Valach, Alex Constantin; Kasak, Kuno; Hemes, Kyle S.; Szutu, Daphne; Verfaillie, Joe; Baldocchi, Dennis D. (2021). Carbon Flux Trajectories and Site Conditions from Restored Impounded Marshes in the Sacramento‐San Joaquin Delta In: Krauss, Ken W.; Zhu, Zhiliang; Stagg, Camille L. (eds.) Wetland Carbon and Environmental Management. Geophysical Monograph Series: Vol. 267 (pp. 247-271). Hoboken: John Wiley & Sons 10.1002/9781119639305.ch13
Full text not available from this repository. (Request a copy)Wetlands can sequester carbon over the long term, providing natural climate solutions. This requires that existing carbon stocks be maintained and additional greenhouse gas (GHG) emissions are outweighed by carbon sequestration. We analyzed 25 site-years of continuous CO 2 and methane fluxes by eddy covariance from 4 restored wetlands to detect long-term trends and estimate their GHG budgets. Sites showed large interannual variability with no clear trends in CO 2 fluxes beyond the initial uptake phase during vegetation establishment following restoration. Methane emissions followed either decreasing or increasing trends likely because of variable site conditions, such as water level fluctuations and soil mineral concentrations. Several site-years were GHG neutral or sinks depending on the global warming potential used. Carbon sink sites were projected to offset the radiative forcing from methane emissions after 62 to 202 years. We compared and contrasted restoration design and management strategies based on this and previous studies at these sites to balance the climate mitigation potentials with other beneficial wetland services. We conclude that these restored wetlands indeed provide climate mitigation benefits provided they are appropriately maintained over the long term (100 years), as poor management can cause large carbon losses even decades after restoration.
Item Type: |
Book Section (Book Chapter) |
|---|---|
Division/Institute: |
School of Agricultural, Forest and Food Sciences HAFL School of Agricultural, Forest and Food Sciences HAFL > Agriculture |
Name: |
Valach, Alex Constantin 0000-0003-4782-5766; Kasak, Kuno; Hemes, Kyle S.; Szutu, Daphne; Verfaillie, Joe; Baldocchi, Dennis D.; Krauss, Ken W.; Zhu, Zhiliang and Stagg, Camille L. |
ISBN: |
9781119639282 |
Series: |
Geophysical Monograph Series |
Publisher: |
John Wiley & Sons |
Language: |
English |
Submitter: |
Alex Constantin Valach |
Date Deposited: |
31 Jan 2024 15:19 |
Last Modified: |
31 Jan 2024 15:19 |
Publisher DOI: |
10.1002/9781119639305.ch13 |
URI: |
https://arbor.bfh.ch/id/eprint/21046 |
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