本文選題：蒸散量 + 氣溫��； 參考：《農(nóng)業(yè)工程學(xué)報(bào)》2017年02期

【摘要】：潛在蒸散發(fā)是水文循環(huán)和能量循環(huán)的一項(xiàng)重要組成,準(zhǔn)確估算蒸散發(fā)對農(nóng)業(yè)水資源有效利用具有重要的理論和現(xiàn)實(shí)意義。為獲得精度穩(wěn)定可靠的蒸散發(fā)估計(jì)值同時(shí)只需較少的氣象資料,以沂沭河上游流域(臨沂控制站)為研究區(qū),提出改進(jìn)的雙線性曲面回歸模型(bilinear surface regression model,BSRM)計(jì)算站點(diǎn)的潛在蒸散量。以實(shí)測蒸發(fā)數(shù)據(jù)折算的陸面潛在蒸散量為標(biāo)準(zhǔn),同時(shí)以彭曼公式(P-M)為參考與之對比,檢驗(yàn)和評價(jià)3種BSRM模型的精度,并分析各氣象因子對潛在蒸散量的影響。結(jié)果表明:3種BSRM模型中,基于日照百分率、氣溫和相對濕度建立的雙線性曲面回歸模型模擬精度最高,以基于日照百分率計(jì)算的太陽輻射、氣溫、相對濕度建立的雙線性曲面回歸模型次之,以基于Hargreaves-Allen方程計(jì)算的太陽輻射、氣溫和相對濕度建立的雙線性曲面回歸模型模擬精度最差�；谌照瞻俜致�、氣溫和相對濕度建立的BSRM模型的模擬精度略優(yōu)于P-M公式,但所需的氣象因子較少,計(jì)算方法簡單;且受氣象因子的變化影響較少,模擬精度穩(wěn)定可靠,是一種有效的替代方法。
[Abstract]:Potential evapotranspiration is an important component of hydrological cycle and energy cycle. Accurate estimation of evapotranspiration has important theoretical and practical significance for the effective utilization of agricultural water resources. In order to obtain accurate and reliable estimation of evapotranspiration with less meteorological data, an improved bilinear curved surface regression model (bilinear surface regression model BSRM) is proposed to calculate the potential evapotranspiration in the upper reaches of Yi-Shuhe River Basin (Linyi Control Station). Based on the land surface potential evapotranspiration converted from the measured evaporation data and compared with the Pengmang formula P-M, the accuracy of the three BSRM models is tested and evaluated, and the influence of various meteorological factors on the potential evapotranspiration is analyzed. The results show that the bilinear curved surface regression model based on sunshine percentage, temperature and relative humidity has the highest simulation accuracy among the three BSRM models, and the solar radiation and temperature based on sunshine percentage are the best. The bilinear surface regression model based on relative humidity is the second, and the bilinear surface regression model based on Hargreaves-Allen equation is the worst. Based on sunshine percentage, the simulation accuracy of BSRM model based on temperature and relative humidity is slightly better than that of P-M formula, but the meteorological factors need less, the calculation method is simple, and the simulation accuracy is stable and reliable. Is an effective alternative.
【作者單位】： 南京信息工程大學(xué)水文氣象學(xué)院;河南理工大學(xué)資源環(huán)境學(xué)院;昆山市氣象局;
【基金】：國家自然科學(xué)基金(41105074) 江蘇省自然科學(xué)基金項(xiàng)目(BK20141001) 淮河流域氣象開放基金(HRM201502) 江蘇省氣象局青年科研基金項(xiàng)目資助(Q201602)
【分類號】：S161.4
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本文編號：1914588