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Fine-scale spatial distribution of soil organic carbon and its fractions after afforestation with Pinus sylvestris and Salix psammophila in a semiarid desert of China

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Journal of Plant Ecology 2022年第1期15卷 141-154页

作者： Zhilong Lan Shaolei Zhang tanveer ali sial Luyao Wu Wenqian Chang Xiong Li Jianguo Zhang Jinglong Fan Ministry of Agriculture Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China College of Natural Resources and EnvironmentNorthwest A&F UniversityYangling 712100China State Key Laboratory of Soil Erosion and Dryland Farming on the Loess Plateau Northwest A&F UniversityYangling 712100China Taklimakan Desert Research Station Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesKorla 841000China

Afforestation is helpful to improve soil functions and increase soil organic carbon(SOC)sequestration in semiarid ***,the fine-scale(around a single plant)spatial distribution of SOC and its liable organic carbon(LOC)fractions after afforestation in semiarid deserts are poorly *** sylvestris and Salix psammophila afforested on shifting sandy land(Sland)were selected to quantify fine-scale(at 20,80,150 and 240 cm away from the trees)spatial distribution of SOC and its LOC fractions in the southeast edge of Mu Us Desert,*** results showed that the afforested *** and *** significantly increased SOC,total nitrogen,dissolved organic carbon,microbial biomass carbon and readily oxidized organic carbon(ROOC).At 20 cm distance,SOC storage of *** was 27.21%higher than *** in 0-100 cm soil layers,and SOC storage of *** at 80 and 150 cm distances was 5.50%and 5.66%higher than ***,*** with Sland,SOC storage under *** and *** significantly increased by 94.90%,39.50%,27.10%and 18.50%at 20,80,150 and 240 cm distance,*** accounted for 14.09%and 18.93%of SOC under *** and ***,*** results suggest that afforestation can promote SOC accumulation at different distances from the plants,and that *** allocates more organic matter to the closer soil compared with ***(<80 cm from the tree).

关键词： afforestation soil organic carbon liable organic carbon Mu Us Desert fine-scale spatial distribution

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Variations of soil organic carbon fractions in response to conservative vegetation successions on the Loess Plateau of China

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International Soil and Water Conservation Research 2023年第3期11卷 561-571页

作者： Muhammad Imran Ghani Jing Wang Peng Li Shamina Imran Pathan tanveer ali sial Rahul Datta ali Mokhtar Esmat F.ali Jörg Rinklebe Sabry MShaheen Mengyun Liu Hamada Abdelrahman College of Natural Resources and Environment Northwest A&F UniversityYangling Shaanxi712100China Scientific Laboratory of Heyang Agricultural Environment and Farmland Cultivation Ministry of Agriculture and Rural AffairsNorthwest A&F UniversityHeyang Shaanxi714000China Dipartimento di Scienze e Tecnologie Agrarie AlimentariAmbientali e ForestaliUniversita degli Studi di FirenzePiazzale delle Cascine 2850144FlorenceItaly Department of Soil Science Sindh Agriculture University TandojamSindh70060Pakistan Department of Geology and Pedology Faculty of Forestry and Wood TechnologyMendel University in BrnoZemedelska 361300BrnoCzech Republic Cairo University Faculty of AgricultureDepartment of Agricultural EngineeringGizaEgypt Department of Biology College of ScienceTaif UniversityP.O.Box 11099Taif21944Saudi Arabia University of Wuppertal School of Architecture and Civil EngineeringInstitute of Foundation EngineeringWater-and Waste-ManagementLaboratory of Soil-and Groundwater-ManagementPauluskirchstraβe 742285WuppertalGermany International Research Centre of Nanotechnology for Himalayan Sustainability(IRCNHS) Shoolini UniversitySolan173212 Himachal PradeshIndia King Abdulaziz University Faculty of MeteorologyEnvironmentand Arid Land AgricultureDepartment of Arid Land Agriculture21589JeddahSaudi Arabia University of Kafrelsheikh Faculty of AgricultureDepartment of Soil and Water Sciences33516Kafr El-SheikhEgypt Cairo University Faculty of AgricultureSoil Science DepartmentGiza12613Egypt

