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Carbon sequestration on U. S. rangelands offers promise, but not profit

Date:
September 5, 2012
Source:
Allen Press Publishing Services
Summary:
Nearly 239 million hectares of land in the United States are devoted to pastures and rangeland. Worldwide, rangelands cover about 3.6 billion hectares. Harnessing the potential for carbon sequestration from these lands could have a global impact on reducing greenhouse gas emissions.

Nearly 239 million hectares of land in the United States are devoted to pastures and rangeland. Worldwide, rangelands cover about 3.6 billion hectares. Harnessing the potential for carbon sequestration from these lands could have a global impact on reducing greenhouse gas emissions.

The current issue of the journal Rangeland Ecology & Management examines carbon sequestration in western U.S. rangelands from an economic perspective. It finds that revenues from voluntary carbon offset programs are not likely to generate enough incentive to encourage participation from rangeland managers.

Soil organic carbon in rangelands can contribute to the environment in positive ways. Increased carbon can reduce erosion and improve soil quality, soil water-holding capacity, and nutrient cycling. Although the potential for carbon sequestration on rangelands is lower than that of agricultural and forest lands, modest changes in carbon storage on rangelands hold promise to affect the carbon cycle worldwide.

Activities such as adjusting stocking rate, interseeding alfalfa, burning, fertilizing, and restoring degraded pastures can improve carbon sequestration on rangelands. Like agricultural commodities, however, carbon yields and carbon credit prices can vary widely from year to year. On the other hand, climate exchange contracts can run from 5 to 100 years, introducing another element of risk to rangeland carbon sequestration.

Carbon offset programs, such as the Chicago Climate Exchange, offer voluntary trading of carbon credits based on a cap-and-trade system. Farmers, ranchers, and foresters who conduct mitigation practices on their lands have been included in these offset programs. However, these programs have seen a downturn during the global financial crises.

This study estimated revenues for both short-term voluntary offsets and 100-year offsets that meet international standards. Prices were projected based on potential cap-and-trade legislation and on historical data. This simulation found that the carbon market does not yet offer a sufficient return on investment for rangeland managers to adopt practices that improve carbon sequestration.


Story Source:

The above story is based on materials provided by Allen Press Publishing Services. Note: Materials may be edited for content and length.


Journal Reference:

  1. John P. Ritten, Christopher T. Bastian, Benjamin S. Rashford. Profitability of Carbon Sequestration in Western Rangelands of the United States. Rangeland Ecology & Management, 2012; 65 (4): 340 DOI: 10.2111/REM-D-10-00191.1

Cite This Page:

Allen Press Publishing Services. "Carbon sequestration on U. S. rangelands offers promise, but not profit." ScienceDaily. ScienceDaily, 5 September 2012. <www.sciencedaily.com/releases/2012/09/120905141618.htm>.
Allen Press Publishing Services. (2012, September 5). Carbon sequestration on U. S. rangelands offers promise, but not profit. ScienceDaily. Retrieved April 25, 2014 from www.sciencedaily.com/releases/2012/09/120905141618.htm
Allen Press Publishing Services. "Carbon sequestration on U. S. rangelands offers promise, but not profit." ScienceDaily. www.sciencedaily.com/releases/2012/09/120905141618.htm (accessed April 25, 2014).

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