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您的检索式：作者名="Muhammad Aqeel ASHRAF"
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| 1 | Dramatic changes in anatomical traits of a C4 grass Chrysopogon serrulatus Trin.(Poaceae)over a 1000 m elevational gradient显示文摘Chrysopogon serrulatus(false beard-grass)is a dominant component of vegetation in the foothills of the Himalayas.To study whole plant morphology,individuals of C.serrulatus were collected from three plots at each of six locations spanning from 400 to 1,400 m.The population colonizing the highest elevation modifications in different plant organs.Roots showed increased metaxylem number and area.In the stem,especially outside of the vascular tissue,there was intensive sclerification indicative of increased xeromorphy as a survival strategy.At the highest elevation,leaves were wider;aerenchyma formation and increased sclerification were noted in the leaf sheath;and a greater proportion of storage parenchyma was observed in the leaf blade,all indicators of succulence.In contrast,leaves at lower elevations had xeric morphological features such as increased epidermal thickness,sclerification and more developed metaxylem area.In conclusion,shifting of morphological features in below-and above-ground plant parts of C.serrulatus were linked to shifts in environmental factors along this elevation gradient,thus enabling the successful distribution of this species along this elevation gradient. | FATIMA Sana HAMEED Mansoor AHMAD Farooq AHMAD Muhammad Sajid Aqeel ANWAR Majid MUNIR Mahwish ASHRAF Muhammad SHAH Syed Mohsan Raza BASHARAT Sana AHMAD Iftikhar KHALIL Sangam | 2023 | Journal of Mountain Science2023，20，5： | 0 |
| 2 | Effects of Lateral Variation in Vegetation and Basin ‘Dome' Shape on Tropical Lowland Peat Stabilisation in the Kota Samarahan-Asajaya Area, West Sarawak, Malaysia显示文摘Field surveys indicate lateral variation in peat humification levels(von Post) in dominantly occurring fibric, fibric to hemic, sapric and hemic to sapric peats across a gradient from the margin towards the centre of tropical lowland peat domes. Cement-peat stabilisation can be enhanced by adding mineral soil fillers(silt, clays and fine sands) obtained from Quaternary floodplain deposits and residual soil(weathered schist). The unconfined compressive strength(UCS) of the stabilised cement-mineral soil filler-peat mix increases with the increased addition of selected mineral soil filler. Lateral variation in the stabilised peat strength(UCS) in the top 0 to 0.5 m layer was found from the margin towards the centre of the tropical lowland peat dome. The variations in the UCS of stabilised tropical lowland peats along a gradient from the periphery towards the centre of the peat dome are most likely caused by a combination of factors due to variations in the mineral soil or ash content of the peat and horizontal zonation or lateral variation in the dominant species of the plant assemblages(due to successive vegetation zonation of the peat swamp forest from the periphery towards the centre of the tropical lowland peat dome). | Mohamad Tarmizi Mohamad ZULKIFLEY Tham Fatt NG John Kuna RAJ Roslan HASHIM Muhammad Aqeel ASHRAF | 2014 | Acta Geologica Sinica(English Edition)2014，88，3： | 0 |
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