Since our natural resources are not inexhaustible, we should focus more on resource depletion
problem such as: overfishing, deforestation, water crisis, land degradation, soil desertification,
habitat destruction, and biodiversity loss. Researchers Trisophon and Punyawadee (2003)
stressed that “drastic deforestation and resource depletion in Thailand has long been a
recognized problem, drawing much attention and activities from both government and nongovernment
organizations.”