Regional Integration of CH4 Emission Studies (RICHES)

甲烷排放研究的区域一体化 (RICHES)

• 批准号: NE/D008247/1
• 负责人: Vincent Gauci
• 金额: $ 10.22万
• 依托单位: The Open University
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2007
• 资助国家: 英国
• 起止时间: 2007 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FD008247%2F1
• 关键词: Regional; Integration; CH4; Emission; Studies

This project investigates how pollution, in the form of acid rain (globally a growing problem), can influence the emission of the powerful greenhouse gas methane (CH4) from wetlands, the largest individual source of this gas. We will tackle this important question by performing a regional integration of the many CH4 emission studies that have been published in the past 2 decades together with data on pollution in these areas. Recent experiments where acid rain sulphur pollution has been simulated in wetlands have shown that these interactions can have an important effect on the emission of CH4 at the global scale and may be offsetting the growth of methane from the wetland CH4 source that should otherwise be occurring through global warming. These assessments are based on the findings of a limited number of experimental studies. The draw back from such studies is that they may replicate conditions only at the beginning of a period of increased pollution rather than the long-term ecosystem response. There are also effects of other pollutants such as reactive nitrogen (nitrate and ammonia) that may have important effects but are difficult to quantify without long-term (e.g. decade long) experiments. Our approach will treat the numerous studies that have monitored CH4 emission from a wide range of wetlands, spanning existing pollution gradients, as a regional/global experiment where the long-term impacts of pollution are more accurately represented.

该项目调查了酸雨（全球日益严重的问题）形式的污染如何影响湿地中强大的温室气体甲烷（CH 4）的排放，甲烷是这种气体的最大来源。我们将通过对过去20年发表的许多甲烷排放研究以及这些地区的污染数据进行区域整合来解决这个重要问题。最近在湿地中模拟酸雨硫污染的实验表明，这些相互作用可能对全球范围内的甲烷排放产生重要影响，并可能抵消湿地甲烷源的甲烷增长，否则将通过全球变暖发生。这些评估是基于数量有限的实验研究的结果。这种研究的缺点是，它们可能只复制污染增加时期开始时的情况，而不是长期的生态系统反应。还有其他污染物的影响，如活性氮（硝酸盐和氨），可能有重要的影响，但很难量化没有长期（如十年）的实验。我们的方法将处理众多的研究，监测甲烷排放量从广泛的湿地，跨越现有的污染梯度，作为一个区域/全球的实验，污染的长期影响更准确地表示。