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Impact of a biochar or a biochar-compost mixture on water relation, nutrient uptake and photosynthesis of Phragmites karka

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Pedosphere 2020年第4期30卷 466-477页

作者： zainul abideen Hans-Werner KOYRO Bernhard HUCHZERMEYER Bilquees GUL M.Ajmal KHAN Institute of Sustainable Halophyte Utilization University of KarachiKarachi 75270(Pakistan) Institute of Plant Ecology Justus Liebig University GiessenGiessen D-35392(Germany) Institute of Botany Gottfried Wilhelm Leibniz UniversityHannover D-30419(Germany)

Soil water and nutrient status are both of major importance for plant appearance and growth *** objective of this study was to understand the effect of biochar(1.5%)and a biochar-compost mixture(1.5%biochar+1.5%compost)on the performance of Phragmites karka plants grown on a synthetic nutrient-poor sandy clay soil(50% sand,30% clay,and 20% gravel).Indicators of plant performance,such as growth,lignocellulosic biomass,water status(leaf water potential,osmotic potential,and turgor potential),mineral nutrition status,leaf gas exchange,and chlorophyll fluorescence,and soil respiration(carbon dioxide(CO2)flux)were assessed under greenhouse ***-treated plants had higher growth rates and lignocellulosic biomass production than control plants with no biochar and no *** was also a significant increase in soil respiration in the treatments with biochar,which stimulated microbial *** increase in soil water-holding capacity after biochar amendment caused significant improvements in plant water status and plant ion(K^+,Mg^2+,and Ca^2+)contents,leading to an increase in net photosynthesis and a higher energy-use efficiency of photosystem ***-treated plants had lower oxidative stress,increased water-use efficiency,and decreased soil respiration,and the biochar-compost mixture resulted in even greater improvements in growth,leaf turgor potential,photosynthesis,nutrient content,and soil gas *** results suggest that biochar and compost promote plant growth with respect to nutrient uptake,water balance,and photosynthetic system *** summary,both the soil amendments studied could increase opportunities for *** to sequester CO2 and produce more fodder bio-active compounds and biomass for bio-energy on nutrient-poor degraded soils.

关键词： bio-energy crop chlorophyll fluorescence degraded soil plant eco-physiology plant growth photochemical efficiency water status

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Traditional ethno-botanical uses of medicinal plants from coastal areas of Pakistan

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Journal of Coastal Life Medicine 2014年第1期 22-30页

作者： Muhammad Qasim zainul abideen Muhammad Yousuf Adnan Raziuddin Ansari Bilquees Gul Muhammad Ajmal Khan Institute of Sustainable Halophyte Utilization University of Karachi-75270KarachiPakistan Qatar Shell Professorial Chair of Sustainable Development Department of International AffairsCollege of Arts and SciencesQatar UniversityPO Box 2713DohaQatar

Objective:To document the traditional uses of wild plants as medicine by the villagers along the coastal highway from Karachi to ***:Information presented in this research was gathered from the local people using an integrated approach of floral collections,discussions with the elderly people and traditional medicinal practitioners using semi-structured ***:27 families in the targeted *** of the plants(54%)from this coastal plant diversity were xerophytes followed by halophytes/xero-halophytes(40%)and glycophytes(6%).The most important uses included gastrointestinal diseases,pain killer,arthritis,skin and sexual disorders,asthma and *** above-ground parts of plants ***,stem and fruit/seed as decoction are used most commonly to cure 23 ailments but root was also used in some ***:Ethno-medicinal surveys indicated the medicinal importance of 54 plant species from phyto-medicinal claim and it is hoped that it will lead to detailed chemical and pharmacological *** may also lead to a discovery of novel bioactive compounds for food and pharmaceutical *** study helps in documenting therapeutic uses of herbal remedies with new *** sc lmaiamy aanldso i tl iesa hdo tpoe da tdhiastc iot vweirlyl loeaf dn otov edle tbaiioleadc tcihveem ciocmalp aonudn pdhs afromr afcoooldog aicnadl pharmaceutical industries.

关键词： Arabian Sea Halophytes Herbal medicine Karachi Salt tolerant Uthal

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