Seasonal and altitudinal variation in decomposition of soil organic matter inferred from radiocarbon measurements of soil CO2flux
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 کاملRegional variation in the temperature sensitivity of soil organic matter decomposition in China's forests and grasslands.
How to assess the temperature sensitivity (Q10 ) of soil organic matter (SOM) decomposition and its regional variation with high accuracy is one of the largest uncertainties in determining the intensity and direction of the global carbon (C) cycle in response to climate change. In this study, we collected a series of soils from 22 forest sites and 30 grassland sites across China to explore regi...
متن کاملTemperature sensitivity of soil organic matter decomposition and the influence of soil carbon pools and attributes
xii CHAPTER 1. GENERAL INTRODUCTION
متن کاملNOTE / NOTE Forest soil disturbance intervals inferred from soil charcoal radiocarbon dates
Forest soil disturbance intervals are usually too long to measure using plot-based studies, and thus they are poorly understood. The mean soil disturbance interval (MSDI) in an old-growth forest on the west coast of Vancouver Island was estimated from radiocarbon dates of charcoal from organic and mineral soil horizons. Two assumptions are required to estimate the MSDI: (1) charcoal from forest...
متن کاملEffect of Living Roots on Soil Organic Matter Decomposition
Published information is contradictory about the inhibitory or stimulatory effect of living roots on soil organic matter d~m~sition. In this study, i4C-labelled rye straw was exposed in fertilii or unfertilized soil with or without plants (winter rye, Se&e cereuIe) for 49 days under semi-controlled conditions. Our objective was to study the effect of roots on soil organic matter mineralization ...
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ژورنال
عنوان ژورنال: Global Biogeochemical Cycles
سال: 2000
ISSN: 0886-6236
DOI: 10.1029/1999gb900074