By using a combination of crop growth, hydrological, carbon and nitrogen cycle models, researchers found that the estimated land suitable for bioenergy grasses — particularly Miscanthus, the most productive bioenergy crop — is limited, despite its relatively high biomass productivity and low water consumption per unit of ethanol. (sciencedaily.com)
Although certain biomes are sensitive to constraints on biomass productivity and others to atmospheric conditions promoting combustion, substantial and rapid shifts are projected for future fire activity across vast portions of the globe. (dotearth.blogs.nytimes.com)
A clear, odorless gas that is non-toxic to humans at many times ambient concentrations, carbon dioxide is an essential plant nutrient, and elevated concentrations boost most plants» biomass productivity, water use efficiency, and resistance to environmental stresses such as ozone pollution. (masterresource.org)