采用TCTGC/MS方法对南京紫金山4个典型群落空气中挥发性有机物(VOCs)的组成进行了分析，共检测到萜烯类、醇类、酯类、醛类、酮类、烷烃类、酚类等7类化合物。其中，春、夏季以萜烯类、醇类化合物为主，平均相对含量分别占VOCs总量的2865 %、3851 %；秋、冬季以烷烃类化合物为主，平均相对含量占VOCs总量的5118 %；其他几类化合物相对含量在各季节都较低。群落中萜烯类、醇类和酮类化合物的相对含量各季节从大到小为夏季、春季、秋季、冬季；烷烃类化合物相对含量各季节从大到小为冬季、秋季、春季、夏季；其他几类化合物相对含量在不同的群落中变化规律不一致。在水平空间上，枫香+三角枫群落中萜烯类化合物的相对含量最高（4027 %），其次是马尾松+枫香群落(3136 %)、麻栎+栓皮栎群落(2517 %)，含量最低的是马尾松+麻栎群落(1801 %)；夏、秋季节马尾松+枫香群落中醇类化合物的相对含量最高(4392 %)，而冬、春季节中其相对含量最高的是马尾松+麻栎群落(3125 %)。
Abstract
TCTGC/MS was used to analyze the ingredients of volatile organic compounds(VOCs) of 4 typical plant communities of Zijinshan Mountain in Nanjing, We totally detected 7 compositions,including terpenes, alcohols, ketones, aldehydes, esters, alkanes and phenols. The main volatile constituents in spring and summer were the terpenes and the alcohols, their average relative contents were 2865 %, 3851 % respectively; the main volatile constituents in autumn and winter was the alkanes.Its average relative content accounted for 5118 % of the volatile mass quantity. The relative contents of the other VOCs were low. The order of relative contents of terpenes, alcohols and esters in different seasons were as follows:summer> spring>autumn>winter, and the order of relative content of alkanes in different seasons was winter>autumn>spring >summer. However, the regularity for change of the other VOCs was different in different communities. The relative content of terpenes of Liquidambar formosana+ Acer buergerianum community was the highest in spatial, and its relative contents was 4027 %, the next was Pinus massoniana + L. formosana community(3136 %), Quercus acutissima + Q. variabilis community (2517 %),P. massoniana + Q. acutissima community(1801 %); The relative contents of alcohols of P. massoniana+ L. formosana community was the highest in summer and autumn, and its relative content was 4392 %, whereas in winter and spring, the relative contents of alcohols of P. massoniana + Q. acutissimacommunity was the highest, and its relative content was 3125 %.
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基金
收稿日期：2010-03-29修回日期：2010-06-20基金项目：“十一五”国家科技支撑计划(2006BAD03A0602)作者简介：梁珍海（1965—），博士。*关庆伟(通信作者)，教授。Email:guanjapan999@yahoo.com.cn。
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