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Divergent consequences of bio-resources on morphological plasticity and biochemical responses in early-stage leguminous species:Sustainable productivity approaches

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Geoscience Frontiers 2024年第3期15卷 312-321页

作者： Taimoor Hassan Farooq Muhammad Farrakh Nawaz Muhammad Qasid awais shakoor Irfan Ahmad Sadaf Gul Khuram Shahzad Xiaoyong Chen Bangor College China A Joint Unit of Bangor University and Central South University of Forestry and TechnologyChangsha 410004China Institute of Environmental Studies University of KarachiKarachi 75270Pakistan Department of Forestry and Range Management University of Agriculture FaisalabadPakistan Hawkesbury Institute for the Environment Western Sydney UniversityPenrithNSW 2751Australia Department of Botany University of KarachiKarachi 75270Pakistan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesChaoyang DistrictBeijing 100101China College of Arts and Sciences Governors State UniversityUniversity ParkIL 60484USA

Inorganic resources can be detrimental to the environment when *** comparison,organic resources help balance the soil’s carbon and nitrogen(C/N)ratio,enhance soil fertility and benefit ecological *** climate crises,rapid urbanization,and fast population growth are causing many natural forests to be converted to agricultural and industrial lands to fulfill ever-increasing food and developmental *** of different bio-resources becomes necessary for sustainable productivity of available *** study explores the effects of various organic amendments on the growth,morpho-physiological and biochemical attributes of three leguminous tree species:Dalbergia sissoo,Vachellia nilotica,and Acacia ampliceps,concerning sustainable ***-year-old healthy,disease-free,and homogenous seedlings were used as study material in a greenhouse pot *** organic amendments,i.e.,compost(CMP),cow dung(CD),poultry manure(PM),and biochar(BC),along with a control(CK)treatment,were *** showed that all the organic amendments performed significantly better(P<0.05)than *** produced the most significant results,followed by BC application,while PM influence was the *** all treatments and species,the maximum values of root length,root biomass,chlorophyll content,carotenoids,catalase,and total phenolic content were recorded under the CD *** for plant height and collar diameter,no big differences were observed between CD and BC(P=0.054).While comparing species,*** growth was significantly enhanced under organic amendments,followed by *** and comparative results of studied parameters conclude that CD and BC were the most effective organic amendments,which greatly improved the growth of experimental leguminous tree species;this makes these two biofertilizers a powerful tool for sustainable agricultural *** study contributes toward an enhanced understanding of plant’

关键词： Bio-fertilizers Crop productivity Ecological sustainability Nitrogen fixation Organic cultivation Physiological responses

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Morpho-anatomical adaptations of dominantly grown wild Datura inoxia to wastewater resource:Productivity and ecological issues

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Geoscience Frontiers 2024年第3期15卷 248-258页

作者： Taimoor Hassan Farooq Shagufta Jabeen awais shakoor Muhammad Saleem Arif Nadia Siddique Khuram Shahzad Muhammad Umair Riaz Yong Li Bangor College China a Joint Unit of Bangor University and Central South University of Forestry and TechnologyChangsha 410004HunanChina Department of Botany The Islamia University of BahawalpurBahawalpur 63100Pakistan Hawkesbury Institute for the Environment Western Sydney UniversityPenrithNSW 2751Australia Department of Environmental Sciences Government College University FaisalabadFaisalabad 38000Pakistan Department of Forestry Rangeand Wildlife ManagementThe Islamia University of BahawalpurBahawalpur 63100Pakistan Institute of Geographic Sciences and Natural Resources Research Chinese Academy of SciencesBeijing 100101China National Engineering Laboratory for Applied Technology of Forestry and Ecology in South China Central South University of Forestry and TechnologyChangsha 410004HunanChina

