Skjemstad

Climate Change, Carbon and Plants Briefings
CRC for Greenhouse Acounting, Australia, 2006
At the briefings, leading scientists presented the latest information on how climate change might affect plants and plant-based industry, and how we might adapt.
Two briefings were held in 2006 - one in Melbourne on the 31st May and one in Sydney on the 13th June. In response to numerous requests from people unable to attend the briefings in person, the presentations were recorded and are now available online.
'Questions' and 'Panel' sessions include audience questions and discussion between presenters and audience, expanding on the material provided in the presentations.
Introduction
Future climates and Australia's greenhouse profile - Dr Michael Robinson [EXE, 10.51MB]
Questions and discussion [Melbourne] [MP3, 2.27MB]
Stream 1 - Carbon in the Landscape
Biomass carbon and Land Use Changes - Dr John Raison [EXE, 15.60MB]
Questions - [Sydney] [MP3, 7.82MB] [Melbourne] [MP3, 10.44MB]
Wood products as carbon stores; TimberCam - Mr Fabiano Ximenes [EXE, 10.94MB]

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Soil Organic Carbon
Jan Skjemstad, CRC Greenhouse Accounting

In Summary

Soil OC is a significant source and sink of atmospheric CO2

Soil is a complex, biologically active medium

Soil OC is not one material

Changes in SOC can be measured directly or can be modelled

The C sink value of soils is limited BUT increasing and maintaining SOC has many benefits for improved productivity and soil resilience

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Charcoal Carbon in U.S. Agricultural Soils
Jan O. Skjemstad*,a, Donald C. Reicoskyb, Alan R. Wiltsb and Janine A. McGowana
Soil Science Society of America Journal (SSSAJ), 66:1249-1255 (2002)

a CSIRO Land and Water and CRC for Greenhouse Accounting, Private Bag No. 2, Glen Osmond, SA, Australia 5064
b USDA-ARS, North Central Soil Conservation Research Lab, 803 Iowa Ave., Morris, MN 56267
* Corresponding author (Jan.Skjemstad@csiro.au)

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https://www.soils.org/publications/sssaj/abstracts/66/4/1249

Jan O. Skjemstad *a, Jan.Skjemstad@csiro.au
Donald C. Reicoskyb,
Alan R. Wiltsb and
Janine A. McGowana

abstract:
High levels of charcoal C resulting from repeated historical burning of grasslands, open woodlands, and agricultural crop residues have been reported in soils from Australia and Germany. In this study, five U.S. soils were selected from long-term research plots in widely different agricultural areas. The charcoal C content was estimated on each soil using a combination of physical separation, high energy photo-oxidation and solid-state 13C nuclear magnetic resonance (NMR) spectroscopy. These analyses showed that all five soils contained measurable amounts of charcoal C,

doi: 10.2136/sssaj2002.1249

Manage carbon to sustain soil structure
Jan Skjemstad, CSIRO LAND AND WATER AND CRC FOR GREENHOUSE ACCOUNTING in FARMING AHEAD No. 158 March 2005

Soil organic carbon plays a critical role in the biological, chemical and physical health of a soil. But little is known about how crop management impacts on soil organic carbon levels and thus soil health. This article describes how a new approach to understanding this relationship could help farmers better manage soil organic carbon.

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Australian approaches to measuring and monitoring soil organic carbon
Jeff Baldock, Jan Skjemstad, Evelyn Krull
CSIRO Land and Water and CRC for Greenhouse Accounting PMB 2, Glen Osmond, SA 5064, Australia

SOC measurement and composition
Temporal variation in SOC content
delling measurable SOC fractions
Monitoring SOC contents in Australia (National
Carbon Accounting System, NCAS)

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THE NATURE, DISTRIBUTION, AND IMPACT OF CHARCOAL IN SOILS. J. O. Skjemstad, L. J. Janik,and L. R. Spouncer, CSIRO, Land and Water, PMB 2, Glen Osmond, South Australia 5064. Jan.Skjemstad@adl.clw.csiro.au. 1998

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Black Carbon Increases Cation Exchange Capacity in Soils
Liang et al. Soil Sci Soc Am J.2006; 70: 1719-1730

Authors:
B. Liang, J. Lehmann, D. Solomon, J. Kinyangi, J. Grossman, B. O'Neill, J. O. Skjemstad, J. Thies, F. J. Luiz

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