概括
植物叶子从空气中吸收大量的氨,即使在低大气水平. 氨的吸收率每天波动,并因植物物种而异,但不受肥力的影响.
科学领域:
- 植物生理学 植物生理学
- 环境科学环境科学
- 大气中的化学成分
背景情况:
- 氨是一种关键的大气污染物和营养物质.
- 了解植物与空气的相互作用对于环境科学和农业科学至关重要.
研究的目的:
- 在环境大气度下量化植物叶子对氨的吸收.
- 研究影响植物吸收氨的因素,包括日间变化,物种差异和肥力.
主要方法:
- 使用密封的生长室来监测单一植物苗木上流的空气流中的氨度变化.
- 测量了氨从空气流中消失的速度,以确定植物吸收率.
主要成果:
- 植物叶表现出大量吸收大气中的氨,即使在低度.
- 氨的吸收率表现出相当大的每日波动.
- 在不同的植物物种中,吸收率有所不同.
- 一种物种内的肥水平并没有显著影响氨吸收率.
结论:
- 植物叶子在从大气中去除氨气方面发挥着重要作用.
- 日常模式和特定物种的特征是植物吸收氨的关键决定因素.
- 植物中的可用性似乎不是从空气中吸收氨的限制因素.
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