作者: C. E. Clapp , M. H. B. Hayes , A. J. Simpson , W. L. Kingery
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摘要: 【Summary】 Humic substances (HSs) are by far the most abundant of organic components nature, and present in all soils natural waters that contain matter. The more widely accepted values for carbon (OC) soil matter (SOM) range (14~15)×10 17