Floristic characterisation of alkali soils in northwestern India |
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Authors: | R S Rana V Parkash |
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Institution: | (1) Central Soil Salinity Research Institute, 132 001 Karnal, India |
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Abstract: | Summary Floristic composition studied in a 40 hectares representative site of alkali soils in the Indo-gangetic plains of Northwestern
India revealed a remarkably restricted spectrum of natural vegetation. Soil analysis of specific niches, occupied by aggregations
of different species, was employed to identify alkali halophytes. Response functions of eight prominent species to increasing
levels of soil alkalinity, studied in pot culture, showed that most of them were adapted to alkali soils. Based on the computed
importance value indices and observed biomass production maxima, it has been inferred thatSporobolus marginatus, Sporobulus coromandelianus, Diplachne fusca andChloris barbata, qualify as plant indicators of high-alkali soil conditions. |
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Keywords: | Alkali halophytes Alkali soil flora Alkaliphilous species Biological indicators Plant indicators Soil stress adaptation |
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