Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2012 Dec 24;110(4):1167–1174. doi: 10.1073/pnas.1206276110

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

PMC Copyright notice

Fig. 3. — Stable carbon-isotope compositions for SOM (δ¹³C_SOM; bottom x axis) and nC₃₁ (δ¹³C₃₁; top x axis) relative to woody plant cover (A), ecosystem (B), and plant community composition (C). The published relationship between woody plant cover and δ¹³C_SOM is described by the following function, where −13 ≤ δ¹³C_SOM ≥ −31‰ (10): . Here, we relate δ¹³C_SOM to δ¹³C₃₁ using a value of 9‰ for ɛ_SOM/31. The relationship between woody plant cover and δ¹³C₃₁ is, thus, described by the following function, where −22 ≤ δ¹³C_SOM ≥ −40‰): . Ecosystem definitions adhere to African plant communities according to UNESCO terminology (40).

Inline graphic — Stable carbon-isotope compositions for SOM (δ¹³C_SOM; bottom x axis) and nC₃₁ (δ¹³C₃₁; top x axis) relative to woody plant cover (A), ecosystem (B), and plant community composition (C). The published relationship between woody plant cover and δ¹³C_SOM is described by the following function, where −13 ≤ δ¹³C_SOM ≥ −31‰ (10): . Here, we relate δ¹³C_SOM to δ¹³C₃₁ using a value of 9‰ for ɛ_SOM/31. The relationship between woody plant cover and δ¹³C₃₁ is, thus, described by the following function, where −22 ≤ δ¹³C_SOM ≥ −40‰): . Ecosystem definitions adhere to African plant communities according to UNESCO terminology (40).