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Showing items 70327 through 70335 of 73379.Dipterocarps are one of the best known and commercially important groups of tropical trees. They preside over some of the most magnificent forest formations in the world. Exploitation of dipterocarp-dominated tropical rain forests has expanded rapidly in the past 20 years.
With the rapid growth of biofuel production and consumption and the proliferation of policy decisions supporting this expansion, concerns about the biofuel sector’s environmental and social impacts are increasing.
Fire in the wet tropical climate of Indonesia is not a new phenomenon. The 'Great Fire of Borneo' in 1982-83 was one of the worst fire events in recent decades. Small holders clearing land for cultivation were primarily blamed for starting fires that rapidly spread out of control.
Reviews various approaches and techniques used in a number of sub-Saharan African countries to collect and analyze data on large-scale ecological changes with particular reference to remote sensing and monitoring techniques in resource inventory; suggests ways to build more effective data bases.<
Besides India, there are a few other countries like Mexico, Spain, Pakistan, Bangladesh and China which also make intensive use of groundwater.
Approximately half of the irrigated area of Iran falls under different types of salt-affected soils and average yield losses may be as high as 50 percent.
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