Rangeland soil quality
2001
A physical crust is a thin layer with reduced porosity and increased density at the surface of the soil. A biological crust is a living community of lichen, cyanobacteria, algae, and moss growing on the soil surface and binding it together. A chemical crust or precipitate is white or pale colored and forms in soils with a high content of salts. Both chemical and biological crusts can form on and extend into a physical crust. This information sheet deals only with physical and biological crusts.
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书目信息
出版者
U.S. Dept. of Agriculture, Natural Resources Conservation Service
页码
2 unnumbered pages : digital, PDF file.
其它主题
Crust vegetation; United states
语言
英语
格式
electronic resource, remote, computer, online resource
注释
USDA Natural Resources Conservation Service.
Includes bibliographical references.
Mode of access: Internet.
System requirements: Adobe Acrobat Reader.
副标题
physical and biological soil crusts
类型
Interactive Resource; Text; Bibliography; Book; Monograph; Monograph; Book; Report
团体作者
United States. Natural Resources Conservation Service.
2024-02-27
2025-07-20
MODS