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中文摘要：
利用2008年7月和2009年2—3月在珠三角地区开展的挥发性有机化合物（VOCs）和微气象学综合实验观测资料,分别应用近地面层通量廓线关系法和松弛涡旋累积法（REA）计算了荔枝林下垫面VOCs冠层尺度通量。结果表明：荔枝林的主要生物挥发性有机化合物（BVOCs）排放为异戊二烯,其排放有着明显的季节变化和日变化。荔枝林生长季白天的典型异戊二烯通量为0.932 nmol/（m2.s）,非生长季植物排放不显著。该结果为使用微气象学方法获取VOCs通量提供了借鉴。
英文摘要：
Observations of VOCs concentration were conducted at a litchi plantation in the Pearl River Delta in July 2008 and February-March 2009 respectively.VOCs fluxes were estimated based on the relationship of flux-gradient and REA method using the VOCs concentration data.Statistical evidence indicates that the major emission matter is isoprene with a typical daytime mean flux 0.932 nmol/（m2.s） in the growing season over the litchi plantation.While in the non growing season,the flux is negligible.This study provides a reliable reference not only for emission rates for litchi and manmade plantation,but also for usage of micrometeorological methods to measure VOCs fluxes.
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