Human-induced and natural carbon storage in floodplains of the Central Valley of California

Steger, Kristin; Fiener, Peter; Marvin-DiPasquale, Mark C.; Viers, Joshua H.

doi:10.1016/j.scitotenv.2018.09.205

Cited by 24 publications

(10 citation statements)

References 41 publications

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“…Floodplain deposition, however, can be particularly effective at burying organic‐rich soil horizons and reducing microbial activity in these horizons, resulting in large soil OC stocks (Gurwick et al, ; Blazejewski et al, ; Chaopricha and Marin‐Spiotta, ; Marin‐Spiotta et al, ; Ricker and Lockaby, ; D'Elia et al, ). Floodplains aggrading as a result of changes in land cover can have particularly high rates of SOC sequestration and buried OC‐rich horizons (Walter and Merritts, ; Ricker et al, , ; Steger et al, ). Primary productivity and burial of OC via sediment deposition in floodplain lakes and wetlands can also be a significant source of carbon sequestration (e.g.…”

Section: Floodplain Organic Carbon Storagementioning

confidence: 99%

How geomorphic context governs the influence of wildfire on floodplain organic carbon in fire‐prone environments of the western United States

Wohl

Lininger

Rathburn

et al. 2019

Earth Surf Processes Landf

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We draw on published studies of floodplain organic carbon storage, wildfire-related effects on floodplains in temperate and high latitudes, and case studies to propose a conceptual model of the effects of wildfire on floodplain organic carbon storage in relation to climate and valley geometry. Soil organic carbon typically constitutes the largest carbon stock in floodplains in fireprone regions, although downed wood can contain significant organic carbon. We focus on the influence of wildfire on soil organic carbon and downed wood as opposed to standing vegetation to emphasize the geomorphic influences resulting from wildfire on floodplain organic carbon stocks. The net effect of wildfire varies depending on site-specific characteristics including climate and valley geometry. Wildfire is likely to reduce carbon stock in steep, confined valley segments because increased water and sediment yields following fire create net floodplain erosion. The net effect of fire in partly confined valleys depends on site-specific interactions among floodplain aggradation and erosion, and, in high-latitude regions, permafrost degradation. In unconfined valleys in temperate latitudes, wildfire is likely to slightly increase floodplain organic carbon stock as a result of floodplain aggradation and wood deposition. In unconfined valleys in high latitudes underlain by permafrost, wildfire is likely in the short-term to significantly decrease floodplain organic carbon via permafrost degradation and reduce organic-layer thickness. Permafrost degradation reduces floodplain erosional resistance, leading to enhanced stream bank erosion and greater carbon fluxes into channels. The implications of warming climate and increased wildfires for floodplain organic carbon stock thus vary. Increasing wildfire extent, frequency, and severity may result in significant redistribution of organic carbon from floodplains to the atmosphere via combustion in all environments examined here, as well as redistribution from upper to lower portions of watersheds in the temperate zone and from floodplains to the oceans via riverine transport in the high-latitudes.

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Section: Floodplain Organic Carbon Storagementioning

confidence: 99%

How geomorphic context governs the influence of wildfire on floodplain organic carbon in fire‐prone environments of the western United States

Wohl

Lininger

Rathburn

et al. 2019

Earth Surf Processes Landf

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“…This may contribute to landform and soil parent material in this region. Buried soil layers in the alluvial plain of a river can increase the organic carbon storage of the deep soil layer [68,69]. Our study area is located in the lower reaches of the Pearl River Delta and near the South China Sea.…”

Section: Comparison Analysis Of Soc Density For Pervious Surfacesmentioning

confidence: 99%

The Impact of Impervious Surface Expansion on Soil Organic Carbon: A Case Study of 0–300 cm Soil Layer in Guangzhou City

