上游充通大学 SHANGHAI JIAO TONG UNIVERSITY 土壤的形成 是一个物理、化学与生物的综合过程。Soil formation is a result of combined physical,chemical,and biological processes. 1.藻类、地衣、苔藓产生有机物，支持了化能有机营养细菌和 真菌生长。Algae,lichens or mosses-.phototrophic,produce organic matter,which supports the growth of chemoorganotrophic bacteria and fungi. 2.化能有机异养的细菌与真菌产生碳酸和有机酸，加速了岩石 的崩解。 Chemoorganotrophic bacteria and fungi-produce carbonic and organic acids,which promote the dissolution of rock into smaller particles 3.早期植物的生长促进了根际微生物区系的发展。 Pioneering higher plants:promote the development of a rhizosphere microflora 11 上海交通大学通识教育核心课程 《微生物的世界》11 上海交通大学通识教育核心课程《微生物的世界》 土壤的形成 是一个物理、化学与生物的综合过程。Soil formation is a result of combined physical, chemical, and biological processes. 1. 藻类、地衣、苔藓产生有机物，支持了化能有机营养细菌和 真菌生长。Algae, lichens or mosses-phototrophic, produce organic matter, which supports the growth of chemoorganotrophic bacteria and fungi. 2. 化能有机异养的细菌与真菌产生碳酸和有机酸，加速了岩石 的崩解。Chemoorganotrophic bacteria and fungi-produce carbonic and organic acids, which promote the dissolution of rock into smaller particles 3. 早期植物的生长促进了根际微生物区系的发展。Pioneering higher plants: promote the development of a rhizosphere microflora