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Thriving green havens in baking deserts:Plant diversity and species composition of urban plantations in the Sahara Desert

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Journal of Arid Land 2024年第9期16卷 1270-1287页

作者： mohammed souddi Haroun CHENCHOUNI M'hammed BOUALLALA Laboratory of Saharan Natural Resources Faculty of Nature and Life SciencesUniversity of Ahmed Draia-AdrarAdrar 01000Algeria Laboratory of Algerian Forests and Climate Change Higher National School of ForestsKhenchela 40000Algeria Laboratory of Natural Resources and Management of Sensitive Environments University of Oum El BouaghiOum El Bouaghi 04000Algeria Higher School of Saharan Agriculture Adrar 01000Algeria

Hot arid zones represent vital reservoirs of unique species and ecosystems,holding significant importance for *** study aimed to explore the plant diversity associated with tree plantations in urban ecosystems under hyper-arid climatic conditions in the Sahara Desert of *** May 2022,30 quadrats measuring 1 m^(2) each were established at the base of Phoenix dactylifera,Leucaena leucocephala,and Tamarix aphylla,corresponding to the dominant tree species in each of three *** each quadrat,the plant quantitative inventory was conducted to measure plant diversity and similarity among the studied *** on this,we assessed the plant functional traits and rarity/abundance status of the *** findings revealed a diverse flora associated with the studied plantations,comprising 29 plant species grouped into 27 genera and 12 ***,Poaceae(accounting for 30.8% of the flora),Asteraceae(25.0%),and Zygophyllaceae(21.6%)were *** an overall density of approximately 555 individuals/m^(2),Zygophyllum album(120 individuals/m^(2))and Polypogon monspeliensis(87 individuals/m^(2))emerged as the most abundant *** trait analysis underscored the pivotal role of therophytes(constituting over 50.0% of the flora)and anemochorous species(33.0%-62.5%).Phytogeographic analysis emphasized the prevalence of the Saharo-Arabic element(constituting over 31.0% of the flora)and the Mediterranean Saharo-Arabic element(9.5%-21.5%).The Cosmopolitan element thrived under disturbance factors,recording percentages from 13.0% to 20.0% of the plant *** rarity/abundance status of the flora emphasized the significance of rare,common,and very common species in the studied *** findings could provide fundamental data for the effective control and management of biodiversity in hot hyper-arid urban ecosystems.

关键词： urban plantations plant diversity plant functional traits rarity/abundance status Sahara Desert Algeria

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