实际蒸散量

用Priestley-Taylor模式计算棉田实际蒸散量的研究

Calculation of actual evapotranspiration for cotton field by means of the priestley & taylor model

森林植被生态环境用水用林地实际蒸散量表示，全省林地耗水大致为346～477mm；

Water consumption by forest-vegetation is shown using actual evapotranspiration , it is found that the total amount of the province is over 346-477 mm .

研究成果为定量评价水土资源环境，估测农田蒸散量、制定合理的农田灌溉制度与改善农业生态环境具有重要的意义。研究成果如下：3.利用SWAP模型估算了农田实际蒸散量。

It is of a great significance to know field evapotranspiration and establish reasonable irrigation scheduling and improve ecological environment . ( 3 ) The result calculated By SWAP shows irrigation is key on field evapotranspiration in winter wheat period .

三种通过常规气象变量估算实际蒸散量模型的适用性比较

Evaluation of applicability of three evapotranspiration models using meteorological data

旱作小麦农田实际蒸散量计算模式研究

Model to compute the actual evapo-transpiration in the field of rainfed wheat

为流域分布式降雨-径流模型提供了可靠的实际蒸散量模拟方法。

The research results provided an effective method for the distributed rainfall-runoff model in simulating actual evapotranspiration .

以水量平衡方程为基础建立了计算和预报农田实际蒸散量的数学模型。

Based on water balance equation , the mathematics model for the computation and prediction of evapotranspiration from the farmlands was established .

土壤水分预报模型综合分析了它们的动态变化，给出了未来农田实际蒸散量和土壤有效水分含量；

The sub-model of predicting soil water content analyses comprehensively their dynamic changes and tells in advance the actual evapotranspiration of farmland and soil available water content in the future .

模拟的实际蒸散量用无定河及其岔巴沟子流域实测降水与实测径流的差值进行验证，误差小于5%。

The simulated evapotranspiration values over the Wuding River Basin and one of its sub-basins ( Chabagou ) agree well with the observed , the difference between the annual precipitation and runoff , with the relative errors being less than 5 % .

选择适合的潜在蒸散和湿润环境蒸散的估算式，利用相对潜在蒸散量指标，相对实际蒸散量指标及流域湿润度，通过数据集群技术，完整模拟并展现了蒸散互补相关关系。

By thoroughly analyzing the concept of " potential evaporation " and " wet environment area evapotranspiration ", using index of comparatively potential evaporation and comparatively actual one , the complementary relationship between actual and potential evapotranspiration was testified entirely with data integration technique .

大气温室效应增强对实际蒸散发量的影响

The Influence of the Increment of Greenhouse Effect on the Actual Evapotranspiration

用水量平衡法计算的流域多年平均实际蒸散发量对估算结果进行检验。

Actual evapotranspiration was reckoned by model and results were verified by explored the secular annual mean basin actual evapotranspiration which was calculated from water model .

本文利用黄河流域气象、水文及日射站的水平面观测资料，证实了流域尺度上存在蒸散互补相关关系，进而采用蒸散互补模型对流域年实际蒸散发量进行估算；

It was substantiated that the complementary relationship of evapotranspiration on the Yellow River valley exists by using ground observed data from weather stations , hydrological and solar radiation observer .