Soil Vulnerability Indicators to Degradation by Wildfires in Torres del Paine National Park (Patagonia, Chile)
نویسندگان
چکیده
Wildfires are a common phenomenon globally, nonetheless some ecosystems more adapted than others. In this work, we show results of study conducted in Torres del Paine National Park (Chile) that suffered big forest fire 2011, affecting 17,666 ha. The is located the transitional forest-steppe zone whose annual rainfall varies between 300 and 1,500 mm. Plant communities goes from Patagonian steppe, pre-Andean scrub to Magellanic forest. Based on vegetation community trying cover all representative sectors affected by fire, 5 areas park were sampled 2019 following transects where recovery has been monitored since occurred. Soil parameters used evaluate were: texture, soil water repellency (WR), organic matter (OM), aggregation, including total content macroaggregates (TCA) their stability (AS). showed high values OM, however three statistically lower OM burned samples. WR was present (from slight severe) 75% samples, without differences unburned. correlations analyses indicated related with type quantity, better obtained when only samples same area included analyses. aggregation soils have poor structural development. TCA 16 50%, AS not very (average 66%), being highest lowest erosion processes. This suggests higher consequence destruction loss less resistant fraction after fire. combination sand (low specific surface area) make them susceptible develop WR. Since these scarce development structure, structure vulnerable processes Measures protect or accelerate recommended new human caused wildfires could occur.
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ژورنال
عنوان ژورنال: Spanish Journal of Soil Science
سال: 2021
ISSN: ['2253-6574']
DOI: https://doi.org/10.3389/sjss.2021.10008