Medición continúa de flujo de CO2 en suelo en una parcela de bosque tropical en Isla Barro Colorado, Canal de Panamá.

Abstract

Developing countries are aimed to protect and expand their forests as a mitigation action to Climate Change. Tropical soils contain a 32% of the total amount of carbon stored in soils. With the incrementation of anthropogenic CO2 in the atmosphere, there is a necessity to understand soil CO2 complex interaction with abiotic and biotic factors and their interplay with soil CO2 production and transport, so a clear comprehension, could lead researchers of this subject to forecast with precise models,CO2 flux in tropical forests soils for the next decades. This paper describes the field work that has been done for 21 months, and the preliminary results of continuously measurements of soil CO2 flux, soil temperature and soil humidity on a 1 ha plot in the artificial island of Barro Colorado; using a closed long term chamber method with an infrared gas analyzer. The mean for soil CO2 flux in the study period was 2.92 μmol/m²s. There is a positive correlation with soil humidity and soil temperature, soil CO2 flux can be explained in this particular plot by this abiotic factor.Finally, we conclude that our measurements need to be done continuously and for a long period of time in order to evaluate the spatial and seasonal variability of soil CO2 flux.

Understanding Soil Respiration Dynamics in Temperate Forests in Northwestern Mexico

“…Furthermore, Cantú-Silva et al [46] reported that soil CO 2 fluxes are directly influenced by T soil , where microorganisms responsible for the decomposition of soil organic matter are involved. Nevertheless, Sugasti et al [47] point out that, although there is a positive correlation between CO 2 efflux and T soil , variations in this variable are not the only factor driving soil CO 2 fluxes; therefore, each particular forest depends on a balance of conditions such as soil moisture content, belowground biomass and microorganisms, which play an important role in CO 2 production and transport to the soil surface.…”