Interactive comment on “Soil respiration at mean annual temperature predicts annual total across vegetation types and biomes” by M. Bahn et al
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Ref #1: ‘With this work, the authors demonstrate that annual soil respiration can be estimated by measuring soil respiration at mean annual temperature at sites which are not water limited. At seasonally arid sites, a correction factor based on the ratio between precipitation and potential evapotranspiration needs to be used. This work is, thus, extremely useful in that it proposes a feasible method to obtain reliable global estimates of soil respiration, and their space and annual variability. The approach is sound and the work well performed. Conclusions are well supported by the data.’
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Interactive comment on “Soil respiration at mean annual temperature predicts annual total across vegetation types and biomes” by M. Bahn et al
Ref #2: ‘The analysis done in the current manuscript (regression across sites) is incorrect for the question asked. A cross-site regression assesses if a relationship holds between the two variables across sites, not how good the relationship is at any individual site. Lots of cross site predictions work across sites, but not for an individual site (for example, Gower et al., 1996; Litton et al...
متن کاملInteractive comment on “Soil respiration at mean annual temperature predicts annual total across vegetation types and biomes” by M. Bahn et al
Ref #2: ‘The analysis done in the current manuscript (regression across sites) is incorrect for the question asked. A cross-site regression assesses if a relationship holds between the two variables across sites, not how good the relationship is at any individual site. Lots of cross site predictions work across sites, but not for an individual site (for example, Gower et al., 1996; Litton et al...
متن کاملSoil respiration at mean annual temperature predicts annual total across vegetation types and biomes.
Soil respiration (SR) constitutes the largest flux of CO(2) from terrestrial ecosystems to the atmosphere. However, there still exist considerable uncertainties as to its actual magnitude, as well as its spatial and interannual variability. Based on a reanalysis and synthesis of 80 site-years for 57 forests, plantations, savannas, shrublands and grasslands from boreal to tropical climates we pr...
متن کاملMaximum temperature accounts for annual soil CO2 efflux in temperate forests of Northern China
It will help understand the representation legality of soil temperature to explore the correlations of soil respiration with variant properties of soil temperature. Soil temperature at 10 cm depth was hourly logged through twelve months. Basing on the measured soil temperature, soil respiration at different temporal scales were calculated using empirical functions for temperate forests. On mont...
متن کاملThe sensitivity of soil respiration to soil temperature, moisture, and carbon supply at the global scale.
Soil respiration (Rs) is a major pathway by which fixed carbon in the biosphere is returned to the atmosphere, yet there are limits to our ability to predict respiration rates using environmental drivers at the global scale. While temperature, moisture, carbon supply, and other site characteristics are known to regulate soil respiration rates at plot scales within certain biomes, quantitative f...
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