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Title: Life Form and Floristic Characteristics along Altitudinal Gradient of Humid Temperate Forests Located in Remote Area of Pakistan
Authors: Mohib Shah; Farrukh Hussain; Syed Noor Muhammad Shah; Imran Ahmad ; Humaira Wasila
Aff: Department of Botany, Abdul Wali Khan University Mardan, KPK, Pakistan
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Keywords: “Life Form”; “leaf Form”; “altitude”; “chakesar”; “shangla”
Abstract:The life form and floristic characteristics were evaluated in Chakesar valley, District Shangla during 2007-2011. The study showed that the valley supported 319 plant species belonging to 85 families and 215 genera. 75 families of dicotyledons have 178 genera and 276 species, while 5 families of monocotyledons have 26 genera and 30 species. Gymnosperms have only one family Pinaceae with 3 genera and 5 species. The pteridophytes have 8 genera belonged to 4 families. The fungi had only species Morchellaescullenta. Poaceae with 26 species followed by asteraceae (25 species), Papillonaceae & Rosaceae (each with 21 species), Moraceae (10 species), and Polygonaceae and Solanaceae (each with 9 species) were the leading families in terms of number of species.The biological spectrum of the flora of Chakesar Valley revealed that it is mainly shaped as therophytic vegetation, as there were 173 species (54.23%) therophytic species. The cryptophytes constituted 11.6%, chamaephytes 10.34%, microphanerophytes 10.03% and nanophanerophytes 6.3%. Mesophanerophytes, hemicryptophytes and megaphanerophytes contributed 3.5%, 2.5% and 1.6%, respectively. The area is mostly characterized by subtropical vegetation in the lower area while Kandao site (altitude 1900 meters to 2500 meter asl.) dominated by mesophanerophytes.