The main natural resource of Alhama de Murcia is Sierra Espuña (Sierra Espuña Regional Park), with an area of 25,000 ha, of which 17,804 ha are Regional Park, shared with the municipalities of Mula and Totana. Besides Sierra Espuña is declared to be a Special Protection Area for Birds (ZEPA) and Site of Community Importance (SCI).
Other natural spaces are Barrancos de Gebas(Gebas' Gullies), declared Protected Landscape, the Saladares del Guadalentín (Guadalentín Salt Marshes), steppe ecosystem declared Protected Landscape and a Special Protection Area for Birds (ZEPA); the Sierra de la Muela, classified as Protected Natural Area; the Guadalentín River and the Parque Regional El Valle y Carrascoy (Sierra de Carrascoy Regional Park).