автор: John M. Kimble

Much attention has been given to above ground biomass and its potential as a carbon sink, but in a mature forest ecosystem 40 to 60 percent of the stored carbon is below ground. As increasing numbers …

Soil Degradation in the United States: Extent, Severity, and Trends examines the magnitude and severity of soil degradation by different processes in the U.S., including water erosion, wind erosion, …

World soils contain about 1500 gigatons of organic carbon. This large carbon reserve can increase atmospheric concentrations of CO2 by soil misuse or mismanagement, or it can reverse the ‘greenhouse’ …

World soils contain about 1500 gigatons of organic carbon. This large carbon reserve can increase atmospheric concentrations of CO2 by soil misuse or mismanagement, or it can reverse the ‘greenhouse’ …

Soil Management and Greenhouse Effect focuses on proper management of soils and its effects on global change, specifically, the greenhouse effect. It contains up-to-date information on a broad range …

Soil Management and Greenhouse Effect focuses on proper management of soils and its effects on global change, specifically, the greenhouse effect. It contains up-to-date information on a broad range …

Tropical ecosystems — the regions between the tropics of Cancer and Capricorn — play an important role in global processes, economic issues, and political concerns. In their natural state, tropical e …

Tropical ecosystems — the regions between the tropics of Cancer and Capricorn — play an important role in global processes, economic issues, and political concerns. In their natural state, tropical e …

Much attention has been given to above ground biomass and its potential as a carbon sink, but in a mature forest ecosystem 40 to 60 percent of the stored carbon is below ground. As increasing numbers …

The potential to mitigate greenhouse gas emissions and global climate change is one factor driving agricultural policy development of programs that might pay farmers for practices with a high potenti …

Grazing lands represent the largest and most diverse land resource-taking up over half the earth’s land surface. The large area grazing land occupies, its diversity of climates and soils, and the pot …

Better Manage Soil C for Improved Soil Quality In the United States, soil has fueled the availability of abundant, safe food, thus underpinning economic growth and development. In the future we need …

Global Climate Change and Cold Regions Ecosystems provides information on soil processes and the carbon cycle in cold ecoregions as well as the soil carbon pool and its fluxes in the soils of cold ec …

Since carbon sequestration in soils reduces the amount of carbon available to the atmosphere, the Kyoto Protocols have heightened interest in soil carbon pools and their effect on carbon fluxes. Asse …

Computer Support for Collaborative Learning (CSCL) is a field of study centrally concerned with meaning and the practices of meaning-making in the context of joint activity, and the ways in which the …