Some 400 students, monks and activists were stopped from a peaceful march for Environmental Day on Thursday.
Indigenous villagers in Mondolkiri province say relevant authorities that are supposed to crack down on forestry crimes instead collude with logging companies.
A group of 20 women from various indigenous groups from across the country met in Phnom Penh on Wednesday, calling economic land concessions the top threat to their way of life.
Villagers say police and forestry officials turn a blind eye to illegal logging by companies with powerful businessmen behind them.
Hundreds of demonstrators gathered outside the government’s Anti-Corruption Unit on Thursday, demanding investigations into a variety of land grabs, forced evictions and other crimes.
Tourists in Cambodia are being given the chance to get up close with rare and endangered bird species.
The villagers say a Vietnamese rubber company began developing in the area in 2008, ultimately evicting some 400 families from their homes across more than 2,000 hectares of land.
At least 120 companies, most of them Chinese, have obtained mining licenses in the last decade, as they seek precious metals, oil and gas in Cambodia.
The tribes say some 2,000 families could be affected by a concession granted to the company, which has begun clearing some 47,000 hectares of land in the province.
Vietnam calls on Laos to consult with other river countries before completing construction of two dams on lower Mekong.
In its annual “Asian Development Outlook,” the bank said it expects to see a drop in the rate from about 7.2 percent last year to 7 percent this year.
Ahead of this week’s meeting of the Mekong River Commission, 39 international environmental groups called on the government to halt construction on the Xayaburi dam before February 2015.