Asymmetrical Lightning Fire Season Expansion in the Boreal Forest of Northeast China
| Autor: | Wenqian Wang, Guocan Wu, Liu Kezhen, Wang Mingyu, Xiaoxu Wu, Lifu Shu, Ran An, Cong Gao, Chunming Shi |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Julian day geography geography.geographical_feature_category fire season 010504 meteorology & atmospheric sciences lightning fire Taiga Forestry Snow Atmospheric sciences 010603 evolutionary biology 01 natural sciences Lightning Snowmelt Evapotranspiration Spring (hydrology) asymmetrical expansion Environmental science boreal forest QK900-989 China Plant ecology 0105 earth and related environmental sciences |
| Zdroj: | Forests, Vol 12, Iss 1023, p 1023 (2021) |
| ISSN: | 1999-4907 |
| Popis: | All-season warming is assumed to advance snowmelt and delay snow accumulation; additionally, coupled with warming-induced drought stress, all-season warming could extend both the beginning and the end of the fire season. Using fire data updated for 1968–2018, we found an asymmetrical expansion of the lightning fire season in the boreal forest of Northeast China. Lightning fires have not advanced into the early fire season (May–June) but have largely extended into the snowless late fire season (July–September) since the late 1990s (mean end Julian date delayed by 51.1 days for 1998–2018 compared with 1968–1997, p < 0.001). Despite significant warming, the Julian days of snowmelt have changed only slightly, which has prohibited the fire season from advancing into early spring. The expansion of lightning fires into July–September was associated with a warming-induced significant increase in evapotranspiration and a decrease in soil/fuel moisture. |
| Databáze: | OpenAIRE |
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