A review on wildfire studies in the context of global change

Chao, 岳超 Yue; Caifang, 罗彩访 Luo; Lifu, 舒立福 Shu; Zehao, 沈泽昊 Shen

doi:10.5846/stxb201812202762

Cited by 6 publications

(2 citation statements)

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“…Currently, numerous related studies have been conducted to determine the spatiotemporal patterns and driving factors behind wildfire occurrences. These studies employ mathematical statistics and spatial analysis methods using historical wildfire data, as well as remote sensing wildfire data [15][16][17]. They cover a wide range of time and spatial scales, from short-term to long-term and from local to national and global levels, focusing on various aspects, such as the total number of wildfires, total burned area, and average burned area [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Patterns and Risk Zoning of Wildfire Occurrences in Northeast China from 2001 to 2019

Wang,

Zhang,

Feng

et al. 2023

Forests

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Wildfires, a recurring and persistent natural disaster, present direct threats to both ecological balance and human safety. Despite the northeastern region of China boasting abundant forest resources, it grapples with a significant wildfire issue. This study, focused on China’s northeastern region, employs sophisticated methodologies, including the Mann–Kendall (MK) mutation test, sliding t-test, and geographical heat maps, to unveil the spatial distribution and temporal trends of wildfires. Furthermore, a random forest model is utilized to develop a wildfire susceptibility map, enabling an in-depth analysis of the relationships between various potential factors and wildfires, along with an assessment of the significance of these driving factors. The research findings indicate that wildfires in the northeastern region exhibit distinct seasonality, with the highest occurrences in the autumn and spring and fewer incidents in the summer and winter. Apart from the spring season, historical wildfires show a decreasing trend during other seasons. Geographically, wildfires tend to cluster, with over half of the high-risk areas concentrated at the junction of the Greater Khingan Mountains and Lesser Khingan Mountains in the northeastern region. The random forest model assumes a pivotal role in the analysis, accurately identifying both natural and human-induced factors, including topography, climate, vegetation, and anthropogenic elements. This research further discloses that climate factors predominantly influence wildfires in the northeastern region, with sunshine duration being the most influential factor. In summary, this study highlights the variation in various wildfire-driving factors, providing the basis for tailored management strategies and region-specific fire prevention. Through a comprehensive analysis of the spatiotemporal patterns of wildfires and associated risk factors, this research offers valuable insights for mitigating wildfire risks and preserving the region’s ecological integrity.

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Section: Introductionmentioning

confidence: 99%

Spatiotemporal Patterns and Risk Zoning of Wildfire Occurrences in Northeast China from 2001 to 2019

Wang,

Zhang,

Feng

et al. 2023

Forests

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“…Fire is one of the most important components of the Earth system (Bowman et al, 2009;Yue et al, 2020), and it also played a vital role in the evolution of hominids (Chazan, 2017;MacDonald et al, 2021) and it is important for the health and welfare of modern humans (Shen and Sun, 2016;Theys et al, 2020;Gatti et al, 2021). Ongoing global climatic warming and recent extensive fires are causing increasing concerns about the prospect of a 'planet on fire' (Liu et al, 2010;Pechony and Shindell, 2010;Abatzoglou and Williams, 2016;Nolan et al, 2020;Pang et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Anthropogenic origin of a change in the fire-climate relationship in northern China after ∼2000 yr BP: Evidence from a 15,500-year black carbon record from Dali Lake

et al. 2022

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There are debates regarding whether a wet and warm climate or a dry and cold climate dominated Holocene fire activity in northern China on the millennial timescale, and when human activities overtook climate change as the dominant control on fire occurrence in the region. Here we present a high-resolution fire history for the past ~15,500 years from a sediment core in Dali Lake, located in the foothills of the Greater Hinggan Mountains, one of the areas of highest fire risk in China. The results demonstrate that fire activity was rare during the last deglaciation (~15,500-11,700 yr BP), gradually increased at the beginning of the Holocene, and reached its highest level during ~9000-5000 yr BP, after which there was a decreasing trend. However, after ~2000 yr BP this decreasing trend ended, and the most prominent feature is a peak in fire activity during the Medieval Warm Period (MWP). Overall, fire activity corresponded well to changes in the East Asian summer monsoon (EASM) precipitation on the millennial timescale during ~15,500-2000 yr BP, but this relationship changed after ~2000 yr BP. We propose that fire activity in northern China on the millennial timescale during ~15,500-2000 yr BP was dominated by the biofuels reserve under the control of the EASM precipitation. In contrast, with the intensification of human activities after ~2000 yr BP, human activity caused a ~62%-73% increase in fire activity, which altered the fire-climate relationship that had previously prevailed in northern China. Our results indicate that a wet-warm climate (increased EASM intensity), rather than a dry-cold climate, was the

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Forest succession trajectories after fires in valleys and on slopes in the Greater Khingan Mountains, China

et al. 2023

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Accurate assessment of postfire vegetation recovery is important for forest management and the conservation of species diversity. Topography is an important factor affecting vegetation recovery but whether species composition varies with different recovery stages and between valleys and slopes is unclear. Using field data and a space-for-time substitution method, we quantified species richness and diversity to obtain the successional trajectories of valleys and slopes. We surveyed the species of 10 burned areas from 1986 to 2010 in the Greater Khingan Mountains in northeastern China, and found that with increasing postfire recovery time, species richness in both valleys and slopes gradually decreased. However, species richness in valleys was relatively higher. Shrubs recovered rapidly in the valleys, and species diversity maximized approximately 11 years after fire. However, it maximized 17–18 years after fire on the slopes. Numerous shade-tolerant species were present in the valleys 11 years after fire but not until after 18 years on slopes. Larch appeared earlier than 11 years after fire and its recovery was slow in the valleys but appeared quickly on slopes and established dominance early. Our study provides some new insights into vegetation succession after fire at local scales. After fire, the vegetation recovery processes differ with topography and it affects the initial rate of recovery and species composition at different successional stages.

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A review on wildfire studies in the context of global change

Cited by 6 publications

References 0 publications

Spatiotemporal Patterns and Risk Zoning of Wildfire Occurrences in Northeast China from 2001 to 2019

Spatiotemporal Patterns and Risk Zoning of Wildfire Occurrences in Northeast China from 2001 to 2019

Anthropogenic origin of a change in the fire-climate relationship in northern China after ∼2000 yr BP: Evidence from a 15,500-year black carbon record from Dali Lake

Forest succession trajectories after fires in valleys and on slopes in the Greater Khingan Mountains, China

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