可能蒸散量

本文计算了北京的可能蒸散量和农业需水量，并比较了农业需水量和水资源量的差额。

In this paper , the potential evapotranspiration and agricultural water demand are calculated , and the agricultural water demand is compared with water resources in Beijing .

可能蒸散量动力学模型的改进及其对辨识土壤水分状况的意义

An improvement on the kinetic model of potential evapotranspiration and its sense to the identification of soil moisture regimes

根据联合国防治荒漠化公约的有关规定，运用Thornthwaite计算可能蒸散量的方法作出了第一张中国荒漠化气候类型分布图，首次确定了中国荒漠化的潜在发生范围。

The first climatic type distribution map of desertification in China has been drawn out making use of Thornthwaite method which was recommended in International Convention to Combat Desertification .

山西省94县可能蒸散量查算表的建立

Establishment of the consult table of possible evapotranspiration of 94 counties in Shanxi Province

从空间上，可能蒸散量大体上西部大于东部，北部大于南部。

In space , generally evaporation in the west was higher than in the east , evaporation in the north was higher than in the south .

利用最新的气象资料，计算并分析了中国北方地区与干旱有关的气象因素（可能蒸散量、水面蒸发量和降水量）的区域分布及其20世纪90年代的变化情况。

The regional distribution of meteorological factors related with drought and its variation in 1990 's were calculated and analyzed by using the newest meteorological data .

近50a来达日县降水年增加率为0.557mm/a，而该县最大可能蒸散发量的年增加率为0.132mm/a，气候总体趋势是由干旱向湿润方向发生转变；

The main conclusions are as follow : 1 . During the past nearly 50 years , the increase rate of precipitation and evapotranspiration is 0.557mm/a and 0.132mm / a , so the climate of Dari changed from drought to moist .