精品文档---下载后可任意编辑东亚地区土地利用类型的改变对 BVOCs 排放的影响的开题报告摘要：挥发性有机物（BVOCs）是由植物自然释放的一类复杂有机物质，它们对大气化学和环境质量有着重要影响。在地球气候变化的背景下，东亚地区的土地利用类型正在发生较大的变化，这对夏季的 BVOCs 排放量和 BVOCs 的组成、浓度等产生着影响，但这方面的讨论还比较少。本文通过文献综述和分析，探讨东亚地区主要土地利用类型（如森林、草地、农田、城市等）对 BVOCs 的排放影响，以及不同类型植物的BVOCs 组成和浓度变化。结果表明，东亚地区不同土地利用类型间存在显著差异的 BVOCs 排放量和组成；由于城市化进程，城市地区的BVOCs 排放量普遍较高，该区域针叶林的 BVOCs 排放量也比欧美地区更高，草地和农田地区 BVOCs 排放量则相对较低。同时，本文也对未来BVOCs 讨论的前景进行了展望。关键词：挥发性有机物；东亚；土地利用；排放量；组成Abstract:Volatile organic compounds (BVOCs) are a complex class of organic substances released naturally by plants, which have important influences on atmospheric chemistry and environmental quality. With the background of global climate change, the land use types in East Asia are undergoing significant changes, which affect the BVOCs emissions in summer, such as the composition and concentration of BVOCs. However, this field of research is relatively insufficient. Through literature review and analysis, this paper explores the effects of main land use types (such as forests, grasslands, farmlands, and cities) in East Asia on BVOCs emissions, as well as BVOCs composition and concentration changes among different types of plants. The results show that there are significant differences in BVOCs emissions and compositions among different land use type in East Asia. Due to urbanization, the BVOCs emissions in urban areas are generally higher, the BVOCs emissions in coniferous forests are also higher than those in Europe and America, while the BVOCs emissions in grassland and farmland areas are relatively low. Meanwhile, this paper also looks forward to the future prospects of BVOCs research.精品文档---下载后可任意编辑Keywords: volatile organic compounds; East Asia; land use; emissions; composition
