7 research outputs found

    Reading tea leaves worldwide: Decoupled drivers of initial litter decomposition mass‐loss rate and stabilization

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    The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large-scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass-loss rates and stabilization factors of plant-derived carbon, using the Tea Bag Index (TBI). The stabilization factor quantifies the degree to which easy-to-degrade components accumulate during early-stage decomposition (e.g. by environmental limitations). However, agriculture and an interaction between moisture and temperature led to a decoupling between initial mass-loss rates and stabilization, notably in colder locations. Using TBI improved mass-loss estimates of natural litter compared to models that ignored stabilization. Ignoring the transformation of dead plant material to more recalcitrant substances during early-stage decomposition, and the environmental control of this transformation, could overestimate carbon losses during early decomposition in carbon cycle models

    Reading tea leaves worldwide: decoupled drivers of initial litter decomposition mass‐loss rate and stabilization

    Get PDF
    The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large‐scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass‐loss rates and stabilization factors of plant‐derived carbon, using the Tea Bag Index (TBI). The stabilization factor quantifies the degree to which easy‐to‐degrade components accumulate during early‐stage decomposition (e.g. by environmental limitations). However, agriculture and an interaction between moisture and temperature led to a decoupling between initial mass‐loss rates and stabilization, notably in colder locations. Using TBI improved mass‐loss estimates of natural litter compared to models that ignored stabilization. Ignoring the transformation of dead plant material to more recalcitrant substances during early‐stage decomposition, and the environmental control of this transformation, could overestimate carbon losses during early decomposition in carbon cycle models

    Development of agrotechnologies classification in the system of adaptive-landscape farming

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    In the article an attempt to develop the classification of agricultural technologies by criterion of intensification level has been made. The model is described in the context of adaptive-landscape fanning system. Some technological modules were created within base technologies. Theoretical research was illustrated by the results of experiments, conducted in Verhnevolzhsky Federal Agrarian Research Center and by the experience of individual agricultural organizations. Development of the agricultural technologies classification in regional aspect allowed to formulate the directions for future research works in the field of technology management theory. The main ones are as follows. 1. The need to develop a system of flexible technology management, taking into account weather, environmental and economic risks. Within this direction it was necessary to work out a mechanism of technologies adaptation to a complex of “local” conditions on the basis of technology modules and adapters. 2. The need to verify the obtained experimental data in production conditions. This is due to the fact that during the economic evaluation of agricultural technologies within the experiment, conducted on the territory of the research field, it turned out that the payback on technological costs with higher level of intensification decreased sharply. This does not meet the requirements of scientific and technological progress as well as production and economic feasibility, so it should be checked in production conditions. 3. A program of gradual transition from extensive and normal to intensive technologies should be created for the Upper Volga region. 4. Based on the above we should create a system of agricultural technologies management at the regional level and at the level of the business entity. In addition, a business proposal was given in order to improve the efficiency of intensive technologies - the organization of their own grain processing by agricultural producers. For this purpose, a suitable organizational and legal form is «consumer cooperative», which meets the economic interests of agricultural producers themselves

    Reading tea leaves worldwide : decoupled drivers of initial litter decomposition mass-loss rate and stabilization

    No full text
    The breakdown of plant material fuels soil functioning and biodiversity. Currently, process understanding of global decomposition patterns and the drivers of such patterns are hampered by the lack of coherent large-scale datasets. We buried 36,000 individual litterbags (tea bags) worldwide and found an overall negative correlation between initial mass-loss rates and stabilization factors of plant-derived carbon, using the Tea Bag Index (TBI). The stabilization factor quantifies the degree to which easy-to-degrade components accumulate during early-stage decomposition (e.g. by environmental limitations). However, agriculture and an interaction between moisture and temperature led to a decoupling between initial mass-loss rates and stabilization, notably in colder locations. Using TBI improved mass-loss estimates of natural litter compared to models that ignored stabilization. Ignoring the transformation of dead plant material to more recalcitrant substances during early-stage decomposition, and the environmental control of this transformation, could overestimate carbon losses during early decomposition in carbon cycle models
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