Bowen ratio

Measurement of Ecosystem Surface Flux : Introduction of Multi - channel Bowen Ratio Measuring Instrument

生态系统地表通量测量&多通道波文比观测仪介绍

The results showed that the soil water had controlling effects on the Bowen Ratio . There was negative liner correlation between the Bowen Ratio and the Relative soil moisture content in 0 ~ 60cm .

结果表明，土壤水分对波文比具有控制性效应，波文比与0～60cm土层土壤相对含水量呈线性负相关。

Method for Measurement of Ammonia Volatilization from Large Area Field by Bowen Ratio System

利用Bowen比仪测定大面积农田土壤氨挥发的方法研究

The more sophisticated Bowen ratio or profile observation gives the more precise information .

愈精确的Bowen比或者廓线的观测能给出愈精确的信息。

Comparative study of crop evapotranspiration measured by Bowen ratio and lysimeter

波文比仪与蒸渗仪测定作物蒸发蒸腾量对比

The Bowen ratio over oasis is within 1-2 , which is larger than that over desert ( or Gobi ) .

Bowen比在白天1～2之间，比一般灌溉地区要大。

The Bowen ratio of oasis is about 1 / 20 that of Gobi , showing an obvious difference in climatic features between oasis and Gobi .

绿洲的Bowen比大约是周围荒漠戈壁的1/20，相差一个量级，这说明绿洲和周围荒漠的气候特征相差十分明显。

In this paper , the principle of using Bowen ratio system to measure ammonia volatilization from large area field , the details of installation of Bowen ratio system , and the credibility degree of the method were discussed .

本文介绍Bowen比仪测定大面积农田土壤氨挥发的基本原理、仪器安装的细节和方法的可靠程度，以及利用该方法进行的5次田间试验的测定结果。

Evapotranspiration and CO 2 fluxes were measured using Bowen ratio energy balance method in winter wheat field in North China Plain from April to June 1996 and instantaneous water use efficiency ( WUE ) was obtained .

1996年4月～6月在华北平原采用波文比－能量平衡法测定冬小麦田蒸散和CO2通量，求取冬小麦瞬时水分利用效率。

The flux of evapotranspiration and turbulent heat exchange are 86.2 % of the net radiation of the stand on average . The mean Bowen ratio is 0.5500 . The energy consumed by soil heat exchange is 13.4 % .

蒸散耗热和湍流热交换占净辐射收入的86.2%，平均波文比为0.5500，土壤热通量约占净辐射收入的13.4%。

Aerodynamic technique , Bowen ratio / energy balance method ( BREB ) and close chamber method combined with gas chromatography ( GC ) analysis were used to measure nitrous oxide ( N 2 O ) fluxes in a crop field .

采用空气动力学方法、波文比/能量平衡法及密闭箱法结合气相色谱分析对农田N2O通量进行了测定。

Instead of being modeled , ET can be measured in situ in which Bowen ratio systems , Eddy - covariance systems , or lysimeters are used . 2 . We can get the ellipticity and linearity from the eigenvalues of the covariance matrix .

也可以通过涡度相关仪、波纹比仪、蒸渗仪等实测获得。（2）由矩阵的特征值，求取椭圆率和线性因子。

The mean Bowen ratio of daily cumulation from June to September in both 2004 and 2005 was about 0.15.The diurnal patterns of carbon flux , sensible heat flux and latent heat flux in reed wetland were single kurtosis and single vale , and the maximum value appeared at noon .

2004年和2005年6~9月的日累积值波文比平均值均为0.15。

The Bowen ′ s ratio was 13.16 in desert .

其Bowen比为13.16。