Improved cropping practices increased dryland rice production from 700 to 1000 kg per hectare to 2 000 to 3 000 kg per hectare, with similar increases in maize production.
For example, increasing dryland and stream salinity resulting from past deforestation and current farming practices could affect significant areas in Australia.
Population increase in dryland related to rainfall indicates the pressure on land.
The paper, "Termite mounds can increase the robustness of dryland ecosystems to climatic change," was published Feb. 6 in the journal Science.
Irrigation can be used to guarantee grass and crop growth as summer droughts become more frequent, while exotic grasses and legumes can be used to increase productivity of native dryland grasslands to better buffer these systems.
The dryland farming increased water infiltration and unsaturated hydraulic conductivity when compared to the other land uses.
One day, there will be new fuels, improvements in dryland farming and increases in the efficiency with which water is used.
The experience of private game ranching demonstrates that wildlife can greatly increase the economic output from drylands.
Introduce a disturbance though, such as domestic livestock grazing, off-highway vehicles, fire or energy development, and these dryland regions can see increases in levels of airborne sediment orders of magnitude higher than levels in undisturbed soil, sometimes increasing as much as 40-fold.
Landscape complexity is thought to increase plant diversity in Mediterranean dryland cereal fields, although this assumption has not been tested specifically for rare arable plants (RAP).
