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首页> 外文期刊>Journal of Turfgrass Management >Climatic Assessment of the Arid Southwestern United States for Use in Predicting Evapotranspiration of Turf grass
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Climatic Assessment of the Arid Southwestern United States for Use in Predicting Evapotranspiration of Turf grass

机译：美国西南干旱地区的气候评估，用于预测草皮草的蒸散量

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Climatic conditions were assessed at three locations in the arid southwestern United States over a two year period. The three locations were Las Vegas, NV, Tucson, AZ and Palm Desert, CA. Automated weather stations monitored maximum and minimum temperature, relative humidity, solar radiation, wind run and rainfall. Data were input into the empirical based Penman combination equation to predict potential evapotranspiration (ETo). Surveys were conducted at all three locations to evaluate the soil conditions, water availability, turfgrass management and crop coefficients used. Only slight differences existed beween average monthly minimum temperatures, maximum temperatures and solar radiation at the three sites. However, differences in average monthlywind run and relative humidity at the three sites led to greater separation in the ETo estimates during summer months. These differences resulted in a 7% and 13% error in estimating monthly ETo at the Palm Desert and Tucson sites respectively, based on using the Las Vegas monthly ETo data. However, when Palm Desert monthly ETo data was used to predict ETo at the Tucson site, a slightly larger error of 18% was observed. Greater variability existed in the daily ETo estimates during most months at the Tucson site, compared to the other two sites. This ETo variability combined with higher rainfall and a larger number of days on which temperatures dropped below freezing would indicate that potential differences in the response of turfgrass such as bermudagrass (Cy-nodon dactylon) would be greatest if comparisons were made with the Tucson site. However, the error is still low enough to suggest that research information generated on the water use of bermudagrass under similar cultural management at any one of the three locations could be transferred and used at the other two locations, if consideration was given to the error in estimate and the time of year.
机译：在两年的时间内，评估了美国西南干旱地区三个地点的气候条件。这三个地点分别是内华达州拉斯维加斯，亚利桑那州图森和加利福尼亚州棕榈沙漠。自动气象站监测最高和最低温度，相对湿度，太阳辐射，风向和降雨。将数据输入到基于经验的Penman组合方程中，以预测潜在的蒸散量（ETo）。在所有三个地点进行了调查，以评估土壤条件，水的可利用性，草皮管理和所使用的作物系数。在这三个地点，平均每月最低温度，最高温度和太阳辐射之间仅存在微小差异。但是，这三个地点的平均月风运行和相对湿度的差异导致夏季夏季ETo估算值之间的距离更大。根据使用拉斯维加斯每月ETo数据，这些差异导致在Palm Desert和Tucson站点分别估算每月ETo的误差为7％和13％。但是，当使用Palm Desert的每月ETo数据来预测图森站点的ETo时，观察到的误差稍大，为18％。与其他两个站点相比，图森站点在大多数月份的每日ETo估计值存在较大的差异。这种ETo变异性加上更高的降雨和更多的温度降到冰点以下的天数表明，如果与图森站点进行比较，则草皮草如百慕大草（Cy-nodon dactylon）响应的潜在差异将最大。但是，该误差仍然很低，不足以表明，如果考虑到以下方面的误差，在三个地点中任何一个地点在类似的文化管理下有关百慕大的水利用所产生的研究信息可以在其他两个地点进行转移和使用。估计和一年中的时间。

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