With the increasing global water scarcity,wastewater irrigation has become widespread,but it can have detrimental ecological *** wastewater contains valuable nutrients for plants,improper treatment or the use of untreated wastewater in irrigation can negatively impact soil fertility and plant *** study is divided into two parts:firstly,a phytosociological survey was conducted to identify plant species with the highest importance value index(IVI)in the vicinity of wastewaterirrigated ***,a comparative morpho-anatomical analysis was carried out to investigate the morpho-anatomical adaptations of the species with the highest IVI under wastewater irrigation compared to normal water *** results of the phytosociological survey revealed the presence of 51 plant species in the vicinity of the wastewater-irrigated areas,with varying relative densities and *** inoxia exhibited the highest IVI(28.79),followed by Xanthium strumarium(24.34),while Lippia nodiflora showed the lowest IVI(1.86).The morphological growth of *** was superior under normal water irrigation,but the average root length was greater under wastewater *** cell anatomy,cell thickness and cell area characteristics in the dermal,ground,and vascular tissues of the stem and root tended to be greater under wastewater ***,the opposite trend was observed in leaf anatomical analysis,possibly due to the combined effect of wastewater and climatic *** and root xylem thickness were greater under wastewater irrigation,whereas phloem thickness was higher under normal water *** number of vascular bundles in the stem,root,and leaf was higher under wastewater treatment compared to normal water irrigation,but their arrangement was circular in the latter and scattered under wastewater *** inoxia demonstrated strong adaptive potential under wastewater irrigation,as indicated by its highest relative d

关键词： Water pollution Phytosociology Structural growth Phytoremediation Agricultural irrigation Ecological concerns

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Soil mineral nitrogen dynamics in fallow periods in a rainfed semiarid Mediterranean agricultural system

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Pedosphere 2023年第4期33卷 622-637页

作者： awais shakoor Àngela D.BOSCH-SERRA Antonio LIDON Damián GINESTAR Jaime BOIXADERA University of Lleida Department of Environment and Soil SciencesAvda.Alcalde Rovira Roure 191Lleida E-25198(Spain) Institute of Water and Environmental Engineering Universitat Politècnica de ValènciaCamino de Vera s/n.Valencia E-46022(Spain) Institute for Multidisciplinary Mathematics Universitat Politècnica de ValènciaCamino de Vera s/n.Valencia E-46022(Spain) Department of Agriculture LivestockFisheries and FoodGovernment of CataloniaAvda.Alcalde Rovira Roure 191Lleida E-25198(Spain)

Rainfed agricultural systems in semiarid Mediterranean environments are subject to erratic but often heavy rainfall *** an agronomic practice,fallow periods can be included even within the existing European Union common policy for crop *** study aimed to quantify the effects of previous mineral fertilization on soil mineral nitrogen(N_(min))content and potential nitrate leaching during no-till fallow periods of crop *** Leaching Estimation and Chemistry Model(LEACHM)was used for soil N_(min)prediction after *** fallow periods,N_(min)measured in the soil profile increased by an average of 125 kg N ha^(-1),whereas the model showed an average increase of 95 kg N ha^(-1).The amount of nitrogen(N)leached was estimated to be 11–38 kg N ha^(-1).The N balance simulated using LEACHM might differ from the actual *** calibrated LEACHM underestimated soil N_(min)after a drought period followed by soil water replenishment,probably due to a pulse in soil C and N mineralization caused by the wetting of dry soil,but overestimated soil N_(min)after occasional rainy spells when soil quickly became saturated,probably due to occasional nitrous oxide emissions not being fully accounted for by the model and specific preferential water flow,which might lead to greater nitrate leaching than that simulated by LEACHM using the convection-dispersion *** results show that soil N_(min)measurements after fallow periods cannot be well predicted by *** findings of this study provide a support for fertilization planning for crop rotation systems including a fallow period to avoid overfertilization in the following cropping season and reduce N environmental impacts.

关键词： crop rotation Latin Hypercube-One factor at a Time(LH-OAT)method Leaching Estimation and Chemistry Model(LEACHM) mineral fertilizer nitrogen balance nitrogen environmental impacts nitrogen leaching soil water

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Highly efficient Uranium(Ⅵ) capture from aqueous solution by means of a hydroxyapatite-biochar nanocomposite: Adsorption behavior and mechanism

Highly efficient Uranium(Ⅵ) capture from aqueous solution b...

