第三章土壤生物soilorganisms,土壤生物活性(biologicalactivity)和肥力直接或间接地与土壤生物有关。土壤生物是土壤具有生命力的主要成分，在土壤形成(soilformation)和发育过程(developmentprocess)中起主导作用(theleadingeffects)。也是评价土壤质量(soilquality)和健康状况(healthlevel)的重要指标之一。,本章重点阐述土壤微生物的多样性及其功能。,Soilorganismsareresponsibleforthephysicalcombinationandbiochemicaldecomposition,andincorporationoforganicmatter.Theyexhibittremendousdiversityintermsoftheirnumbers,sizeandmorphology,andalsovarydramaticallyintheirfunction,modeofnutritionandenvironmentaltolerance.,Contents,3.1Soi
