Journal
ENVIRONMENTAL SCIENCE & TECHNOLOGY
Volume 55, Issue 6, Pages 3494-3504Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.est.0c06421
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Funding
- Stanford Woods Institute for the Environment
- California Strategic Growth Council
- California Strategic Growth Council's Climate Change Research Program
- California Climate Investments
- AmeriFlux Management Project [DEAC0205CH11231]
- United States National Science Foundation [1752083]
- California Agricultural Experiment Station
- NSF DEB [1552747]
- Direct For Biological Sciences
- Division Of Environmental Biology [1552747] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys
- Directorate For Engineering [1752083] Funding Source: National Science Foundation
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This article discusses how to use eddy covariance measurement systems for ecosystem-scale flux measurements and determine which natural climate solutions strategies are most suitable for such measurements. The authors propose three different deployment types: pilot, upscale, and monitor, to chart a workable path forward for future research.
Eddy covariance measurement systems provide direct observation of the exchange of greenhouse gases between ecosystems and the atmosphere, but have only occasionally been intentionally applied to quantify the carbon dynamics associated with specific climate mitigation strategies. Natural climate solutions (NCS) harness the photosynthetic power of ecosystems to avoid emissions and remove atmospheric carbon dioxide (CO2), sequestering it in biological carbon pools. In this perspective, we aim to determine which kinds of NCS strategies are most suitable for ecosystem-scale flux measurements and how these measurements should be deployed for diverse NCS scales and goals. We find that ecosystem-scale flux measurements bring unique value when assessing NCS strategies characterized by inaccessible and hard-to-observe carbon pool changes, important non-CO2 greenhouse gas fluxes, the potential for biophysical impacts, or dynamic successional changes. We propose three deployment types for ecosystem-scale flux measurements at various NCS scales to constrain wide uncertainties and chart a workable path forward: pilot, upscale, and monitor. Together, the integration of ecosystem-scale flux measurements by the NCS community and the prioritization of NCS measurements by the flux community, have the potential to improve accounting in ways that capture the net impacts, unintended feedbacks, and on-the-ground specifics of a wide range of emerging NCS strategies.
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