Historical pyrogenic sources of black carbon during the last 150 years in the Great Hinggan Mountains, Northeast China

He, Jianxin; Gao, Chuanyu; Cong, Jinxin; Zhong, Jingjing; Han, Dongxue; Wang, Guoping

doi:10.1007/s11368-017-1825-y

Cited by 9 publications

(12 citation statements)

References 41 publications

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“…A recent study from the GHM Motianling Peatland (MP2) identified local and regional fire events for the past 150 years using black carbon (BC), microscopic and macroscopic charcoal (He et al, 2017). BC is produced from both fossil fuel combustion and wildfires (Gao et al, 2014), with local fire events contributing the majority of BC to MP2 prior to the 1930s, and BC from fossil fuel combustion increasing and obscuring records of local fire after the 1930s (He et al, 2017). However, the peatland also transitioned from a minerotrophic to an ombrotrophic peatland in approximately 1925 CE (He et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

“…BC is produced from both fossil fuel combustion and wildfires (Gao et al, 2014), with local fire events contributing the majority of BC to MP2 prior to the 1930s, and BC from fossil fuel combustion increasing and obscuring records of local fire after the 1930s (He et al, 2017). However, the peatland also transitioned from a minerotrophic to an ombrotrophic peatland in approximately 1925 CE (He et al, 2017). We suggest the decline in macro‐ and microscopic charcoal particles after 1930 CE reflects peatland development and expansion rather than changing fire regimes.…”

Section: Discussionmentioning

confidence: 99%

“…We suggest the decline in macro‐ and microscopic charcoal particles after 1930 CE reflects peatland development and expansion rather than changing fire regimes. In 1981 a fire burnt a large area of the southern GHM (Zhao, 2007) however, this is not recorded in the Motianling Peatland record (He et al, 2017). Other local fires in 1995 (Zhao, 2007), and a large fire in 1988 which burnt the Motianling Peatland (Wang et al, 2015), are recorded as minor peaks in the micro‐ and macroscopic charcoal records (He et al, 2017), suggesting the site may not reflect the true scale of local and regional fire activity.…”

Section: Discussionmentioning

confidence: 99%

“…Panel b. shows the location of JNTC, GAL and XJL and other paleoenvironmental sites discussed in the text including 1. Motianling Peatland (Bao, Shen, Wang, & Le Roux, 2015; He et al, 2017) and 2. Lake Moon (Wu & Liu, 2012; Wu et al, 2016) [Colour figure can be viewed at wileyonlinelibrary.com]…”

Section: Methodsmentioning

confidence: 99%

“…Fires occur frequently in the GHM, with 1,059 forest fires between 1987 and 2006 burning a total area of 2,806,969 ha, with lightning igniting 57% of the fires (Tian et al, 2011). Understanding past fire regimes in the GHM is essential to identifying long-term changes in fire activity, particularly as increasing temperatures over the next 100 years in northern China (Yan, Fu, & Shugart, 2000) A recent study from the GHM Motianling Peatland (MP2) identified local and regional fire events for the past 150 years using black carbon (BC), microscopic and macroscopic charcoal (He et al, 2017).…”

Section: F I G U R Ementioning

confidence: 99%

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Environmental change and human land‐use over the past 200 years in the Great Hinggan Mountains, Northeastern China

et al. 2020

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Mountain ecosystems are sensitive to environmental changes and are affected by direct and indirect anthropogenic activities. This study sought to understand the impacts of human occupation, environmental and climate change on the Great Hinggan Mountains (GHM) in Northeastern China. The last 200 years of environmental changes are reconstructed by analyzing sediment cores from five small mountain lakes. Cores were dated using 210Pb and 137Cs radioisotopes, microscopic charcoal identified regional fire activity and fossil pollen analysis reconstructed temporal and spatial changes in vegetation. Peaks in 137Cs, 226Ra and microscopic charcoal flux were found to follow similar trends between sites. The radioisotope records reflect redistribution processes, such as erosion and fire events, which overwhelm the atmospheric fallout signal in the GHM. Microscopic charcoal increased from 1950 CE and peaked at all sites after 2000 CE suggesting that current fire management, coupled with a warmer climate due to global warming, may be leading to more wildfire events in the region. Pinus, Quercus and Betula declined at all sites as human occupation occurred in the early 1900s. Initially, open forest and grassland expanded in response to overexploitation of forests, followed by arboreal pollen reaching maximum values after 2000 CE. This study concludes that the present‐day mixed coniferous broad‐leaved forest dominating the southern region of the GHM is a product of changing fire activity, excessive logging and, more recently, forestry management and vegetation regeneration. Results suggest further management strategies are needed to address land degradation and wildfire events in mountain regions of Northeastern China.

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