| Biogeochemical evaluation of Nannorrhops ritchiana： A Mg-flora from Khuzdar, Balochistan, Pakistan |
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| 作者姓名： | Sadaf Naseem Shahid Naseem Erum Bashir Khaula Shirin Shamim A. Sheikh |
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| 作者单位： | [1]Department of Geology, University of Karachi, Karachi 75270, Pakistan [2]PCSIR Laboratories Complex, off University Road, Karachi, Pakistan |
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| 基金项目： | We are highly indebted to Mr. Shabbir Ahmed Baloch, proprietor, Industrial Mineral Syndicate, Karachi, for his enthusiasm and encouragements during the field work and providing logistic support. We also sincerely thank the inhabitants and tribe chief of the area for their great hospitality and allowing us to work in the area. |
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| 摘 要： | Nannorrhops ritchiana （ Mazari Palm） is a distinctive flora growing in the Saharo-Sindian region. It is well distributed on the ultramafic soil, derived from the Bela Ophiolite in the Khuzdar District, Balochistan, Pakistan. Quantitative estimation of Ca, Mg, Fe and Ni in soil and plant ash has been carried out. The constituents of plant ash have been discussed in relation to soil chemistry, pH, climate, mobility, average abundance in plant ash and exclusion mechanism of the flora. Relationship among Ca, Mg, Fe and Ni has been established using scattergrams to evaluate the biogeochemistry of the plant. High contents of Mg and high coefficient of biological absorption allow it to be classed as Mg-flora. Both Ca and Fe appeared to be antagonistic to Mg. The metal assemblage of N. ritchiana nicely reflected the nature of the bed rock as being serpentinized ultramafic, and its corresponding soils. Good exclusion mechanism of N. ritchiana did not allow it to absorb high Ni from the soil. Relatively high concentrations of Ni in N. ritchiana from the Baran Lak area can be used to localize Ni-mineralization in the study area. Statistical analyses, such as minimum, maximum, mean, mode, median, standard deviations, and coefficient of correlation, were also made to improve raw geochemical data and interpretations.
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| 关 键 词： | 巴基斯坦 生物化学 超碱土壤 土壤化学 |
Biogeochemical evaluation of Nannorrhops ritchiana: A Mg-flora from Khuzdar, Balochistan, Pakistan |
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| Sadaf Naseem Shahid Naseem Erum Bashir Khaula Shirin Shamim A. Sheikh.Biogeochemical evaluation of Nannorrhops ritchiana: A Mg-flora from Khuzdar, Balochistan, Pakistan[J].Chinese Journal of Geochemistry,2005,24(4):327-337. |
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| Authors: | Sadaf Naseem Shahid Naseem Erum Bashir Khaula Shirin Shamim A Sheikh |
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| Abstract: | Nannorrhops ritchiana (Mazari Palm) is a distinctive flora growing in the Saharo-Sindian region. It is well distributed on the ultramafic soil, derived from the Bela Ophiolite in the Khuzdar District, Balochistan, Pakistan. Quantitative estimation of Ca, Mg, Fe and Ni in soil and plant ash has been carried out. The constituents of plant ash have been discussed in relation to soil chemistry, pH, climate, mobility, average abundance in plant ash and exclusion mechanism of the flora. Relationship among Ca, Mg, Fe and Ni has been established using scattergrams to evaluate the biogeochemistry of the plant. High contents of Mg and high coefficient of biological absorption allow it to be classed as Mg-flora. Both Ca and Fe appeared to be antagonistic to Mg. The metal assemblage of N. Ritchiana nicely reflected the nature of the bed rock as being serpentinized ultramafic, and its corresponding soils. Good exclusion mechanism of N. Ritchiana did not allow it to absorb high Ni from the soil. Relatively high concentrations of Ni in N. Ritchiana from the Baran Lak area can be used to localize Ni-mineralization in the study area.Statistical analyses, such as minimum, maximum, mean, mode, median, standard deviations, and coefficient of correlation, were also made to improve raw geochemical data and interpretations. |
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| Keywords: | Balochistan biogeochemistry Khuzdar Mg-flora Nannorrhops ritchiana Pakistan |
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