สำนักงานราชบัณทิตยสภา

The Journal of the Royal Institute of Thailand Volume IV - 2012 166  Introduction Among plants and animal varieties, human is the tertiary consumer in all pyramid models: number, biomass and energy. Theoretically, the tertiary consumers could survive when they keep their number, mass and total energy in balance with plants and animals which are products and primary and secondary consumers. The overgrowth of human population or tertiary consumer during last decade is now leading to the biological alteration in food chain. More plants and animals are required for providing energy as food for human. Then, the land for agriculture and farming is of great demand. However, urbanization in many countries leads to land manipulation by human in following direction: deforestation, agriculture and construction. All of these processes lead to the change of natural land of biodiversity into man-made area. Construction makes people away from natural way of life. In addition, agriculture technology might be dangerous to human and cause deteriorating effect on environment. The authors of this article try to elaborate the problems of devastating effect to nature by human misconduct. The overgrowth of world population may, in the near future, leap across the threshold of critical mass leading to biological chaos. The model of integrating agriculture, biodiversity and health in medical science, following the philosophy of sufficiency economy, is proposed in this article. Materials and Methods As problems and future trend mentioned in the introductory part, the relevant subjects were studied as follows: Data of world population growth were analyzed using histogram plot. Population, health and environment data are estimated among countries and regions of the world with special emphasis on Thailand and Southeast Asia. To evaluate the impact of human population growth on social development, the necessaryitems of related matters (Figure 1) were selected by using the models of human basic needs. Basic needs for human compose of four main factors: food supply, drug for treatment, good shelter, and environment. The first two were selected in this study to find the good model by combination of agriculture and medical science. The models include two scenarios; optimal human population and overgrowth of human population. Biodiversity and Sustainable Agriculture for Medicine, Health, and Food