Land use changes profoundly affect the equilibrium of soil organic carbon(soC)sequestration and greenhouse gas *** the current global climatic changes,it is vital to understand the influence of ecological restoration and conservation management on the dynamics of soC under different land uses,especially in erosion-endangered Loess ***,we investigated changes in soc through a suit of labile fractions,namely:light fraction organic C(LFOC),heavy fraction organic C(HFOC),coarse particulate organic C(CPOC),fine particulate organic C(FPOC),and dissolved organic C(DOC),from two forests i.e.,Robinia pseudoacacia(RP)and Platycladus orientalis(PO),with different ages,in comparison with farmland(FL).The SOC and STN contents significantly increased over 42 years in the RP forest where the contents of CPOC and FPOC were significantly higher than in the ***,total SOC and its labile fractions,in the studied land use types,significantly correlated with soil CacO3,pH,and STN contents,indicating their key roles in SoC *** results reported here from different vegetation with different ages provide a better understanding of sOC and STN alterations at different stages of vegetation *** findings suggest that long-term natural vegetation restoration could be an effective approach for SoC sequestration and soil conservation on the Loess soil.

关键词： Vegetation restoration Organic carboncontent Labile organic carbon Carbonate Soil conservation

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Use of Biochar as an Amendment for Remediation of Heavy Metal-Contaminated Soils:Prospects and Challenges

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Pedosphere 2017年第6期27卷 991-1014页

作者： Altaf Hussain LAHORI GUO Zhanyu ZHANG Zengqiang LI Ronghua Amanullah MAHAR Mukesh Kumar AWASTHI SHEN Feng tanveer ali sial Farhana KUMBHAR WANG Ping JIANG Shuncheng College of Natural Resources and Environment Northwest A&F UniversityYangling 712100(China) Centre for Environmental Sciences University of SindhJamshoro 76080(Pakistan) Department of Biotechnology Amicable Knowledge Solution UniversitySatna 485001(India) College of Agronomy Northwest A&F UniversityYangling 712100(China)

Biochar(BC), known as the new black gold, is a stable, novel carbonaceous by-product that is synthesized through pyrolysis of biological materials in the absence of O_***, an emerging interest in the application of BC as a robust soil amendment has given rise to a broad research area in science and *** is considered a promising remediation option for heavy metal(HM)-contaminated soils to reduce HM bioavailability to *** efficacy of BC depends on the porosity, composition,pyrolysis temperature, feedstock, and residence time of *** review article aimed to present an overview of BC use in the immobilization of HMs, i.e., Cd, As, Pb, Zn, Ni, Cu, Mn, Cr, and Sb, in contaminated *** remaining uncertain factors, including the specific soil HM immobilization mechanisms, long-term beneficial effects, and potential environmental risks associated with BC application are *** research must be conducted to ensure that the management of environmental pollution is in accord with ecological sustainability and adaptation of the black gold biotechnology on a commercial basis for immobilization of HMs in contaminated soils.

关键词： additives environmental pollution feedstock immobilization pyrolysis temperature remediation efficacy

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25年长期定位不同施肥措施对关中塿土水力学性质的影响

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农业工程学报 2018年第24期34卷 100-106页

作者：兰志龙 Muhammad Numan Khan tanveer ali sial 杨学云赵英张建国西北农林科技大学资源环境学院/农业部西北植物营养与农业环境重点实验室杨凌712100 鲁东大学资源与环境工程学院烟台264025

土壤水力学性质和功能的变化是评价长期施肥是否维持土壤可持续健康发展的重要方面。该研究通过采取"国家黄土肥力与肥料效益监测基地"的表层原状土壤,分析测定了撂荒(LH)、休闲(XX)、不施肥(CK)、单施氮肥(N)、氮磷钾肥(NPK)和有机肥... 详细信息

