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Purdue researchers propose way to incorporate deforestation into climate change treaty
Date:4/22/2008

elp the developed countries obtain the carbon credits they need and will improve the success of policies because more players are involved."

Gurney said the approach has technical advantages over current proposed deforestation policies that would create a baseline and compare deforestation rates relative to it.

"The baseline approach would use historical data and projections of the future, which is technically very difficult to do," Gurney said. "We have a poor understanding and limited historical data on deforestation rates, and predicting what the baseline may be in the future is always iffy."

The Preservation Pathway approach would use satellite imagery to measure success.

Satellites could be used to monitor the forests' canopy cover, which allows for measurement of relative change from one year to the next.

"The Preservation Pathway would only require a relative rate of change and not precise measurements," Gurney said. "It is extremely difficult to reliably measure the emissions from large forest expanses. To accomplish that would require someone on the ground taking measurements, and there are tropical forests where few people have ever set foot.

"This approach relies on the tools we have now and what we know, and it avoids what we don't know," he said. "It gets around some of the technical problems and scientific uncertainties that often slow policy-making."

Next, the research team will evaluate details of the proposed policy. The team will use specific countries as examples and will evaluate various aspects of the approach, including to what degree a satellite can evaluate deforestation rates and what amount of money would be sufficient compensation for the earned credits.

"This approach is a path between now and the end of deforestation," Gurney said. "It does not dictate a percentage rate drop over a set period of time. It is a path all the way to the end, and each can take the path at
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Contact: Elizabeth K. Gardner
ekgardner@purdue.edu
765-494-2081
Purdue University
Source:Eurekalert

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