Age of Soil Organic Matter and Soil Respiration: Radiocarbon Constraints on Belowground C Dynamics
نویسندگان
چکیده
منابع مشابه
Age of Soil Organic Matter and Soil Respiration: Radiocarbon Constraints on Belowground C Dynamics
Radiocarbon data from soil organic matter and soil respiration provide powerful constraints for determining carbon dynamics and thereby the magnitude and timing of soil carbon response to global change. In this paper, data from three sites representing well-drained soils in boreal, temperate, and tropical forests are used to illustrate the methods for using radiocarbon to determine the turnover...
متن کاملC fractionation in transformations at the interface between roots, microorganisms, soil organic matter and soil respiration
Introduction Natural variations of the C/C ratio have been frequently used over the last three decades to trace C sources and fluxes between plants, microorganisms, and soil. Most of these studies have used the natural C labelling approach, i.e. natural δC variation after C3 – C4 vegetation changes. In this mini-review, we focus on C fractionation in processes at the interface between roots, mi...
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Alteration in the amount of soil organic matter input can have profound effect on carbon dynamics in forest soils. The objective of our research was to determine the response in soil respiration to above- and belowground organic matter manipulation in a Chinese pine (Pinus tabulaeformis) plantation. Five organic matter treatments were applied during a 2-year experiment: both litter removal and ...
متن کاملEffects of experimental drought on soil respiration and radiocarbon efflux from a temperate forest soil
Soil moisture affects microbial decay of SOM and rhizosphere respiration (RR) in temperate forest soils, but isolating the response of soil respiration (SR) to summer drought and subsequent wetting is difficult because moisture changes are often confounded with temperature variation. We distinguished between temperature and moisture effects by simulation of prolonged soil droughts in a mixed de...
متن کاملComparing organic versus conventional soil management on soil respiration
Soil management has great potential to affect soil respiration. In this study, we investigated the effects of organic versus conventional soil management on soil respiration. We measured the main soil physical-chemical properties from conventional and organic managed soil in Ecuador. Soil respiration was determined using alkaline absorption according to Witkamp. Soil properties such as organi...
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ژورنال
عنوان ژورنال: Ecological Applications
سال: 2000
ISSN: 1051-0761
DOI: 10.2307/2641102