土壤水力学性质和功能的变化是评价长期施肥是否维持土壤可持续健康发展的重要方面。该研究通过采取"国家黄土肥力与肥料效益监测基地"的表层原状土壤,分析测定了撂荒(LH)、休闲(XX)、不施肥(CK)、单施氮肥(N)、氮磷钾肥(NPK)和有机肥与氮磷钾肥配施(MNPK)6个处理的土壤水分特征曲线、饱和导水率和紧实度等指标,评价了长期定位施肥对土壤基本物理性质和水力学性质的影响。结果表明:1)与CK、N和NPK处理相比,MNPK处理显著提高了土壤有机碳、饱和导水率和孔隙度,而降低了土壤容重和紧实度(P9μm大孔隙范围内,其次是<0.2μm小孔隙范围,0.2～9μm之间的中孔隙分布较少。综上,MNPK有助于改善土壤结构,提高土壤持水性,降低土壤容重和紧实度,有助于作物生长和高产,是关中地区较为适宜的施肥措施。

关键词：土壤水力学水分特征曲线饱和导水率土壤紧实度塿土

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陕北黄土丘陵区不同土地利用方式下土壤碳剖面分布特征

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环境科学 2018年第1期39卷 339-347页

作者：兰志龙赵英张建国李会杰司炳成焦瑞 Muhammad Numan Khan tanveer ali sial 西北农林科技大学资源环境学院农业部西北植物营养与农业环境重点实验室杨凌712100 西北农林科技大学水利与建筑工程学院杨凌712100

黄土高原土层深厚,土壤剖面碳存储受土地利用方式影响明显.为探讨不同土地利用方式对深层土壤碳分布的影响,研究了人工经济林地(陕北米脂)、退耕还林地(神木)和防风固沙林地(榆林榆阳区)0~20.0 m土壤有机碳(SOC)和无机碳(SIC)的分布特... 详细信息

黄土高原土层深厚,土壤剖面碳存储受土地利用方式影响明显.为探讨不同土地利用方式对深层土壤碳分布的影响,研究了人工经济林地(陕北米脂)、退耕还林地(神木)和防风固沙林地(榆林榆阳区)0~20.0 m土壤有机碳(SOC)和无机碳(SIC)的分布特征和差异.结果表明,在不同土地利用方式下SOC含量:矮化枣树(2.00 g·kg^(-1))>未矮化枣树(1.54 g·kg^(-1))>柠条林(0.97 g·kg^(-1))>退化人工草地(0.81 g·kg^(-1))>樟子松林(0.70 g·kg^(-1))>荒草地(0.45 g·kg^(-1)),且各剖面之间SOC含量存在显著性差异(P柠条林(9.62 g·kg^(-1))>退化人工草地(8.07 g·kg^(-1))>樟子松林(4.32 g·kg^(-1))>荒草地(0.47 g·kg^(-1));人工经济林和退耕还林(草)样地内所有土壤剖面之间SIC含量无显著性差异;人工经济林、退耕还林(草)剖面和防风固沙林地剖面SIC含量存在显著性差异(P<0.05).矮化枣树、未矮化枣树、柠条林、退化人工草地、樟子松林和荒草地土壤剖面无机碳密度分别是有机碳密度的6.19、7.71、10.80、10.78、5.91和1.03倍.综上可见,不同土地利用方式之间土壤碳储量存在明显差异,无机碳的含量远高于有机碳.

关键词：土地利用方式土壤有机碳土壤无机碳碳密度黄土高原

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Reinforcement Learning-Based Optimization for Drone Mobility in 5G and Beyond Ultra-Dense Networks

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Computers, Materials & Continua 2021年第9期68卷 3807-3823页

作者： Jawad tanveer Amir Haider Rashid ali Ajung Kim School of Optical Engineering Sejong UniversitySeoul05006Korea School of Intelligent Mechatronics Engineering Sejong UniversitySeoul05006Korea

