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Earthworm populations are stable in temperate agricultural soils receiving wood-based biochar

Pedosphere 2021年第3期31卷 398-404页

作者： Joann KWHALEN Hicham BENSLIM Abdirashid AELMI barry rhusk Department of Natural Resource Sciences Macdonald Campus of McGill UniversitySte-Anne-de-BellevueQuebec H9X 3V9Canada Department of Environmental Technology Management College of Life SciencesKuwait UniversityP.O.Box 5969Safat 13060Kuwait BlueLeaf Inc. DrummondvilleQuebec J2B 5E9Canada

The application of decomposable organic residues such as manure and crop litter is generally beneficial to *** is an emerging interest in applying biochar,a carbonaceous product of pyrolysis,to temperate agricultural *** slow decomposition rate of biochar,which also contains ash and combustion byproducts,could be detrimental to *** objective of this study was to describe the earthworm populations in biochar-amended soils on a dairy farm in the *** River watershed,Quebec,*** were collected from replicated field plots under cereal *** A received three wood-based biochar types at two application rates(5 and 10 t ha^(-1) biochar)plus an unamended control,while Site B received wood-based biochar(7.5 t ha^(-1) biochar),dairy cattle slurry(10 t ha^(-1) manure),or a combination of the biochar and manure rates plus an unamended *** were collected by hand sorting and formaldehyde expulsion from soil *** species,Aporrectodea turgida,Aporrectodea tuberculata,and Lumbricus rubellus,were found at the sites,and Aporrectodea was the dominant *** sources,rates,and application with dairy slurry did not affect the earthworm population,which had 52-218 individuals m^(-2) in 2010 and 4-96 individuals m^(-2) in *** seasonal variation in earthworm population may be due to flooding in the spring of 2011,which apparently interfered with earthworm *** similarity in earthworm abundance and biomass in plots with and without wood-based biochar leads to the conclusion that earthworm populations are stable in biochar-amended soils in this cold,humid temperate region.

关键词： biochar-amended soilcornendogeic earthwormflooded soilpyrolysiswoody feedstock

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