Land Ocean Carbon Transfer (1-year extension)

陆地海洋碳转移（延长1年）

• 批准号: NE/V013211/1
• 负责人: Daniel Lapworth
• 金额: $ 6.93万
• 依托单位: British Geological Survey
• 依托单位国家: 英国
• 项目类别: Research Grant
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 已结题
• 来源: https://gtr.ukri.org/projects?ref=NE%2FV013211%2F1
• 关键词: Land; Ocean; Carbon; Transfer; year

The Land Ocean Carbon Transfer (LOCATE) programme has established genuinely new and highly effective collaborations across NOC, CEH, PML and BGS to deliver new understanding of terrigenous dissolved organic matter (tDOM) fluxes across streams, rivers, estuaries and into coastal seas and the global ocean. These fluxes collectively represent a significant and changing, yet poorly understood, component of the global C cycle. Together, we have already achieved the following, major advances: 1) the first internally consistent integration of tDOM fluxes to the tidal extent of GB rivers, demonstrating that coniferous forestry in uplands enhances this flux; 2) the largest study of tDOM transport across temperate estuarine waters, highlighting that the composition and fate of this material is strongly influenced by human activities on land; 3) the most comprehensive assessment of the distribution of tDOM throughout the North Sea, identifying that the bulk of tDOM exported from the Northwest European and Scandinavian landmasses must be buried or remineralized internally, with potential losses to the atmosphere; 4) the development of a fundamentally new model, UniDOM, that unifies concepts, state variables and parameterisations of tDOM turnover across the land-ocean aquatic continuum (LOAC). Our developments in understanding the fluxes and fate of tDOM have brought into sharp focus how little is known about greenhouse gas (GHGs; CO2, CH4, N2O) fluxes and the processes that control these in aquatic ecosystems. Our key stakeholders, including BEIS and major water companies, recognise that this lack of understanding hinders national GHG emissions reporting and the development of sustainable land- and water management policies to enable the UK government to achieve net-zero GHG emissions by 2050. Building upon our previous achievements, our proposed extension activities aim to:1) develop a GHG budget for the GB LOAC, 2) understand the biotic and abiotic processes that control these, and 3) assess the influence of human activities. We will achieve these through a series of interconnected objectives that combine desk-based syntheses and modelling activities, analysis of archived samples from our original year-long GB-scale field programme, use of our legacy focal catchments to establish a suite of baseline observations, and stakeholder engagement. We will continue to work with our diverse range of regional, national and international stakeholders to identify where and how this new understanding can achieve beneficial outcomes for policies and practices relating to C sequestration and climate regulation.

陆地海洋碳转移 (LOCATE) 计划在 NOC、CEH、PML 和 BGS 之间建立了真正新颖且高效的合作，以提供对跨溪流、河流、河口以及进入沿海海洋和海洋的陆源溶解有机物 (tDOM) 通量的新认识。全球海洋。这些通量共同代表了全球碳循环的一个重要且不断变化但人们知之甚少的组成部分。我们共同取得了以下重大进展：1）首次将 tDOM 通量内部一致地整合到英国河流的潮汐范围内，证明高地的针叶林增强了这种通量； 2) 跨温带河口水域 tDOM 迁移的最大规模研究，强调这种物质的成分和归宿受到陆地上人类活动的强烈影响； 3) 对整个北海 tDOM 分布进行最全面的评估，确定从西北欧和斯堪的纳维亚大陆出口的大部分 tDOM 必须在内部掩埋或再矿化，从而可能损失到大气中； 4) 开发一个全新的模型 UniDOM，该模型统一了陆地-海洋水生连续体 (LOAC) 中 tDOM 周转的概念、状态变量和参数化。我们在了解 tDOM 通量和命运方面的进展，使人们清楚地认识到人们对水生生态系统中温室气体（GHG；CO2、CH4、N2O）通量以及控制这些通量的过程知之甚少。我们的主要利益相关者，包括 BEIS 和主要自来水公司，认识到这种缺乏了解阻碍了国家温室气体排放报告和可持续土地和水资源管理政策的制定，从而使英国政府能够在 2050 年实现温室气体净零排放。基于我们之前的成就，我们提出的推广活动旨在：1) 为 GB LOAC 制定温室气体预算，2) 了解控制这些过程的生物和非生物过程，以及 3) 评估人类活动的影响。我们将通过一系列相互关联的目标来实现这些目标，这些目标结合了基于案头的综合和建模活动、对我们最初长达一年的全球规模实地计划的存档样本进行分析、利用我们遗留的重点流域建立一套基线观测，和利益相关者的参与。我们将继续与不同的区域、国家和国际利益相关者合作，以确定这种新的认识在哪里以及如何能够为与碳封存和气候调节相关的政策和实践取得有益的成果。

项目成果

Dissolved inorganic carbon export from rivers of Great Britain: Spatial distribution and potential catchment-scale controls

• DOI: 10.1016/j.jhydrol.2022.128677
• 发表时间: 2022-11
• 期刊: Journal of Hydrology
• 影响因子: 6.4
• 作者: A. Tye;J. Williamson;H. Jarvie;N. Dise;D. Lapworth;D. Monteith;R. Sanders;D. Mayor;Michael Bowes;Michael Bowes;A. Burden;N. Callaghan;G. Farr;S. Felgate;S. Gibb;P. Gilbert;G. Hargreaves;P. Keenan;V. Kitidis;M. Jürgens;Adrian P. Martin;I. Mounteney;P. Nightingale;M. Glória Pereira;J. Olszewska;A. Pickard;Andrew P. Rees;B. Spears;M. Stinchcombe;D. White;P. Williams;F. Worrall;C. Evans

Influence of land-use on the dynamics, quantity and composition of the organic matter transported across estuaries

土地利用对跨河口输送有机物的动态、数量和组成的影响

• DOI: 10.5194/egusphere-egu21-1298
• 发表时间: 2021
• 作者: Garcia-Martin E