Odem forest, Israel, Soil and tree stems experiment, February 2017 to January 2019.

These are data of soil gas, and incubations of soil, roots, and tree stem cores measured at Odem forest, northern Israel. The forest located 950 m a.s.l, 33o 13’ N, 35o 45’ E. The climate is Mesic Mediterranean with a mean annual precipitation of 950 mm and summer and winter mean temperature of 21.3º C and 7.3ºC, respectively. The dominant tree species are the evergreen Quercus calliprinos Webb (about 75% of the woody cover area) and the winter-deciduous Quercus boissieri Reut. (15%). The soil was formed on basaltic bedrock and is classified as Eutric Lithosol in the FAO classification system and as Lithic Xerorthent in the USDA classification system. The soil pH is 6.6 and the organic C content is 12%. These data include CO2 and O2 concentrations, and the apparent respiratory quotient (ARQ), soil temperature, gravimetric soil moisture, and Fe2+ concentrations. The data are the results of seasonal measurements of soil gas, bulk soil, tree stem cores, and roots incubations, and additional experiments testing the links between Fe2+ oxidation, temperature, and soil moisture with ARQ.