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Transient increases in methylbutenol emission following partial defoliation of Pinus ponderosa

机译：黄松部分脱叶后甲基丁烯释放的瞬时增加

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摘要

Methybutenol (MBO or 2-methyl-3-butene-2-ol) is a five-carbon alcohol produced and emitted in large amounts by many species of pine native to Western North America. Upon entering the atmosphere, MBO may engage in a series of chemical reactions which may ultimately lead to the production of tropospheric ozone which is a damaging pollutant. While the physical factors controlling MBO emission are well understood, the ecological factors controlling MBO emission have yet to be addressed. This study examines the response of MBO emission from Pinus ponderosa to herbivory simulated by needle clipping. Following defoliation early in the season, MBO emission from some plants tripled but similar increase did not occur later in the season. Anecdotal evidence suggests that the variable response of MBO emission to defoliation may have been due to the action of insect herbivores early in the season, or may have been due to phenological changes in the plants over the course of the season.
机译：甲基丁烯醇（MBO或2-甲基-3-丁烯-2-醇）是五种碳醇，由北美西部原生的许多松树产生并大量排放。进入大气后，MBO可能会发生一系列化学反应，最终可能导致产生对流层臭氧，这是一种有害污染物。虽然控制MBO排放的物理因素已广为人知，但控制MBO排放的生态因素尚未解决。这项研究检查了针刺模拟的黄松松林MBO排放对草食动物的响应。在季节初进行脱叶后，一些植物的MBO排放量增加了两倍，但在季节后期并未发生类似的增加。轶事证据表明，MBO释放对落叶的变化响应可能是由于季节初昆虫食草动物的作用，或者可能是由于整个季节植物的物候变化所致。

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