The giant freshwater Mekong River stingray is just one of many mega fish species that could be threatened by dam-building plans in the Mekong River Basin.

The plenty of loose solid materials, precipitous slopes, and the freguenf rain storms, are the main reasons for the formation of the debris flow in the valley.

The participatory planning method and its'application in comprehensive land planning revision was studied, taking Huangling micro-watershed in Jiangxi Province as a case.