Carbon Cycle Responses to Experimental Drought and Warming in a Welsh Ombrotrophic Peatland in the Context of Late Holocene Carbon Accumulation

Andrews, Luke. O.; Rowson, James; Caporn, S. J. M.; Dise, Nancy B.; Beckwith, Michael; Blake, William; Garrett, Ed; Gehrels, W. Roland; Gehrels, Maria J.; Payne, Richard J.

doi:10.2139/ssrn.4017537

Cited by 1 publication

(3 citation statements)

References 95 publications

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“…Thus, based on the current available data for Zoige peatlands (Table 4), which is supported by that from other observational studies around the world (Andrews et al, 2022;Oestmann et al, 2022), future warming may decrease net C sequestration. In the context of a further 2 C increase (in relation to current temperatures), the Zoige peatland C stock may begin to lose C. However, these estimates are based on limited available data, which does not include the effect of warming on degraded peatlands.…”

Section: Potential Impacts On the Total Zoige Peatland Carbon Stocksupporting

confidence: 78%

“…In addition, previous studies have only reported effects of climate warming from intact Zoige peatlands; the effects of climate warming on drained or degraded Zoige peatland on NECB are unknown. Evidence from other studies suggests that the effects of warming may be greater in drier degraded peatlands (Andrews et al, 2022; Laine et al, 2019), suggesting an urgency to address this knowledge gap for future assessment of Zoige peatland resilience. Nevertheless, current results suggest that climate change may result in a reduced C uptake by Zoige peatlands through a substantial increase in CO 2 release to the atmosphere and a small increase in DOC export to aquatic systems, for example, tributaries of the Yellow River headwaters, to which the Zoige Plateau contributes around 30% of its flow (Wang et al, 2006; Zhou et al, 2021).…”

Section: Climate Change Effects On Zoige Peatlandsmentioning

confidence: 99%

“…Since Zoige peatland initiation, variation in C accumulation rates has been mostly caused by climatic changes, including relative changes in temperature linked to solar insolation, and precipitation, associated with monsoon activity (Zhao et al, 2011; Zhao et al, 2014). For example, warmer and wetter conditions in the mid‐Holocene (6.5–4.7 ka BP) were viewed as optimal peat forming conditions (Zhao et al, 2011) and over long timescales, low frequency climate changes and associated changes in vegetation are considered strong drivers of peatland C accumulation rates (Andrews et al, 2022; Ratcliffe et al, 2018).…”

Section: Effects Of Land Management and Climate Change On Zoige Peatl...mentioning

confidence: 99%

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The impacts of land‐use and climate change on the Zoige peatland carbon cycle: A review

Gaffney,

Tang,

et al. 2023

WIREs Climate Change

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The Zoige peatlands are the largest peatland area in China, and the largest high‐altitude peatland in the world. As with many peatlands worldwide, degradation from land management and climate change mean that the intact Zoige peatland area has decreased, potentially reducing the carbon (C) sink function and ecosystem services. This review summarizes current knowledge of the impacts of land‐use and climate change on the Zoige peatland C cycle in a global perspective and identifies future research and management directions. The existing literature suggests that artificial drainage carried out to lower water tables and improve grazing has a significant impact on the peatland C cycle. Drained and degraded areas may act as a net C source, through increased CO2 emissions, although the overall C balance of the Zoige peatlands is likely still a net C sink. Future climate change may also impact upon the peatland C cycle. Warming of 2°C may significantly reduce the strength of the C sink of intact peatland areas, which may shift the overall Zoige peatland C cycle balance to a net C source. The effect of warming on degraded Zoige peatlands is a major uncertainty, although the global literature suggests warming effects may be greater in degraded peatlands. Restoration of degraded peatlands (by blocking drains) may help reverse some of the impacts of degradation and gradually recover C sink function. However, there are fewer studies in Zoige peatlands than elsewhere. We conclude with several specific suggestions for future research on the peatland C cycle.This article is categorized under: Paleoclimates and Current Trends > Modern Climate Change Assessing Impacts of Climate Change > Observed Impacts of Climate Change Climate, Ecology, and Conservation > Observed Ecological Changes

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Section: Potential Impacts On the Total Zoige Peatland Carbon Stocksupporting

confidence: 78%

Section: Climate Change Effects On Zoige Peatlandsmentioning

confidence: 99%

Section: Effects Of Land Management and Climate Change On Zoige Peatl...mentioning

confidence: 99%

See 1 more Smart Citation

The impacts of land‐use and climate change on the Zoige peatland carbon cycle: A review

Gaffney,

Tang,

et al. 2023

WIREs Climate Change

View full text Add to dashboard Cite

show abstract

Carbon Cycle Responses to Experimental Drought and Warming in a Welsh Ombrotrophic Peatland in the Context of Late Holocene Carbon Accumulation

Cited by 1 publication

References 95 publications

The impacts of land‐use and climate change on the Zoige peatland carbon cycle: A review

The impacts of land‐use and climate change on the Zoige peatland carbon cycle: A review

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