Refining Estimates of Tropical Forest Greenhouse Gas Exchange using Plant Traits
利用植物性状对热带森林温室气体交换进行细化估计
基本信息
- 批准号:NE/W006588/1
- 负责人:
- 金额:$ 54.89万
- 依托单位:
- 依托单位国家:英国
- 项目类别:Research Grant
- 财政年份:2022
- 资助国家:英国
- 起止时间:2022 至 无数据
- 项目状态:未结题
- 来源:
- 关键词:
项目摘要
Tropical forests play a crucial role in regulating global concentrations of greenhouse gases, exchanging vast amounts of carbon dioxide (CO2), methane (CH4) and nitrous oxide (N2O) with the atmosphere. The importance of tropical forests as both a source and substantial sink of CO2 is well established, but we know much less about the contribution of tropical forests to global CH4 and N2O budgets. Quantifying CH4 and N2O exchange in tropical forests is important because, although wetland tropical forests are a large source of CH4, free-draining tropical soils are a source of N2O but a sink for CH4. Trees can also act as conduits for greenhouse gases, and our recent work demonstrated that tropical trees on free-draining soils can emit or take up both CH4 and N2O. However, the contribution of trees to tropical forest greenhouse gas budgets is entirely unknown and we do not know whether tropical forest trees on free-draining soils will act as an overall sink or source for CH4 and N2O. We urgently need to address this knowledge gap because tropical forests on free-draining soils cover vast areas of land and are being destroyed or disturbed by human activities at an alarming rate. To quantify the role of tropical trees in global greenhouse gas budgets, we need an approach that allows us to translate local or regional measurements into models that can represent tropical forests across much larger scales. Our project will develop such an approach by quantifying the emissions and uptake of CH4 and N2O by tropical forest soils and trees, and determining the extent to which these greenhouse gas fluxes are influenced by specific characteristics of tropical trees.Trees can influence the production or consumption of greenhouse gases in the soil because root activity and plant litter inputs alter soil chemistry and microbial activity. Similarly, uptake or emission of greenhouse gases through stems, branches and leaves varies widely among tree species with distinct traits such as wood density, growth rate, or foliar chemistry. Our project will establish how such tree traits influence greenhouse gas fluxes by taking detailed measurements of CH4 and N2O fluxes from trees and the surrounding soil. In the first year of the project, we will determine the relationships between greenhouse gas fluxes and differences in soil chemistry or tree traits for six tree species at an intensive study site in tropical forest in Panama, Central America. In the second year of the project, we will expand our studies to multiple sites along a rainfall gradient to assess greenhouse gas fluxes from soils and trees for a larger range of species, and to identify the influence of changes in rainfall. Hence, our field measurements will provide the first ever comprehensive assessment of CH4 and N2O fluxes from tropical trees on free-draining soils, representing an entirely new component of the tropical greenhouse gas budget. In the final year of the project, we will use our data on variation within and among sites, species and individual trees to construct models that estimate total forest greenhouse gas fluxes using a combination of relevant plant traits and rainfall data. We will apply our models to 15 plots along the rainfall gradient to obtain estimates of forest greenhouse gas exchange across the landscape. By using tree traits rather than species identities, our approach will offer a way to estimate greenhouse gas uptake and emissions across wide areas of the tropics, which will improve the representation of tropical forests in global greenhouse gas budgets and inform impact assessments of tropical land-use change.
