The present and future greenhouse gas budget of energy crops in the UK

英国能源作物当前和未来的温室气体预算

基本信息

批准号：
NE/F015682/1
负责人：
Liz Baggs
金额：
$ 22.65万
依托单位：
University of Aberdeen
依托单位国家：
英国
项目类别：
Research Grant
财政年份：
2008
资助国家：
英国
起止时间：
2008 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=NE%2FF015682%2F1
关键词：
present future greenhouse gas budget

项目摘要

Bioenergy is a key component of the UK Government's plans for tackling climate change. One of the major causes of increased atmospheric CO2 levels is the burning of fossil fuels releasing carbon that has been stored for centuries back into the atmosphere. In order to cut our use of fossil fuels we can grow crops for energy. Bioenergy (or 'biomass') crops are 'carbon neutral'; when burned to generate electricity they only release the same amount of CO2 back into the atmosphere as they fixed. Thus no 'extra' CO2 is released into the atmosphere. Miscanthus and short rotation coppice (SRC) willow are the dominant bioenergy crops grown in the UK. They differ from more traditional current arable crops in terms of their physiology, nutrient requirements and management. The impact of such differences on biogeochemical cycling and soil microbiology, particularly in relation to the production and oxidation of the greenhouse gases nitrous oxide (N2O) and methane (CH4), is unknown. It is essential to determine this in order to underpin future management of bioenergy cropping systems and to accurately project future greenhouse gas inventories. In this project we will measure emissions of CO2, CH4 and N2O from Miscanthus and SRC willow, and compare these to emissions from adjacently growing conventional crops. We will further investigate the processes producing N2O and quantify CH4 oxidation rates using stable isotope techniques under a range of controlled environment and managment conditions, and using molecular techniques will link these emissions to any differences or changes in the microbial population responsible. This information will be used to develop the JULES community model of CEH, parameterising water, energy, carbon and greenhouse gas balances for these bioenergy crops, and to simulate greenhouse gas emissions for UK land if converted to growing Miscanthus and SRC willow under present and future climates.

生物能源是英国政府应对气候变化计划的关键组成部分。大气中二氧化碳水平增加的主要原因之一是燃烧化石燃料释放碳的碳储存已有数百年的历史。为了减少我们对化石燃料的使用，我们可以种植农作物以获取能量。生物能源（或“生物量”）作物是“碳中性”；当燃烧以发电时，它们仅在固定的情况下将相同数量的二氧化碳释放回大气中。因此，没有“额外”的二氧化碳被释放到大气中。 Miscanthus和短期旋转Coppice（SRC）柳树是英国种植的主要生物能源作物。在生理学，营养需求和管理方面，它们与最传统的耕作作物不同。这种差异对生物地球化学循环和土壤微生物学的影响，尤其是与温室气体一氧化二氮（N2O）和甲烷（CH4）的产生和氧化有关的影响。确定这一点至关重要，以支持生物能源裁剪系统的未来管理并准确投影未来的温室气体库存。在这个项目中，我们将测量Miscanthus和Src Willow的CO2，CH4和N2O的排放，并将其与相邻生长的常规作物的排放进行比较。我们将进一步研究在一系列受控环境和管理条件下使用稳定的同位素技术量化CH4氧化速率的过程，并使用分子技术将这些排放量与负责的微生物种群的任何差异或变化联系起来。这些信息将用于开发CEH的Jules社区模型，这些生物能源作物的参数水，能源，碳和温室气体平衡，并在当下和未来的气候下转换为生长的Miscanthus and Src Willow，以模拟英国土地的温室气体排放。

项目成果

期刊论文数量（4）

专著数量（0）

科研奖励数量（0）

会议论文数量（0）

专利数量（0）

Soil microbial sources of nitrous oxide: recent advances in knowledge, emerging challenges and future direction

DOI：
10.1016/j.cosust.2011.08.011
发表时间：
2011-10-01
期刊：
CURRENT OPINION IN ENVIRONMENTAL SUSTAINABILITY
影响因子：
7.2
作者：
Baggs, Elizabeth M.
通讯作者：
Baggs, Elizabeth M.

Nitrous oxide emissions from soils: how well do we understand the processes and their controls?

DOI：
10.1098/rstb.2013.0122
发表时间：
2013-07-05
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
0
作者：
Butterbach-Bahl K;Baggs EM;Dannenmann M;Kiese R;Zechmeister-Boltenstern S
通讯作者：
Zechmeister-Boltenstern S

The Nitrogen Cycle