HEИндивидуална стипендия2024–2026

OASIS · Optimizing the Adsorption of water vapour to enhance the Sequestration of Inorganic carbon and phototrophs activity in dry Soils

„Хоризонт Европа“ — Действия „Мария Склодовска-Кюри“

Период: 2024-01-01 → 2026-12-31
Финансиране от ЕС: 261 381 €
Участници: 2
Схема: HORIZON-TMA-MSCA-PF-GF

Линиите свързват координатора с партньорите.

Накратко на български

Връзката между влагата във въздуха, минералите в почвата и растенията в сухите райони се анализира чрез измерване на потоците от въглерод и вода. Това помага да се разбере как тези екосистеми съхраняват въглерод и как реагират на климатичните промени.

Този кратък обзор е генериран от изкуствен интелект

Кратко обяснение, генерирано от езиков модел по текста на CORDIS. Оригиналът е по-долу.

Резултати накратко

Optimizing the Adsorption of water vapour to enhance the Sequestration of Inorganic carbon and phototrophs activity in dry Soils

Dryland ecosystems cover a substantial fraction of the Earth’s land surface and are projected to expand under climate change. Despite their global importance, their role in carbon and water cycling remains highly uncertain, partly due to challenges associated to measuring and understanding abiotic fluxes in extremely dry conditions and episodic biological activity. Improving the understanding of carbon storage and vulnerability in these systems is therefore essential for both climate mitigation and adaptation strategies. The OASIS project was initially motivated by the hypothesis that atmospheric water vapour adsorption could influence soil carbon dynamics in dry environments, potentially interacting with mineral processes such as carbonation. In this context, enhanced rock weathering was considered as a possible strategy to increase reactive mineral surfaces and promote inorganic carbon sequestration. At the same time, drylands are often dominated by vegetation adapted to water limitation, such as CAM plants, whose contribution to ecosystem-scale carbon fluxes remains insufficiently captured by conventional monitoring approaches. During the course of the project, it became evident that a major scientific bottleneck lies in the capacity to robustly observe and disentangle the different biological and physical processes contributing to soil–plant–atmosphere exchanges under dry conditions. The project pathway was therefore reoriented towards establishing a robust experimental framework to quantify the relative magnitude of carbon and water flux components, assess ecosystem responses to climate extremes, and evaluate the vulnerability and potential of dryland ecosystems as carbon sinks.

Текст от CORDIS, на английски · Данни: CORDIS, © Европейски съюз

Цел на проекта

Mineral carbonation is based on the reaction of CO2 with metal oxide bearing materials to precipitate insoluble carbonates, with calcium being one of the most attractive metals. While the development of industrial carbonation processes has been recommended to mitigate climate change, its natural occurrence in soils and its potential enhancement through management practices has received little attention so far. Since natural carbonation is commonly considered to be a slow process, spreading powder of non-carbonated, calcium-bearing minerals over soils, a strategy known as enhanced rock weathering (ERW), is a promising way to accelerate it. While humid tropical areas are generally regarded as having the greatest potential for ERW, recent evidence suggests that carbonation may also be significant in drylands, driven by water vapour adsorption (WVA) by soil at night, potentially representing an overlooked long-term carbon sink. The general objective of the OASIS project is to assess the potential of ERW in dryland soils. Its main underlying assumption is that optimizing WVA with amendment of highly adsorbent ground rock will maximize the carbonation process while reducing the dependence of phototrophic organisms on rainfall or irrigation. To tackle this objective, OASIS will implement field and mesocosm manipulative experiments using cutting-edge infrastructure to control environmental conditions and simulate climate change. These will be coupled to state-of-the-art measurements and isotopic tracing of soil-atmosphere water vapor and CO2 fluxes. This research will contribute to filling several gaps in our understanding of natural carbonation and its interactions with WVA, organisms, and climate change. It is also expected to provide solid arguments to implement conservation measures and sustainable agricultural practices in drylands or seasonally dry lands to protect and increase water and carbon resources, in line with several European and global guidelines.

Оригинален текст от CORDIS (на английски).

Участници

UNIVERSIDAD DE ALICANTE · AlicanteКоординаторИспания
ARIZONA BOARD OF REGENTS · TempeСъединени щати