热带森林在调节全球温室气体浓度方面发挥着至关重要的作用,与大气交换大量的二氧化碳(CO2),甲烷(CH4)和一氧化二氮(N2O)。热带森林作为CO2的源和汇的重要性已经得到公认,但我们对热带森林对全球CH4和N2O预算的贡献知之甚少。量化热带森林中的CH4和N2O交换非常重要,因为尽管湿地热带森林是CH4的一个重要来源,但自由排水的热带土壤是N2O的来源,但却是CH4的汇。树木也可以作为温室气体的管道,我们最近的工作表明,自由排水土壤上的热带树木可以排放或吸收CH4和N2O。然而,树木对热带森林温室气体收支的贡献是完全未知的,我们不知道自由排水土壤上的热带森林树木是否会作为CH4和N2O的总体汇或源。我们迫切需要解决这一知识差距,因为自由排水土壤上的热带森林覆盖了大片土地,正在以惊人的速度被人类活动破坏或干扰。为了量化热带树木在全球温室气体预算中的作用,我们需要一种方法,使我们能够将当地或区域的测量结果转化为能够在更大范围内代表热带森林的模型。我们的项目将通过量化热带森林土壤和树木对CH4和N2O的排放和吸收,并确定这些温室气体通量受热带树木特定特征影响的程度,来开发这样一种方法。树木可以影响土壤中温室气体的产生或消耗,因为根系活动和植物凋落物的输入会改变土壤化学和微生物活性。同样,通过茎、枝和叶吸收或排放的温室气体在具有不同特征的树种之间差异很大,如木材密度、生长速度或叶片化学。我们的项目将通过详细测量树木和周围土壤的CH4和N2O通量来确定这些树木性状如何影响温室气体通量。在项目的第一年,我们将确定温室气体通量和土壤化学或树木性状的差异之间的关系,在中美洲巴拿马热带森林的一个密集的研究地点的六个树种。在该项目的第二年,我们将把研究范围扩大到降雨梯度沿着的多个地点,以评估更多物种的土壤和树木的温室气体通量,并确定降雨变化的影响。因此,我们的实地测量将提供有史以来第一次全面评估CH4和N2O通量从热带树木上自由排水的土壤,代表一个全新的组成部分,热带温室气体预算。在该项目的最后一年,我们将利用我们的数据内和网站之间的变化,物种和个别树木构建模型,估计总森林温室气体通量使用相关的植物性状和降雨量数据的组合。我们将把我们的模型应用于15块沿着降雨梯度的地块,以获得整个景观的森林温室气体交换的估计。通过使用树木特征而不是物种身份,我们的方法将提供一种方法来估计热带地区广泛地区的温室气体吸收和排放,这将提高热带森林在全球温室气体预算中的代表性,并为热带土地利用变化的影响评估提供信息。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
数据更新时间:{{ journalArticles.updateTime }}
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
数据更新时间:{{ journalArticles.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ monograph.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ sciAawards.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ conferencePapers.updateTime }}
{{ item.title }}
- 作者:
{{ item.author }}
数据更新时间:{{ patent.updateTime }}
Emma Sayer其他文献
Root exudate stoichiometry is a key driver of soil N cycling: implications for forest responses to global change
根系分泌物化学计量学是土壤氮循环的关键驱动因素:对森林对全球变化响应的影响
- DOI:
10.1016/j.soilbio.2025.109856 - 发表时间:
2025-09-01 - 期刊:
- 影响因子:10.300
- 作者:
Manon Rumeau;Johanna Pihlblad;Fotis Sgouridis;George Fereday;Michaela K. Reay;Yolima Carrillo;Iain P. Hartley;Emma Sayer;Liz Hamilton;A. Rob Mackenzie;Sami Ullah - 通讯作者:
Sami Ullah
Emma Sayer的其他文献
{{
item.title }}
{{ item.translation_title }}
- DOI:
{{ item.doi }} - 发表时间:
{{ item.publish_year }} - 期刊:
- 影响因子:{{ item.factor }}
- 作者:
{{ item.authors }} - 通讯作者:
{{ item.author }}
{{ truncateString('Emma Sayer', 18)}}的其他基金
Impacts of climate-driven evolution on plant-soil interactions and ecosystem functioning
气候驱动的进化对植物-土壤相互作用和生态系统功能的影响
- 批准号:
NE/P01335X/1 - 财政年份:2017
- 资助金额:
$ 54.89万 - 项目类别:
Research Grant
Biodiversity, ecosystem functions and policy across a tropical forest modification gradient
热带森林改造梯度的生物多样性、生态系统功能和政策
- 批准号:
NE/K016164/2 - 财政年份:2014
- 资助金额:
$ 54.89万 - 项目类别:
Research Grant
Biodiversity, ecosystem functions and policy across a tropical forest modification gradient
热带森林改造梯度的生物多样性、生态系统功能和政策
- 批准号:
NE/K016164/1 - 财政年份:2013
- 资助金额:
$ 54.89万 - 项目类别:
Research Grant
相似海外基金
Towards establishing accurate estimates of national chronic hepatitis B prevalence and undiagnosed proportion in Canada
准确估计加拿大全国慢性乙型肝炎患病率和未确诊比例
- 批准号:
488763 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Operating Grants
The Phenomenon of Stem Cell Aging according to Methylation Estimates of Age After Hematopoietic Stem Cell Transplantation
根据造血干细胞移植后甲基化年龄估算干细胞衰老现象
- 批准号:
23K07844 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Grant-in-Aid for Scientific Research (C)
FUTURE-FLOOD: New estimates of evolving UK flood risk for improved climate resilience
未来洪水:对英国不断变化的洪水风险的新估计,以提高气候适应能力
- 批准号:
NE/X014134/1 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Research Grant
CAREER: Improving Estimates of Changing Firn Meltwater Storage and Flux in Temperate Glacier Systems
职业:改进对温带冰川系统中冰雪融水储存和通量变化的估计
- 批准号:
2239668 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Continuing Grant
Real-World Data Estimates of Racial Fairness with Pharmacogenomics-Guided Drug Policy
以药物基因组学为指导的药物政策对种族公平性的真实世界数据估计
- 批准号:
10797705 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Topological Consequences of Distortion-type Estimates
失真型估计的拓扑后果
- 批准号:
2247469 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Continuing Grant
Physical-Space Estimates on Black Hole Perturbations
黑洞扰动的物理空间估计
- 批准号:
2306143 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Standard Grant
CAS: Estimates of the decay of diffusion induced flows in strongly stratified fluids and ergodic mixing properties of solutes driven by randomly moving walls in viscous fluids.
CAS:对强分层流体中扩散诱导流的衰减以及粘性流体中随机移动壁驱动的溶质的遍历混合特性的估计。
- 批准号:
2308063 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Standard Grant
al-time epidemiological intelligence to inform control of SARS-CoV-2: improving the precision, validity, and granularity of estimates of the effective reproduction number in Canada
实时流行病学情报为 SARS-CoV-2 的控制提供信息:提高加拿大有效传染数估计的精确度、有效性和粒度
- 批准号:
495568 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Miscellaneous Programs
Methods for deterministic treatment effect estimates for clinical trials with missing data
缺失数据的临床试验的确定性治疗效果估计方法
- 批准号:
2886293 - 财政年份:2023
- 资助金额:
$ 54.89万 - 项目类别:
Studentship