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Displaying 1326 - 1330 of 1605Ecological lessons from long-term studies in experimental forests
contribution of the Coweeta Hydrologic Laboratory to developing an understanding of long-term (1934-2008) changes in managed and unmanaged forests
Long-term records from USDA Forest Service Experimental Forests and Ranges (EF&Rs) are exceptionally valuable scientific resources and common ground for research in natural resource management. Coweeta Hydrologic Laboratory, Southern Appalachian Mountains in western North Carolina, is one of 82 EF&Rs located throughout the United States and Puerto Rico.
multistage database of field measurements and synoptic remotely sensed data to support model validation and testing in Earth observation
This paper presents a novel database of ground and remotely sensed data from the United Kingdom, which is uniquely suited to scaling-up multispectral measurements from a single plot to the scale of satellite sensor observations. Multiple aircraft and satellite sensors were involved, and most of the data were acquired on a single day in June 2006, providing a synoptic view which, at its largest extent, covered most of southern England and Wales.
Development of efficient and cost-effective distributed hydrological modeling tool MWEasyDHM based on open-source MapWindow GIS
Many regions are still threatened with frequent floods and water resource shortage problems in China. Consequently, the task of reproducing and predicting the hydrological process in watersheds is hard and unavoidable for reducing the risks of damage and loss. Thus, it is necessary to develop an efficient and cost-effective hydrological tool in China as many areas should be modeled.
Trading greenhouse gas emission benefits from biofuel use in US transportation: Challenges and opportunities
Replacing petroleum fuels with biofuels such as ethanol and biodiesel has been shown to reduce greenhouse gas (GHG) emissions. These GHG benefits can potentially be traded in the fledgling carbon markets, and methodologies for quantifying and trading are still being developed. We review the main challenges in developing such carbon trading frameworks and outline a proposed framework for the US, the main features of which include, lifecycle assessment of GHG benefits, a combination of project-specific and standard performance measures, and assigning GHG property rights to biofuel producers.