Drone applications in 5th generation(5G)networks mainly focus on services and use cases such as providing connectivity during crowded events,human-instigated disasters,unmanned aerial vehicle traffic management,internet of things in the sky,and situation awareness.4G and 5G cellular networks face various challenges to ensure dynamic control and safe mobility of the drone when it is tasked with delivering these *** drone can fly in three-dimensional *** drone connectivity can suffer from increased handover cost due to several reasons,including variations in the received signal strength indicator,co-channel interference offered to the drone by neighboring cells,and abrupt drop in lobe edge signals due to antenna *** baseline greedy handover algorithm only ensures the strongest connection between the drone and small cells so that the drone may experience several *** for fast environment learning,machine learning techniques such as Q-learning help the drone fly with minimum handover cost along with robust *** this study,we propose a Q-learning-based approach evaluated in three different *** handover decision is optimized gradually using Q-learning to provide efficient mobility support with high data rate in time-sensitive applications,tactile internet,and haptics *** results demonstrate that the proposed algorithm can effectively minimize the handover cost in a learning *** work presents a notable contribution to determine the optimal route of drones for researchers who are exploring UAV use cases in cellular networks where a large testing site comprised of several cells with multiple UAVs is under consideration.

关键词： 5G dense network small cells mobility management reinforcement learning performance evaluation handover management

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Metric Identification of Vertices in Polygonal Cacti

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Computer Modeling in Engineering & Sciences 2023年第7期136卷 883-899页

作者： Xiujun Zhang Muhammad Salman Anam Rani Rashna tanveer Usman ali Zehui Shao School of Computer Science Chengdu UniversityChengduChina Department of Mathematics The Islamia University of BahawalpurBahawalpurPakistan Centre for Advanced Studies in Pure and Applied Mathematics Bahauddin Zakariya UniversityMultanPakistan Institute for Intelligent Information Processing South China Business College of Guangdong University of Foreign StudiesGuangzhouChina

The distance between two vertices u and v in a connected graph G is the number of edges lying in a shortest path(geodesic)between them.A vertex x of G performs the metric identification for a pair(u,v)of vertices in G if and only if the equality between the distances of u and v with x implies that u=v(That is,the distance between u and x is different from the distance between v and x).The minimum number of vertices performing the metric identification for every pair of vertices in G defines themetric dimension of *** this paper,we performthemetric identification of vertices in two types of polygonal cacti:chain polygonal cactus and star polygonal cactus.

关键词： Metric metric identification metric generator metric dimension cactus graph

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Structural and optical properties of Zn1-xNixTe thin films prepared by electron beam evaporation technique

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Progress in Natural Science:Materials International 2015年第1期25卷 22-28页

作者： Arshad Mahmood R. Rashid U. Aziz A. Shah Zahid ali Qaiser Raza tanveer Ashraf Nano Devices Laboratories National Institute of Lasers and Optronics (NILOP) P.O. Nilore Islamabad Pakistan

Zn1-xNixTe thin films with different composition(x=0.0, 0.05, 0.10, 0.15 and 0.20) were deposited on glass substrate by electron beam evaporation technique followed by its characterization using advanced structural and optical analysis techniques. Structural properties of the prepared thin films were studied by X-ray diffraction(XRD). The XRD patterns revealed that the binary compounds transformed into a ternary compound with cubic structure having preferred orientation along the c-direction with(111) planes. Composition analysis of the films was determined by energy dispersive analysis of X-rays(EDAX) and found to be in agreement with the precursor composition. Optical properties such as extinction coefficient(k) and band gap energy of these films were examined by using a spectroscopic ellipsometer. It was found that the extinction coefficient(k) increased with the addition of Ni content in the alloy. In comparison, the band gap energy was also determined by using transmission spectra and found to be agreed with that of the ellipsometric results. These analyses confirm that the band gap energy decreases with the increase of Ni content in the alloy.

关键词： E-beam evaporation Solar cells,Zn1-xNixTe Ellipsometry Extinction coefficient Band gap energy

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Current scenario and potential of biodiesel production from waste cooking oil in Pakistan: An overview

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Chinese Journal of Chemical Engineering 2019年第10期27卷 2238-2250页

作者： