tailieunhanh - Biology of the central desert of Oman

A biological survey of the central desert of Oman was done using long distance transects. Vegetation was sparse and consisted of 200 + plant species, 22 species of mammals, 17 species of reptiles and amphibians, and more than 50 species of birds (migratory and resident). | Turk J Bot 28 2004 65-71 TOBlTAK Biology of the Central Desert of Oman Shahina A GHAZANFAR Herbarium Royal Botanic Gardens Kew Richmond Surrey TW9 3AB UK Received Accepted Abstract A biological survey of the central desert of Oman was done using long distance transects. Vegetation was sparse and consisted of 200 plant species 22 species of mammals 17 species of reptiles and amphibians and more than 50 species of birds migratory and resident . Three main vegetation types were identified based on ground substrate and the dominance of species. These were communities with Acacia Willd. Zygophyllum L. and open woodlands of Prosopis cineraria L. Druce. Over-grazing and development in the central desert has led to concerns over the conservation of the desert ecosystem in Oman. Key Words ARABIA OMAN plant communities life-forms conservation Introduction i. Boundaries of the central desert The central desert of Oman lies approximately between 18 and 22O30 N and 52 and 59 E and occupies about half of the country s land surface area Fig. 1 . It stretches in the north from the southern end of the foothills of the Hajar Mountains and reaches in the south to the edge of the north-facing slopes of the Dhofar Mountains. In the west the central desert peters into the sand sea of Rub al-Khali and in the east to Ramlat Wahibah and the eastern escarpments Huqf and the hills above the Sahil al-Jazir . Generally the central desert forms a vast featureless plain with low gravel outcrops and gravel plains covered with aeolian sand. Broad alluvial fans shallow wadis and drainage channels that drain the northern and southern mountains reach the northern and southern parts of the plains with only a few reaching the central parts. In the north-east and west low stabilised and unstabilised sand dunes border the central desert. The north-western dunes seem to have been built largely by winds associated with the northern Shamal which blows across the Arabian Gulf from the .

• Nông nghiệp
• ARABIA OMAN
• Plant communities
• Life forms
• Acacia Willd
• Zygophyllum L
• Prosopis cineraria
• Báo cáo lâm nghiệp hay
• cách trình bày báo cáo
• báo cáo lâm nghiệp
• công trình nghiên cứu lâm nghiệp
• tài liệu về lâm nghiệp