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Mangrove blue carbon stocks and dynamics are controlled by hydrogeomorphic settings and land-use change
- Source :
- Sasmito, S D, Sillanpää, M, Hayes, M A, Bachri, S, Saragi-sasmito, M F, Sidik, F, Hanggara, B, Mofu, W Y, Rumbiak, V I, Hendri, Taberima, S, Suhaemi, Nugroho, J D, Pattiasina, T F, Widagti, N, Barakalla, Rahajoe, J S, Hartantri, H, Nikijuluw, V, Jowey, R N, Heatubun, C, Zu Ermgassen, P, Worthington, T A, Howard, J, Lovelock, C E, Friess, D A, Hutley, L B & Murdiyarso, D 2020, ' Mangrove blue carbon stocks and dynamics are controlled by hydrogeomorphic settings and land-use change ', Global Change Biology . https://doi.org/10.1111/gcb.15056, Global Change Biology
- Publication Year :
- 2020
- Publisher :
- Wiley, 2020.
-
Abstract
- Globally, carbon‐rich mangrove forests are deforested and degraded due to land‐use and land‐cover change (LULCC). The impact of mangrove deforestation on carbon emissions has been reported on a global scale; however, uncertainty remains at subnational scales due to geographical variability and field data limitations. We present an assessment of blue carbon storage at five mangrove sites across West Papua Province, Indonesia, a region that supports 10% of the world's mangrove area. The sites are representative of contrasting hydrogeomorphic settings and also capture change over a 25‐years LULCC chronosequence. Field‐based assessments were conducted across 255 plots covering undisturbed and LULCC‐affected mangroves (0‐, 5‐, 10‐, 15‐ and 25‐year‐old post‐harvest or regenerating forests as well as 15‐year‐old aquaculture ponds). Undisturbed mangroves stored total ecosystem carbon stocks of 182–2,730 (mean ± SD: 1,087 ± 584) Mg C/ha, with the large variation driven by hydrogeomorphic settings. The highest carbon stocks were found in estuarine interior (EI) mangroves, followed by open coast interior, open coast fringe and EI forests. Forest harvesting did not significantly affect soil carbon stocks, despite an elevated dead wood density relative to undisturbed forests, but it did remove nearly all live biomass. Aquaculture conversion removed 60% of soil carbon stock and 85% of live biomass carbon stock, relative to reference sites. By contrast, mangroves left to regenerate for more than 25 years reached the same level of biomass carbon compared to undisturbed forests, with annual biomass accumulation rates of 3.6 ± 1.1 Mg C ha−1 year−1. This study shows that hydrogeomorphic setting controls natural dynamics of mangrove blue carbon stocks, while long‐term land‐use changes affect carbon loss and gain to a substantial degree. Therefore, current land‐based climate policies must incorporate landscape and land‐use characteristics, and their related carbon management consequences, for more effective emissions reduction targets and restoration outcomes.<br />We present blue carbon (C) assessment from 255 plots covering undisturbed and land‐use change‐affected mangroves (0‐, 5‐, 10‐, 15‐ and 25‐year‐old post‐harvest as well as 15‐year‐old aquaculture ponds) across West Papua Province, Indonesia. Undisturbed mangroves stored total ecosystem C‐stocks of 182–2,730 (1,087 ± 584) Mg C/ha, with variation driven by hydrogeomorphic settings. Forest harvesting did not significantly affect soil C‐stocks, despite increased dead wood density, but it removed nearly all live biomass. Aquaculture conversion removed 60% of soil and 85% of live biomass C‐stocks. Mangroves left to regenerate for 25 years reached the same level of biomass carbon compared to undisturbed forests.
- Subjects :
- 0106 biological sciences
coastal wetlands
Conservation of Natural Resources
restoration
010504 meteorology & atmospheric sciences
Chronosequence
Wetland
Paris Agreement
Forests
010603 evolutionary biology
01 natural sciences
climate change mitigation
Blue carbon
Environmental Chemistry
Primary Research Article
Ecosystem
Land use, land-use change and forestry
Biomass
LULCC
0105 earth and related environmental sciences
General Environmental Science
Global and Planetary Change
geography
geography.geographical_feature_category
Ecology
Forestry
Soil carbon
Primary Research Articles
Carbon
Indonesia
Greenhouse gas
Wetlands
Environmental science
Mangrove
Subjects
Details
- Database :
- OpenAIRE
- Journal :
- Sasmito, S D, Sillanpää, M, Hayes, M A, Bachri, S, Saragi-sasmito, M F, Sidik, F, Hanggara, B, Mofu, W Y, Rumbiak, V I, Hendri, Taberima, S, Suhaemi, Nugroho, J D, Pattiasina, T F, Widagti, N, Barakalla, Rahajoe, J S, Hartantri, H, Nikijuluw, V, Jowey, R N, Heatubun, C, Zu Ermgassen, P, Worthington, T A, Howard, J, Lovelock, C E, Friess, D A, Hutley, L B & Murdiyarso, D 2020, ' Mangrove blue carbon stocks and dynamics are controlled by hydrogeomorphic settings and land-use change ', Global Change Biology . https://doi.org/10.1111/gcb.15056, Global Change Biology
- Accession number :
- edsair.doi.dedup.....ebd30950940c3ce711032820baa17db4
- Full Text :
- https://doi.org/10.17863/cam.50877