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| soil ecology ： ウィキペディア英語版 |
soil ecology
Soil ecology is the study of the interactions among soil organisms, and between biotic and abiotic aspects of the soil environment.〔Access Science: (Soil Ecology ). Url last accessed 2006-04-06〕 It is particularly concerned with the cycling of nutrients, formation and stabilization of the pore structure, the spread and vitality of pathogens, and the biodiversity of this rich biological community.
== Overview ==
Soil is made up of a multitude of physical, chemical, and biological entities, with many interactions occurring among them. Soil is a variable mixture of broken and weathered minerals and decaying organic matter. Together with the proper amounts of air and water, it supplies, in part, sustenance for plants as well as mechanical support.
The diversity and abundance of soil life exceeds that of any other ecosystem. Plant establishment, competitiveness, and growth is governed largely by the ecology below-ground, so understanding this system is an essential component of plant sciences and terrestrial ecology.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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