Extreme fire events are related to previous-year surface moisture conditions in permafrost-underlain larch forests of Siberia
نویسندگان
چکیده
منابع مشابه
Larch Forests of Middle Siberia: Long-Term Trends in Fire Return Intervals.
Fire history within the northern larch forests of Central Siberia was studied (65+°N). Fires within this area are predominantly caused by lightning strikes rather than human activity. Mean fire return intervals (FRI) were found to be 112 ± 49 years (based on fire scars) and 106 ± 36 years (based on fire scars and tree natality dates). FRI were increased with latitude increase, and observed to b...
متن کاملLarch Forests of Middle Siberia : Long - Term Trends in Fire Return Intervals 1 2
Fire history within the northern larch forests of Central Siberia was studied (65+°N). Fires within 19 this area are predominantly caused by lightning strikes rather than human activity. Mean fire return intervals (FRI) 20 were found to be 112 ± 49 years (based on fire scars) and 106 ± 36 years (based on fire scars and tree natality dates). 21 FRI were increased with latitude increase, and obse...
متن کاملUnderstory vegetation mediates permafrost active layer dynamics and carbon dioxide fluxes in open-canopy larch forests of northeastern Siberia
Arctic ecosystems are characterized by a broad range of plant functional types that are highly heterogeneous at small (~1-2 m) spatial scales. Climatic changes can impact vegetation distribution directly, and also indirectly via impacts on disturbance regimes. Consequent changes in vegetation structure and function have implications for surface energy dynamics that may alter permafrost thermal ...
متن کاملCajander larch (Larix cajanderi) biomass distribution, fire regime and post-fire recovery in northeastern Siberia
Climate change and land-use activities are increasing fire activity across much of the Siberian boreal forest, yet the climate feedbacks from forest disturbances remain difficult to quantify due to limited information on forest biomass distribution, disturbance regimes and post-disturbance ecosystem recovery. Our primary objective here was to analyse post-fire accumulation of Cajander larch (La...
متن کاملZn isotope fractionation in a pristine larch forest on permafrost-dominated soils in Central Siberia
Stable Zn isotopes fractionation was studied in main biogeochemical compartments of a pristine larch forest of Central Siberia developed over continuous permafrost basalt rocks. Two north- and south-oriented watershed slopes having distinctly different vegetation biomass and active layer depth were used as natural proxy for predicting possible future climate changes occurring in this region. In...
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ژورنال
عنوان ژورنال: Environmental Research Letters
سال: 2012
ISSN: 1748-9326
DOI: 10.1088/1748-9326/7/4/044021