Phytogeography of Genu and Homag, two mountains with an Irano–Turanian flora in the Saharo–Sindian regional zone, south Iran

The Saharo-Sindian regional zone encompasses the flat and arid areas of North Africa, the Arabian Peninsula, southern Iran and the deserts of Pakistan and W India. There are some scattered mountains situated within this area like Hoggar in Sahara, Saint Catherine in Sinai and Genu and Homag in southern Iran. These highlands serve as interglacial refugia for cold adapted plant species. In the present study, phytogeographical patterns and relationships of the flora of Genu and Homag mountains are assessed and discussed in comparison to the phytogegraphy of the flora of low-lying Hormoz Island. According to chorological assesments of the flora, Genu and Homag mountains belong to theIrano-Turanian region with 59% of the species restricted to this area. However the surrounding lowland plains are part of the Saharo-Sindian area with a rather high proportion of the widespread species (17%) and Somalia-Masai linking elements (20%). It is noteworthy that several Turanian enclaves also occur in ...

撒哈拉-信德地区带（Saharo-Sindian regional zone）涵盖了北非、阿拉伯半岛、伊朗南部以及巴基斯坦和印度西部的平坦干旱区域。该区域内散布着若干山脉，如撒哈拉的霍加尔山脉（Hoggar）、西奈半岛（Sinai）的圣凯瑟琳山脉（Saint Catherine），以及伊朗南部的盖努山脉（Genu）和霍马格山脉（Homag）。这些高地是适应寒冷气候的植物物种的间冰期避难所（interglacial refugia）。本研究评估并探讨了盖努山脉和霍马格山脉植物区系的植物地理格局（phytogeographical patterns）与关系，并将其与低洼的霍尔木兹岛（Hormoz Island）植物区系的植物地理学特征进行了对比分析。根据植物区系的分布区学评估（chorological assessments），盖努山脉和霍马格山脉属于伊朗-图兰区（Irano-Turanian region），其中59%的物种仅限于该区域。然而，周边的低地平原属于撒哈拉-信德地区，其中广布种（widespread species）（17%）和索马里-马赛连接成分（Somalia-Masai linking elements）（20%）的比例相当高。值得注意的是，若干图兰区飞地（Turanian enclaves）也出现在...