TThe Khao Hin Sorn Royal Development Study Centre, located at Phamon Sarakham District, Chachoengsao Province, focusing on development and rehabilitation of land and water resources;
The Pikun thong Royal Development Study Centre, located at Muang District, Narathiwat province, focusing on study and development of deteriorating swamp land for agricultural use;
The Puparn Royal Development Study centre, located at Ban Na Nok Khao, Huai Yang Sub-district, Muang District, Sakon Nakhon Province, focusing on experimentation of various aspects of agricultural development for the sandy-soiled areas facing soil deterioration and water shortage;
The Huai Hong Krai Royal Development Study Centre, located at Khun Mae Kuang, Doi Saket District, Chiang Mai Province, focusing on study of development patterns of watershed areas due to deforestation, which causes drought, and forest fires;
The Husi Sai Royal Development Study Centre, located at Sam Phraya Subditrict, Cha-am District, Petchaburi Province, focusing on restoration of ecological balance and rehabilitation of deteriorated forests to prevent desertification;
The Kung Krabaen Bay Royal Development Study Centre, located in Kong Kud Sub-district, Tha Mai District, Chantaburi Province, focusing on study, research and experimentation on improvement of the environment relating to fisheries and agriculture in the eastern coastal areas in Chantaburi Province.