peninsula. Coastline and maritime claims Yemen has of coastline along the Arabian Sea, the Gulf of Aden, and the Red Sea. Yemen claims a territorial sea of , a contiguous zone of , an Exclusive Economic Zone of based on . It has a continental shelf of or to the edge of the continental margin. Natural resources Yemen's principal natural resources are oil and natural gas as well as agriculturally productive land in the west. Other natural resources include fish and seafood, rock salt, marble, and major unexplored deposits of coal, gold, lead, nickel, and copper. Land use Only 2.91 percent of Yemen is considered to be arable land, and less than 0.6 percent of the land is planted with permanent crops. About of the land is irrigated. According to the United Nations, Yemen has of forest and other wooded land, which constitutes almost 4 percent of total land area. Environmental factors Yemen is subject to sandstorms and dust storms, resulting in soil erosion and crop damage. The country has very limited natural freshwater and consequently inadequate supplies of potable water. Desertification (land degradation caused by aridity) and overgrazing are also problems. It is a party to international Biodiversity, Climate Change, Desertification, Endangered Species, Environmental Modification, Hazardous Wastes, Law of the Sea, and Ozone Layer Protection agreements. Disputed territory A long-standing dispute between Saudi Arabia and Yemen was resolved in June 2000 with the signing of the Treaty of Jeddah. This agreement provides coordinates for use in delineating the land and maritime border, including the section in the eastern desert region of Yemen that potentially contains significant amounts of oil. Friction between the two countries in recent years over security of the borders appears to have been alleviated by the establishment of joint border patrols. Following years of dispute between Yemen and Eritrea over ownership of the Hanish Islands and fishing rights in the Red Sea, in 1999 an international arbitration panel awarded sovereignty of the islands to Yemen. Relations between the two countries remain strained, however, and Yemen continues to protest Eritrean fishing in the disputed territory. See also Mountains in the Arabian Peninsula Hadhramaut Mountains List of volcanoes in Yemen References bn:ইয়েমেন#ভূগোল