Engineering the soil carbon sink: a novel approach to carbon emission abatement

土壤碳汇工程：一种减少碳排放的新方法

基本信息

批准号：
EP/F02777X/1
负责人：
David Manning
金额：
$ 30.54万
依托单位：
Newcastle 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=EP%2FF02777X%2F1
关键词：
Engineering soil carbon sink novel

项目摘要

Soils are the greatest land-based reservoir for carbon on the planet, containing three times as much carbon as do plants. Soil-atmosphere interactions exchange a third more CO2 with the atmosphere than do interactions between the atmosphere and the ocean. Soil thus plays a very significant role in controlling atmospheric CO2 levels.In this context, we have an opportunity to engineer soil systems so that the amount of CO2 that they take up is maximised. This a form of carbon abatement that is very cheap, because it is passive (there are no energy inputs once constructed). It is directly analogous to the use of constructed wetlands for the treatment of polluted waters. Our aim is to assess the feasibility of this process for widespread application in the UK, and to assess the associated costs and benefits.We will investigate the soil carbon contents of artificial soils from a number of sources. We will use trial plots constructed for a completely different purpose in 2002 and which we have recently shown to accumulate soil carbonates (the first such found in the UK). We will grow brassicas, as a representative bioenergy crop, in artificial soils in the lab and greenhouse, using calcium-rich wastes as part of the soil. We will sample brownfield and other remediated sites of known age and history. In all cases we will determine the carbon content of the soil in terms of different C reservoirs, and fingerprint each one using stable isotopes so that we can trace its plant origin.Using the information from the samples, we will be able to determine the lifetime of the different soil carbon reservoirs. We will be able to estimate how quickly they build up, if they are stable, and if they transform from one into another. Using this information we can model the behaviour of carbon in artificially planted systems.In the context of UK land use and the arisings of calcium-rich materials that could be used to accelerate the process, we will assess the possible benefits of designing soil systems to act as sites for the passive sequestration of atmospheric CO2. If the process appears to be feasible, we will use contacts initially in NE England to exploit our findings, through Newcastle's Science City which links us to industry, and through the University's CREEL project, funded by One North East and intended to act as an outreach facility for renewable energy.

土壤是地球上碳的最大陆基水库，其含量是植物的三倍。与大气与海洋之间的相互作用相比，土壤 - 大气相互作用与大气的交换多三分之一。因此，土壤在控制大气二氧化碳水平中起着非常重要的作用。在这种情况下，我们有机会设计土壤系统，以便最大化它们所吸收的二氧化碳量。这种消除碳的形式非常便宜，因为它是被动的（曾经构建的能量输入没有）。它直接类似于使用建造的湿地来处理污染水。我们的目的是评估这一过程在英国广泛应用的可行性，并评估相关的成本和收益。我们将研究来自许多来源的人造土壤的土壤碳含量。我们将在2002年使用为完全不同的目的构建的试验图，并最近证明它积累了土壤碳酸盐（在英国发现的第一个）。我们将在实验室和温室中的人造土壤中种植诸如代表性的生物能源作物，并使用富含钙的废物作为土壤的一部分。我们将为Brownfield和其他已知年龄和历史的补救场所采样。在所有情况下，我们都将根据不同的C储层来确定土壤的碳含量，并使用稳定的同位素来确定每个土壤的碳含量，以便我们可以追踪其植物的起源。使用样品中的信息，我们将能够确定不同土壤碳储层的寿命。我们将能够估计如果它们稳定，如果它们从另一个转变为另一个，它们会稳定的速度。使用这些信息，我们可以对碳在人为种植的系统中的行为进行建模。在英国土地使用以及可用于加速过程的富含钙的材料的兴起的背景下，我们将评估设计土壤系统的可能益处，以充当大气CO2的被动序列地点。如果该过程似乎是可行的，我们将使用纽卡斯尔科学城（Newcastle's Science City），通过将我们与工业联系起来的纽卡斯尔科学城（Newcastle Science City），并通过该大学的Creel项目来利用我们的发现，并通过一个东北部资助，并打算充当可再生能源的外展设施。