Influence of microclimatological conditions on the soil respiration on the windfall hurnt area in the Tatra National Park, Slovakia | Vplyv mikroklimatických podmienok na pôdnu respiráciu na kalamitnej ploche požiariska v Tatranskom národnom parku
2011
Mezeiová, N., Technical University in Zvolen (Slovak Republic). Faculty of Forestry | Škvarenina, J.
Terestrial ecosystems play an important role in the global carbon cycle. Soil respiration is the primary path by witch CO2 fixed by land plants retums to the atmosphere. After photosynthesis, soil respiration is the second largest flux of carbon in most ecosystems. Soil carbon dioxide (C02) efflux derives from respiration of decomposers of soil organic mater (heterotrophic respiration) and respiration of plant rhizosphere (autotrophic respiration). Windthrow disaster of the 19th november 2004 and subsequent fire on July 30th 2005 that engulfed Tatras National Park caused changes in many fields, e.g. in soils, hydrology, atmosphere, fauna, vegetation, landscape, etc. Soil respiration was measured using a portable closed dynamic system with Vaisala CARBOCAP hand - heldcarbon dioxide meter GM70. The soil chamber was placed on fixed collars (each covering 0,071 m2) with 5-10 cm inserted into the soil. Soil respiration values were directly corrected by temperature and atmospheric pressure. On the burnt plot we recorded considerable diferences in soil respiration rate between measure points, which were located in different microclimatic conditions. Microclima created by the vegetation is one of many factors influencing the soil respiration rate.
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