Natural capital has been a key contributor to the subregion’s rapid economic growth over the past 3 decades or so. However, the subregion’s key natural capital stocks are in a state of decline. This is evident by the degradation of arable landconsiderable losses in forests, wetlands, and mangrovesand many species of fauna and flora becoming endangered or even extinct. The Greater Mekong Subregion (GMS) is poised to continue developing at a significant pace.