Soil Organic Carbon: Nano-Scale Stabilization to Global-Scale Climate Implications

Event Details
  • Date/Time:
    • Thursday April 5, 2018
      11:00 am - 11:50 am
  • Location: Ford Environmental Science & Technology Bldg., Rm. L1205
  • Phone: 404-894-1757
  • URL:
  • Email:
  • Fee(s):
    Free
  • Extras:
Contact

Host: Yuanzhi Tang

Logistics: Natasha Lawson

Summaries

Summary Sentence: A seminar by Dr. Johannes Lehmann, School of Earth and Atmospheric Sciences Spring 2018 Seminar Speaker Series

Full Summary: No summary paragraph submitted.

Media
  • Johannes Lehmann Johannes Lehmann
    (image/jpeg)

EAS Spring 2018 Seminar Series Presents: Dr. Johannes Lehmann, Cornell University

Soils harbor large amounts of organic carbon that exceed the carbon in the plants and atmosphere combined. Soil organic matter is also a very heterogeneous mixture encompassing weakly decomposed plant matter to highly oxidized and reactive microbial metabolites. 

Recent insights of the spatial distribution and the molecular properties led to a shift away from secondary synthesis to recalcitranthumic substances towards a soil continuum model. Persistence is then conferred by environmental conditions rather than intrinsic molecular recalcitrance. Interactions with minerals as well as encapsulation within aggregation are currently perceived as the main drivers for carbon persistence in soil. Increasing soil carbon stocks by a comparably low proportion may be utilized to draw down carbon dioxide levels in the atmosphere and thereby mitigate climate change. 

A range of avenues exist that are explored, and despite burgeoning political efforts a comprehensive and actionable roadmap remains elusive.

Additional Information

In Campus Calendar
Yes
Groups

EAS

Invited Audience
Faculty/Staff, Graduate students, Undergraduate students
Categories
Seminar/Lecture/Colloquium
Keywords
EAS Seminar
Status
  • Created By: nlawson3
  • Workflow Status: Published
  • Created On: Dec 21, 2017 - 9:56am
  • Last Updated: Feb 22, 2018 - 3:03pm