Companies acquired concessions amounting to the size of a small European country, while rural residents of Southeast Asia's Mekong region saw their landholdings shrink or disappear over the past two decades, according to researchers.
More than 5.1 million hectares of land - an area larger than Slovakia - were granted for mining and agricultural concessions in Myanmar, Laos, Cambodia, Vietnam and Thailand, according to a report by the non-profit Mekong Region Land Governance (MRLG). At the same time, forest areas have declined, said the report.
"While agricultural output and exports are growing in the Mekong as a result of the concessions, the benefits have not reached smallholders and indigenous people," said Micah Ingalls at the Centre for Development and Environment in Vientiane. "They are being undermined by policies that fail to ensure their rights or enable them to benefit," said Ingalls, an author of the report.
Across the five countries that host the Mekong River watershed, governments have lured large-scale investments in land thought to be under-utilised, to generate jobs and incomes.
The concessions have changed traditional cropping, with 80 percent of all agricultural land now given over to six export-focused crops: rice, cassava, maize, sugarcane, rubber and oil palm.
Meanwhile, the average landholding per rural household has declined over the last 10 years, while some have been pushed from their land entirely, according to the report.
Revenues generated by the concessions have been less than anticipated, and the social and environmental costs have largely been borne by the rural poor, Ingalls said. Inglas explained that such policies often fail to provide ownership rights to people who have been using land, and they ignore groups who have traditionally lived in areas granted as concessions.