Measurement and economic valuation of carbon sequestration in Nova Scotian wetlands

Gallant, Kirsten; Withey, Patrick; Risk, D. A.; Kooten, G. Cornelis van; Spafford, Lynsay

doi:10.1016/j.ecolecon.2020.106619

Cited by 25 publications

(7 citation statements)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Although the treed swamps of our study emit CO 2 and CH 4 to the atmosphere, the influx of litterfall is greater, representing 92.46 g C•m -2 sequestered during the growing season, representing 343 g C•m -2 •year -1 . Our C sequestration estimate is at the high end of C sequestration rates estimated by Gallant et al (2020) based on 2017 summer measurements in Nova Scotia of various wetland types, which ranged between 62 and 345 g C•m -2 •year -1 . Compared with estimates reported by , our C sequestration estimate is higher than those of temperate peatlands (10-46 g C•m -2 •year -1 ) and temperate coastal wetlands (140-270 g C•m -2 •year -1 ).…”

Section: Discussionmentioning

confidence: 91%

The role of temperate treed swamps as a carbon sink in southwestern Nova Scotia

et al. 2021

View full text Add to dashboard Cite

Forested wetlands may represent important ecosystems for mitigating climate change effects through carbon (C) sequestration because of their slow decomposition and C storage by trees. Despite this potential importance, few studies have acknowledged the role of temperate treed swamps in the C cycle. In southwest Nova Scotia, Canada, we examined the role of treed swamps in the soil C cycle by determining C inputs through litterfall, assessing decomposition rates and soil C pools, and quantifying C outputs through soil greenhouse gas (GHG) emissions. The treed swamps were found to represent large supplies of C inputs through litterfall to the forest floor. The swamp soils had substantially greater C stores than the swamp-upland edge or upland soils. We found growing season C inputs via litterfall to exceed C outputs via GHG emissions in the swamps by a factor of about 2.5. Our findings indicate that temperate treed swamps can remain a C sink even if soil GHG emissions were to double, supporting conservation efforts to preserve temperate treed swamps as a measure to mitigate climate change.

show abstract

Section: Discussionmentioning

confidence: 91%

The role of temperate treed swamps as a carbon sink in southwestern Nova Scotia

et al. 2021

View full text Add to dashboard Cite

show abstract

“…Wetlands, which are among the most productive terrestrial ecosystems, provide huge economic benefits through a variety of functions (Gallant et al, 2020). Among these, their hydrological (e.g., flood control), biogeochemical (e.g., nutrient retention) and ecological (e.g., nursery plants) functions deliver socio-economic benefits known as ecosystem services (Aziz & Van Cappellen, 2020).…”

Section: Introductionmentioning

confidence: 99%

Economic valuation of suspended sediment and phosphorus filtration services by four different wetland types: A preliminary assessment for southern Ontario, Canada

Aziz

Cappellen

2021

Hydrological Processes

View full text Add to dashboard Cite

Wetlands are known for their water filtration (or purification) function. Although different wetland types differ in their filtration capacity, they are usually aggregated together in economic valuation studies. Here, we explicitly separate the valuation of the suspended sediment and phosphorus (P) filtration services of the four major wetland types-bogs, fens, marshes and swamps-found in southern Ontario, Canada.The areal extents of the four wetland types are derived from the Canadian Wetland Inventory (CWI) progress map, while the sediment accretion rate is used as the key variable regulating the suspended sediment and P filtration functions. Based on available literature data, we assess the relationship of the sediment accretion rate to wetland size. Because only weak positive correlations are found, we assign a mean (average) sediment accretion rate to each wetland type. The sediment accretion rates are combined with mean soil P concentrations to estimate Pretention rates by the wetlands. The replacement cost method is then applied to valuate the sediment and P filtration services. The unit values for both sediment and P retention decrease in the order: marshes > bogs ≈ swamps > fens. The total value of sediment plus phosphorus removal by all wetlands in southern Ontario amounts to $4.2 ± 2.9 billion per year, of which about 80% is accounted for by swamps. We further assess the costs of different options to offset the additional P loading generated in a hypothetical scenario whereby all wetlands are converted to agriculture. The results demonstrate that replacing the P filtration function of existing wetlands with conventional land management and water treatment solutions is not cost-effective, hence reinforcing the importance of protecting existing wetlands.

show abstract

“…The report issued by the Intergovernmental Panel on Climate Change (IPCC) in 2006 stated that LUCC caused carbon to be released into the atmosphere at a rate of 1.5 Pg per year 4 , indicating that the role of LUCC in carbon sinks in terrestrial ecosystems has changed dramatically. Carbon sinks are long-term carbon reservoirs, including soil, plant and other forms; carbon sinks mitigate climate change and offset anthropogenic carbon emissions 5 . Carbon emissions are entities that emit carbon dioxide into the atmosphere, resulting in an increase in the concentration of carbon dioxide in the atmosphere 6 .…”

Section: Introductionmentioning

confidence: 99%

Carbon sinks and carbon emissions balance of land use transition in Xinjiang, China: differences and compensation

Luo

Wang

et al. 2022

Sci Rep

View full text Add to dashboard Cite

With the continuous enhancement of human activities, the contradiction between regional development and ecological protection is prominent in the ecologically fragile arid areas. It is of great significance for regional sustainable development to understand the ecological supply and demand problems caused by transformation of land using and formulate ecological compensation scheme scientifically. This study takes Xinjiang in China as the research area. It explores the land use transition characteristics and the changes in carbon supply and demand of Xinjiang using methods such as GIS spatial analysis and modified comparative ecological radiation forcing. Finally, the ecological compensation scheme is studied based on the theory of ecological radiation. The research shows that (I) in the study chronology, most of the areas produced only one change in land use. Land use is gradually developing towards the direction of ecological protection. After 2000, grassland recovered well, and 14,298 km2 of other ecological land was transformed into grassland. (II) The change in the carbon sink of the Xinjiang ecosystem first decreased and then increased, and the ecological deficit area started to appear after 2010. The growth of grassland and cropland areas is essential to enhance the carbon sink capacity of arid zones. (III) The amount of ecological compensation in Xinjiang is 31.47 * 108 yuan, and the proportion of the amount received by ecological compensation areas is related to the distance between the supply and demand areas, the amount of carbon sequestration, and the area of the region. This study provides a reference for achieving the healthy development of sustainable land use ecosystems in arid zones.

show abstract

Measurement and economic valuation of carbon sequestration in Nova Scotian wetlands

Cited by 25 publications

References 18 publications

The role of temperate treed swamps as a carbon sink in southwestern Nova Scotia

The role of temperate treed swamps as a carbon sink in southwestern Nova Scotia

Economic valuation of suspended sediment and phosphorus filtration services by four different wetland types: A preliminary assessment for southern Ontario, Canada

Carbon sinks and carbon emissions balance of land use transition in Xinjiang, China: differences and compensation

Contact Info

Product

Resources

About