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Review of the Draft Second State of the Carbon Cycle Report (SOCCR2) (2018) / Chapter Skim
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Chapter 5: Agriculture
Pages 53-56

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 53...
... The authors acknowledge the significant co-benefits of managing agro-ecosystems for increasing SOC, which include improved water holding capacity and nutrient status. The chapter is generally well-constructed and the major conclusions are amply supported by cited references; however, some improvements could be made.
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From page 54...
... Spatial variation often swamps temporal trends in SOC. The best indicator of how management/crop type/land use change effects SOC may be eddy covariance -- a direct measurement of Net Ecosystem Exchange.
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From page 55...
... Some of these crops increase SOC by as much as 1 Mg/yr after removal of aboveground biomass. P226, Line 14-20 There is enormous potential of perennial bioenergy crops to restore SOC and reduce N20 P227, Line 7-8 Not consistent w/effects of intensive agriculture on SOC P227 Line 33-34 Remove "such as nitrates" from the end of the sentence and place before "also" P233, Line 37 Delete the word "managing" P248, Figure 5.1.
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Key Terms

  • affect soc
  • enormous potential
  • aboveground biomass
  • values represent
  • methane emissions

  • common understanding
  • change effects
  • intensive tillage
  • carbon cycling
  • build soc

  • expected increases
  • holding capacity
  • bioenergy crops
  • including trends
  • short shrift

  • human decision
  • projected increases
  • statistical tests
  • carbon mineralization
  • soc beginning

  • soil carbon
  • economic drivers
  • land fallow
  • entirely consistent
  • statistical treatment

  • crops increase
  • ecosystem exchange
  • measuring changes
  • water holding
  • soc changes


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