Yan

2021

Sustainability

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Empirical evidence shows that the expansion of impervious surface threatens soil organic carbon (SOC) sequestration in urbanized areas. However, the understanding of deep soil excavation due to the vertical expansion of impervious surface remains limited. According to the average soil excavation depth, we divided impervious surface into pavement (IS20), low-rise building (IS100) and high-rise building (IS300). Based on remote-sensing images and published SOC density data, we estimated the SOC storage and its response to the impervious surface expansion in the 0–300 cm soil depth in Guangzhou city, China. The results showed that the total SOC storage of the study area was 8.31 Tg, of which the top 100 cm layer contributed 44%. The impervious surface expansion to date (539.87 km2) resulted in 4.16 Tg SOC loss, of which the IS20, IS100 and IS300 contributed 26%, 58% and 16%, respectively. The excavation-induced SOC loss (kg/m2) of IS300 was 1.8 times that of IS100. However, at the residential scale, renovating an IS100 plot into an IS300 plot can substantially reduce SOC loss compared with farmland urbanization. The gains of organic carbon accumulation in more greenspace coverage may be offset by the loss in deep soil excavation for the construction of underground parking lots, suggesting a need to control the exploitation intensity of underground space and promote residential greening.

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“…Model-based methods are becoming more important because of their ability to spatially assess carbon reserves at various scales: global [13], national [14,15], regional [16], and city and county [12,17]. For example, one study [18] shows that the impact of land-use change on carbon storage is related to the natural process of soil carbon storage evolution in the floodplains of the Cosmons and California Rivers. A process-based dynamic land ecosystem model is used to simulate vegetation and soil carbon storage in the southern United States, and to assess the carbon dynamics of urbanized land over 1945-2007 [19].…”

Section: Introductionmentioning

confidence: 99%

Carbon Dynamics in the Northeastern Qinghai–Tibetan Plateau from 1990 to 2030 Using Landsat Land Use/Cover Change Data

Gong

Guldmann

et al. 2020

Remote Sensing

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Land use/cover change (LUCC) has an important impact on the terrestrial carbon cycle. The spatial distribution of regional carbon reserves can provide the scientific basis for the management of ecosystem carbon storage and the formulation of ecological and environmental policies. This paper proposes a method combining the CA-based FLUS model and the Integrated Valuation of Ecosystem Services and Trade-offs (InVEST) model to assess the temporal and spatial changes in ecosystem carbon storage due to land-use changes over 1990–2015 in the Qinghai Lake Basin (QLB). Furthermore, future ecosystem carbon storage is simulated and evaluated over 2020–2030 under three scenarios of natural growth (NG), cropland protection (CP), and ecological protection (EP). The long-term spatial variations in carbon storage in the QLB are discussed. The results show that: (1) Carbon storage in the QLB decreased at first (1990–2000) and increased later (2000–2010), with total carbon storage increasing by 1.60 Tg C (Teragram: a unit of mass equal to 1012 g). From 2010 to 2015, carbon storage displayed a downward trend, with a sharp decrease in wetlands and croplands as the main cause; (2) Under the NG scenario, carbon reserves decrease by 0.69 Tg C over 2020–2030. These reserves increase significantly by 6.77 Tg C and 7.54 Tg C under the CP and EP scenarios, respectively, thus promoting the benign development of the regional ecological environment. This study improves our understanding on the impact of land-use change on carbon storage for the QLB in the northeastern Qinghai–Tibetan Plateau (QTP).

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Human-induced and natural carbon storage in floodplains of the Central Valley of California

Cited by 24 publications

References 41 publications

How geomorphic context governs the influence of wildfire on floodplain organic carbon in fire‐prone environments of the western United States

How geomorphic context governs the influence of wildfire on floodplain organic carbon in fire‐prone environments of the western United States

The Impact of Impervious Surface Expansion on Soil Organic Carbon: A Case Study of 0–300 cm Soil Layer in Guangzhou City

Carbon Dynamics in the Northeastern Qinghai–Tibetan Plateau from 1990 to 2030 Using Landsat Land Use/Cover Change Data

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