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第十一届重金属污染防治技术及风险评价研讨会

作者： Waqas Ahmed Avelino Nú?ez-Delgado Sajid Mehmood Sehrish Ali Muhammad Qaswar awais shakoor Di-Yun Chen Guangdong Provincial Key Laboratory for Radionuclides Pollution Control and Resources School of Environmental Science and Engineering Guangzhou University School of Civil Engineering Guangzhou University Department of Soil Science and Agricultural Chemistry Engineering Polytechnic School Universidade de Santiago de Compostela College of Ecology and Environment Hainan University National Engineering Laboratory for Improving Quality of Arable Land Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Key Laboratory of Industrial Ecology and Environmental Engineering School of Environmental Science and Technology Dalian University of Technology Department of Environment and Soil Sciences University of Lleida

The exploration and rational design of easily separable and highly efficient sorbents with the sufficient capability of retaining radioactive and toxic uranium U(VI) is *** this study,a hydroxyapatite (HAP) biochar nanocomposite (BR/HAP) was successfully fabricated from rice straw biochar (BR),to be used as a new and efficient adsorbent for removing U(VI) from aqueous *** BR and the BR/HAP composite were characterized via Brunauer-Emmett-Teller (BET),scanning electron microscopy (SEM),energy dispersive spectroscopy (EDS),transmission electron microscopy (TEM),X-ray diffraction (XRD),Fourier transform infrared spectroscopy(FTIR) and X-ray photo electron spectroscopy (XPS) *** test results showed that BR/HAP exhibited remarkably higher adsorption capacity than the raw BR.A pseudo-second order kinetic model thoroughly explained the adsorption kinetics,providing the maximum U(VI) adsorption capacities (q) of 110.56 mg g (R=0.98) and428.25 mg g (R=0.99),for BR and BR/HAP,respectively,which was indicative of the rate-limited sorption via diffusion or surface complexation after rapid initial adsorption *** Langmuir isotherm model fitted the experimental data to accurately simulate the adsorption of U(VI) onto BR and BR/HAP (R=0.97 and R=0.99).The thermodynamic results showed negative values forΔGo,clearly indicating that the reaction was spontaneous,as well as positive values forΔHo(11.04 kJ mol and 28.86 kJ mol,respectively) andΔSo(88.97 kJ molK,and 183.42 kJ mol K),making clear the endothermic nature of U(VI) adsorption onto both sorbents,with an increase in randomness at a molecular *** spectroscopy and XPS spectrum further confirmed that the primary mechanisms were ion exchange with UOand surface complexion by-OH and-COOH,and phosphate groups notably were conducive to the excellent sorption capability of BR/HAP towards *** addition,BR/HAP showed an excellent reusability,after five adsorption-desorption experiments,the

关键词： Adsorption Biochar Hydroxyapatite Nanocomposite Uranium Wastewater treatment

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农田土壤中氮的环境指标研究

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中国农学通报 2017年第7期33卷 142-147页

作者：田艳马友华胡宏祥吴蔚君徐云连赵学敏龚娟 awais shakoor 安徽农业大学资源与环境学院合肥230036

氮肥的大量不合理施用使农田氮素成了农业面源污染的重要因子,然而关于农田氮素对环境污染的标准并没有系统的介绍。笔者分别从农田土壤氮素盈余、农田径流总氮、铵态氮、硝态氮等方面着手,介绍农田土壤中氮对环境产生的影响。土壤中氮... 详细信息

氮肥的大量不合理施用使农田氮素成了农业面源污染的重要因子,然而关于农田氮素对环境污染的标准并没有系统的介绍。笔者分别从农田土壤氮素盈余、农田径流总氮、铵态氮、硝态氮等方面着手,介绍农田土壤中氮对环境产生的影响。土壤中氮素富集会加大农田土壤氮流失至水体的风险和数量。农田生态系统中氮素通过氨挥发、地表径流、下渗淋失等进入到环境,其盈余主要以气态、可溶态等形态对环境造成污染。综述国内外相关研究得到:农田径流损失的氮以可溶态为主,其中水稻田面水氮浓度超过30 mg/L会促使土壤矿质态氮部分释放,增加土壤溶液中矿质态氮含量,增加农田土壤氮流失风险;土壤无机N含量达到60 mg/kg时能满足作物的正常生长,超过此值,N素流失风险增加,多余的土壤NO3-N将会引起较大的环境风险。化肥使用量控制在150~180 kg/(hm^2·a)之内,可以有效控制化肥氮的损失污染。土壤氮素盈余、农田径流总氮、铵态氮、硝态氮等可作为农田土壤中氮的环境指标。

关键词：农田土壤氮环境指标氮素盈余总氮铵态氮硝态氮

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