主要介绍涡度相关技术测定湍流通量的原理，及其在农田蒸散量测定方面的国内外应用研究进展。

The principle of measuring turbulent flux by eddy covariance system and its application to field evapotranspiration measurement were introduced in this paper.

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结果表明，瞬变的涡度通量辐合的异常有抵消辐散风所产生的涡度源异常的趋势；

The results show that the anomalies of transient vorticity flux convergences tend to cancel the anomaly of vorticity sources generated by divergent winds.

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结果表明，瞬变的涡度通量辐合的异常有抵消或耗散辐散风产生的涡度源异常的趋势；

The results show that the anomaly of the transient vorticity flux convergence tends to cancel or dissipate the anomaly of the vorticity sources generated by divergent wind.

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