饱和水汽压

蒸腾强度与光量子密度、饱和水汽压差、水面蒸发等气象因子之间，具有较好的相关关系；

The values of TR showed good agreement with meteorological elements such as photon flux density ( PFD ), saturation vapour pressure deficit of air ( D ) and water surface evaporation ( EV );

北京山区落叶阔叶林优势种的水分利用效率（WUE）与其所在地的气候条件有很密切的关系，特别是大气相对湿度、太阳辐射强度、饱和水汽压亏缺（VPD）和温度。

The long term water use efficiency ( WUE ), of key species in deciduous broad-leaved forest in Beijing Mountain area , is strongly related to relative humidity , solar radiation , vapor pressure deficit and temperature .

据此建立了充分供水条件下冠气温差与饱和水汽压差的关系方程，作为基线方程，计算不同灌水处理的冬小麦旺盛生长期间水分胁迫指数（CWSI）。

A baseline equation of Tc - Ta with VPD was established to calculate the Tc - Ta under non-water-stressed condition for the purpose of calculation of crop water stress index ( CWSI ) .

一种新的计算冰面饱和水汽压方法

A New Method for Calculating the Saturated Water Vapor Pressure over Ice

饱和水汽压计算公式的比较研究

The Compare and Research of The Calculate Formula of The Saturation Water Steam Pressure

相对湿度和饱和水汽压的变化幅度大，并有明显的局部差异性。

Variations of relative humidity and saturated vapor pressure have great fluctuation and obvious local difference .

网室内外小气候要素（相对湿度、温度和饱和水汽压差）的差异随着风速的增加而减小；

The differences in relative humidity , temperature and vapor pressure deficit between inside and outside the screen-house decreased with the wind velocity increasing .

干热季林冠上湿度变化范围为26.5%~97.2%，饱和水汽压差数值大小介于0.3~30.5hPa之间；

In the dry hot season , relative humidity and water vapour deficit varied from 26.5 to 97.2 % and from 0.3 to 30.5 hPa , respectively ;

水稻气孔阻力与相对湿度、土壤含水量、叶气温差和光强呈现负相关，与饱和水汽压差、温度呈现正相关。

The stomatal resistance is negatively correlated with relative humidity , soil moisture , leaf-air temperature difference and light intensity and positively correlated to vapor pressure deficit and temperature .

蒸腾速率受到许多田间小气候因子的影响，相关分析及多元逐步回归分析表明净辐射与空气饱和水汽压差是影响茶园蒸腾作用的2个主要气象因子。

Correlation analysis and multi-factor successive regressional analysis revealed that net radiation and water vapor saturated deficit were the two major meteorological factors affecting transpiration of the tea plants .

空气温度、叶面温度、饱和水汽压差和气孔导度是影响水稻的蒸腾速率的关键因素，并在水稻不同生育阶段表现不同的影响程度；

Air temperature , leaf temperature , vapor pressure deficit and stoma conductance were the key factors affecting transpiration , and the effects would be different in different growing stages .

在限定土壤含水量的前提下，空气温度、空气湿度和大气饱和水汽压亏缺均为影响树干边材液流活动最主要、最直接的因子。

On the precondition of limitation of soil moisture , the most important and direct environmental factors which influencing sap flow velocity of trees were air temperature , air moisture and vapor pressure deficit .

在太阳辐射强度、空气温度、空气湿度以及大气饱和水汽压亏缺等环境因子各自的不同计算和测定参数中，林冠上层参数的作用最大。

Parameters above the crown usually had the maximal effects on the sap flow change among different measured and calculated parameters of solar radiation intensity , air temperature , air relative humidity and vapor pressure deficit .

由于湿度测量一直是测量领域的一个难点，其中关键为计算饱和水汽压，不同测量机构给出了不同的表示方法，其中比较著名的有七个计算公式。

Humidity measurement has always been a difficulty in measurement field , its key is to calculate the saturation vapor pr ?? re , and some measuring mechanism had given some different ways to calculate it , among them , seven formulas are famous .

在观测的83d中，温度、相对湿度、饱和水汽压和气压在波动中逐渐增大，而风速不断减小，风向由南风逐渐向北风转变；

In the 83 days , all the air temperature , relative humidity , saturated vapor pressure and air pressure increased with some fluctuations , while wind speed decreased gradually , and frequency of calm wind went up and wind direction turned from north to south .

棵间土壤蒸发与总辐射、气温、饱和水汽压差等气象因子呈指数正相关关系，而植株日茎流量与日总辐射呈线性正相关，与空气饱和水汽压差呈对数正相关关系。

It was showed that a positive exponential correlation existed between soil evaporation and meteorological factors such as solar radiation , air temperature and vapor pressure difference . Daily sap flow rate had a positive linear correlation with daily solar radiation , and a logarithm relationship with vapor pressure difference .