷房效果,其調節微氣候之功效較不蓄水之水田顯著。本研究所發展之模式可做為具體量化水田調節微氣候功能之有效工具。 |
英文摘要 | This study integrates the theoretical components of heat transfer of the Plant-Atmosphere-Soil Simulation Model (PASSM) and General Circulation Model (GCM) to develop a micrometeorological model for paddy field. Such a model can be used to simulate the heat flows between plant, land surface, and air, and evaluate the function of microclimate modification by the paddy field. The proposed model is applied to three case studies on the Tsi-Tung demonstration paddy fields in Yun-Lin, Taiwan. The simulation results indicate that the net absorption of solar radiation is greater for the paddy fields with water storage than those without water storage. Most of the absorbed energy is released through the latent heat of evaporation, which reduces the land surface temperature and sensible heat flow into air, thus modifies the regional microclimate. The results also reveal that if water storage remains in the paddy fields after planting rice in summertime, the cooling effect of the one-hector paddy field is equivalent to 20 family-type air conditioners. The modification of microclimate is more significant as compared to the paddy fields without water storage. The proposed model can be used as an effective tool to quantify such effects. |
本系統中英文摘要資訊取自各篇刊載內容。