- 著者
- Satoru TANAKA Simpei TAKAHASHI Rikako KIMURA Sawahiko SHIMADA
- 出版者
- The Japanese Association for Arid Land Studies
- 雑誌
- 沙漠研究 (ISSN:09176985)
- 巻号頁・発行日
- vol.32, no.3, pp.62, 2022-12-30 (Released:2022-12-30)
- 参考文献数
- 2
In the Republic of Djibouti in east Africa, desert greening and animal feed production are needed. It is crucial to select appropriate plant species for both activities. The flora of Djibouti does not serve information on the frequency of occurrence, and the actual abundance of plant species is not clear. Therefore, it is important to get information on the abundant plant found in Djibouti. The Global Biodiversity Information Facility (GBIF) database has been developed in order to assess global biodiversity as a web-based resource. The database records the occurrence of organisms all over the world by integrating specimens and discovery information. By using this database, we tried to grasp the vascular plant species, frequently found in Djibouti. The purpose of this study is to provide basic data of the plant species in Djibouti especially on frequency in occurrence of vascular plants, by using the GBIF database, for understandings of the potential in greening and grazing.As a result of searching the GBIF database, the total number of vascular plants registered was found to be 6982, and the total number of plant species was 561 (GBIF.org 2021). In the literature, the number of vascular plants was 783 in Djibouti (Audru & Lebrun 1994). Thus, 71.6% of the species are registered in the GBIF database. The most frequent registered family was discovered to be Fabaceae (19.2%), followed by Poaceae (10.9%), Asteraceae (8.0%), Solanaceae (4.8%) Malvaceae (4.4%) and Euphorbiaceae (4.4%). The most frequent registered species was discovered to be Vachellia (Acacia) tortilis (3.8%), after that Solanum somalense (2.2%) and Rhigozum somalense (2.1%). Vachellia spp. accounted for 5 out of the top 10 species. It was considered that the Fabaceae can grow on infertile soil by nitrogen fixation. Poaceae and Asteraceae are most evolved taxa and they considered to have been adapted to arid lands. Rank-frequency relationship (log-log scale) were significantly on a line (P<0.001), following to the Zipf’s law.