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[Annual Report 97 :
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Imperata grasslands of Southeast Asia

Uplands are important geographical components of Southeast Asian agriculture, particularly in the Philippines and Indonesia. Large areas of the forest uplands in both countries have been severely degraded due to logging and shifting cultivation and are now grasslands colonised by Imperata cylindrica. Although Imperata has some uses, these are of relatively low economic value and Imperata areas are inhabited by people with low incomes. Bioeconomic computer modelling was used to test the impact of improvements in technologies and policies over a range of socioeconomic settings. The models can be constructed to enable them to be used for extension and training purposes as well as for technological and policy research and investment decisions.