Carbon stock and change from woody biomass on Canada’s cropland between 1990 and 2000

Huffman, Ted; Liu, Jiangui; McGovern, Mark E.; McConkey, B.G.; Martin, Timothy A.

doi:10.1016/j.agee.2014.10.009

Cited by 11 publications

(10 citation statements)

References 22 publications

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“…Wetlands in the Atlantic Maritime ecozone comprise a small percentage of the total wetland area of Canada's forested ecosystems, but this ecozone had the largest relative decline in wetland extent in the analyzed period, with a 1.3% decrease in area per year. The reason for this steep decline is unclear; the combined effects of drought and urban expansion might be contributing to the higher rates of decline in this ecozone than in others [49,65,66], but the ecozone may also be very sensitive to mapping errors given the relatively small extent of wetlands compared with the national wetland coverage. Wetlands in mountainous ecozones (Montane, Boreal, and Taiga Cordillera) also comprised a small portion of total wetland area, but exhibited increases in wetland extent that may be related to increased snowmelt [67,68].…”

Section: Discussionmentioning

confidence: 96%

A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data

Wulder

Campbell

et al. 2018

Remote Sensing

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Wetlands are important globally for supplying clean water and unique habitat, and for storing vast amounts of carbon and nutrients. The geographic extent and state of wetlands vary over time and represent a dynamic land condition rather than a permanent land cover state. Herein, we combined a time series of land cover maps derived from Landsat data at 30-m resolution to inform on spatial and temporal changes to non-treed and treed wetland extents over Canada’s forested ecosystems (>650 million ha) from 1984 to 2016. Overall, for the period, 1984 to 2016, we found the extent of wetlands (non-treed and treed combined) in Canada’s forested ecosystems to be stable, with some regional variability, often resulting from offsetting decreases and increases within a given ecozone. Notwithstanding difficulties in using optical satellite data for mapping a land condition, by accumulating wetland evidence via earth observations consistently through multiple decades, our results capture the trends in wetland cover over a previously unmapped, national extent at a level of spatial detail and temporal reach suitable for further focused interpretations of wetlands and drivers and projections of wetland dynamics.

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Section: Discussionmentioning

confidence: 96%

A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data

Wulder

Campbell

et al. 2018

Remote Sensing

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“…The results indicated that the amounts varied by ecozone, e.g. the Mixedwood Plains and Boreal Plains showed an increase of 84.8Gg/year and 16.8Gg/year respectively, while the Prairie Parkland and Niagara region ecozones respectively had a decrease of 54.8Gg/year and 5.3Gg/year of carbon (Huffman et al, 2015). These results demonstrate the impact of landcover type on the carbon stock.…”

Section: Introductionmentioning

confidence: 74%

“…These pools will be considered in this study. A large-scale study was performed to estimate the changes in woody carbon stock in the entire cropland of Canada over the period of a decade (Huffman et al, 2015). Having considered the landcover changes for the various land types, such as forest, shrub, wetland, cropland, and settlement during the decade, the differences in woody carbon stock were calculated.…”

Section: Introductionmentioning

confidence: 99%

Estimating Carbon and Greenhouse Gas Emissions in Remote Regions of Canada

Ituen

2021

Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci.

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Abstract. Longer growing seasons in Northern Ontario are predicted, as a result of climate change. There is the expectation that there will be increased land use conversion from natural forests in Northern Ontario to capitalise on the new economic opportunities resulting from longer growing seasons. This study examines the impacts the land conversion – from forest to agricultural environment – has on the greenhouse gas emissions and soil properties. We use remote sensing technologies for detecting these changes. This paper highlights an automatic method we developed for change detection. The method was applied to the satellite data over a predominantly vegetated area of Northern Ontario for the period 2001 to 2016. The study showed how the forest air and soil properties transform over time from various land disturbances, and how subsequent management schemes affect the environmental properties such as greenhouse gas emissions and the soil carbon stock.

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“…By contrast, long-term trends of biomass C stocks for all other land-use categories are here developed for the first time and therefore presented hereafter. For vineyards and orchards, we assumed constant C stocks density in total, i.e., above-and belowground, biomass of 23t C ha -1 and 29 tC ha -1 respectively, based on Huffman et al, (2015). Due to lack of information and the minor area extent of this land-use category, we thus assumed C stocks in biomass to be independent of space and time.…”

Section: Biomass Carbon Stockmentioning

confidence: 99%

Socio-ecological drivers of long-term ecosystem carbon stock trend: An assessment with the LUCCA model of the French case

et al. 2021

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28Land ecosystems can play a crucial role in climate-change mitigation by acting as sinks for carbon. 29Legacy effects of past land use, including land conversion and changes in land-use intensity, 30 influence the capacity for future ecosystem carbon sequestration. These effects are hard to quantify, 31 however, and the influence of changes in land-use intensity are still largely overlooked. This study 32 assessed the long term dynamics of the terrestrial carbon budget in France. We 33 developed a new dynamic model: LUCCA (Land Use Change & Conversion Accounting) that 34 robustly quantifies the dynamics of carbon stocks and fluxes. It allows disentanglement of land 35 conversion from land management effects following a socio-ecological perspective. Carbon stocks 36 in terrestrial ecosystems in France increased from 3.5 GtC in 1850 to 4.8 GtC in 2015 as a result of contrasting regional land-use trajectories. Based on five counterfactual scenarios, we unravel that changes in land-use intensity explained 46% of the observed carbon stock changes since 1850, while land conversion was responsible for 30%, and the rest can be attributed to changes in forest growth rates induced by both environmental and management changes. The effects of land 41 conversion and changes in land-use intensity on carbon stock accumulation, however, would have 42 been hardly possible in the absence of agricultural intensification and release of harvest pressure 43 following wood-fuel substitution by fossil fuel. In fact, carbon emissions induced by fossil fuel 44 consumption in France from 1850 to 2015 were 9 times the carbon sink in terrestrial ecosystems. 45These figures highlight the importance of considering long-term trajectories of ecosystem carbon fluxes and their relationship with emissions from other processes for climate action strategies.

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Carbon stock and change from woody biomass on Canada’s cropland between 1990 and 2000

Cited by 11 publications

References 22 publications

A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data

A National Assessment of Wetland Status and Trends for Canada’s Forested Ecosystems Using 33 Years of Earth Observation Satellite Data

Estimating Carbon and Greenhouse Gas Emissions in Remote Regions of Canada

Socio-ecological drivers of long-term ecosystem carbon stock trend: An assessment with the LUCCA model of the French case

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