It is lawful for the Governor General by order to declare any lands other than Crown lands to be a Protected Forest whenever in his or her opinion this appears to be necessary for any of the following purposes—
(a) for protection against storms, winds, rolling stones, floods, and landslides;
(b) for the prevention of soil erosion and landslip, of the formation of ravines and torrents, and of the deposit of mud, stones and sand upon agricultural land;
(c) for the prevention of wastage of resources of timber and for securing the proper management of timber lands;
(d) for the maintenance of water supplies in springs, rivers, canals and reservoirs;
(e) for the protection of roads, bridges, railways, and other lines of communication; and
(f) for the preservation of health.