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題名 | 以土壤水分遞減法與熱收支法估算臺東地區新興地番荔枝果園蒸發散量=To Estimate Evapotranspiration by Soil Moisture Depletion and Heat Budget for a Sugar Apple Orchard at Reclaimed Land of Taitung Area |
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作者 | 唐琦; 張裕山; | 書刊名 | 農業工程學報 |
卷期 | 56:2 2010.06[民99.06] |
頁次 | 頁35-43 |
分類號 | 434.273 |
關鍵詞 | 新興地; 番荔枝; 蒸發散量; Reclaimed land; Sugar apple; Evapotranspiration; |
語文 | 中文(Chinese) |
中文摘要 | 本研究自2007年3月1日至2008年2月12日止,於臺東縣臺東市之新興地番荔枝栽植區,擇一面積1.8 ha(長度及寬度約為150及120 m)之番荔枝果園試區(121°4’56” E,22°44’36” N),針對淨輻射量、地中傳導熱量、氣溫、相對濕度及地面下不同土層深度(0.1、0.3及0.6 m)之土壤水分導電阻抗進行觀測,採土壤水分遞減法估算實際蒸發散量(ETa),對熱收支法估測蒸發散量(ETH)與A型蒸發皿蒸發量(EA)進行比較分析,以期建立新興地番荔枝果園之蒸發散量簡單估測方法。經相關係數與F值檢驗,可知ETH及EA均與ETa間具有直線遞增關係,前後二者之迴歸係數為0.55及0.54,且已達1%顯著水準,顯示熱收支法估測新興地番荔枝果園之蒸發散量應具相當可信性,而每日ETa為0.7~6.6 mm,平均值為2.5 mm,及每日ETH為0.6~7.3 mm,平均值為3.0 mm。新興地番荔枝果園蒸發散比估值(ETa/EA)約為0.68。 |
英文摘要 | This study was performed to obtain the rational evapotranspiration for sugar apple fields at a reclaimed land of Taitung area. The selected sugar apple orchard (22°44’36” N, 121°4’56” E) was enclosed with 1.8 ha (150 m × 120 m), at suburb of Taitung City, Taitung Hsien, Taiwan. The observations included as follow: net radiation, soil heat flux, air temperature, relative humidity and soil moisture sensor resistance within 0.1, 0.3 and 0.6 m depth under ground. All data of the estimated evapotranspiration (ETH) by heat budget method and evaporation (EA) by A-type evaporation tank were compared with the practical evapotranspiration (ETa) by soil moisture depletion method, from March 1, 2007 to February 12, 2008. The simply estimated measures for sugar apple fields at a reclaimed land could be created. The regression analysis of ETH and EA with ETa had examined by correlation coefficient and F-test. The ETH and EA were significantly correlated to ETa with a linear increasing tendency and 1% signification level, the regression coefficients were 0.55 and 0.54. There was a good confidence for estimating evapotranspiration of sugar apple orchard for a reclaimed land by the heat budget method. The daily range and average of ETa and ETH were (0.7-6.6, 2.5) mm and (0.6-7.3, 3.0) mm, respectively. The ratio of practical evapotranspiration and evaporation (ETa/EA) for sugar apple orchard was about to 0.68. |
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