The diurnal range of temperature indicated a U-shaped pattern along the altitudinal gradient, with a lowest value at the middle elevations (about 1600 m).
月平均的日较差沿着海拔高度变化呈“U”字形，中海拔月平均日较差值最低。
In ported trials, wu gave the minimum tr of all plants, and its diurnal maximum tr persisted stability the most within the range of soil moisture 20. 4 % - 6. 4 %.
盆栽试验表明，华北驼绒藜蒸腾最弱，且在土壤含水量20 。 4 6 。 4的范围内最高蒸腾速率稳定性最强；
And decreases in diurnal temperature range and wind speed were found to be the main influencing factors leading to the decrease of pan evaporation.
完全相关系数法分析表明，气温日较差和平均风速的减小与蒸发皿蒸发量的减少具有最显著的相关性，是蒸发皿蒸发量减少的影响因子。
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