H. Henry Janzen

TL;DR: In this paper, the authors explore the constraints and barriers to implementation important for GHG mitigation in agriculture and also examine how climate and non-climate policy in different regions of the world has affected agricultural GHG emissions and how it may affect emissions and mitigation implementation in the future.

TL;DR: This paper reviewed the global carbon cycle, examined how humans have modified it, and contemplate (from a soil science bias) the new questions that await us on a changing earth, not to propose a way forward, but to invite conversation about opportunities that have emerged.

TL;DR: In this article, the authors examine the magnitude of the potential for carbon sequestration in the soil as a means of reducing carbon dioxide (CO2) in the atmosphere, some of the measures that might be used to achieve this potential, and the methods available for estimating carbon sequentration on a farm or regional level, what is needed to achieve international consensus, and additional information needs.

TL;DR: In this paper, the root-derived carbon (C) in these coefficients was estimated by reviewing studies reporting information on plant shoot-to-root (S:R) ratios (n = 168), which were highest for small-grain cereals (7.4), followed by corn (5.6), and lowest for forages (1.6).

TL;DR: Grazing lands are estimated to contain 10-30% of the world's soil organic carbon, and given the size of the C pool in grazing lands the authors need to better understand the current and potential effects of management on soil C storage.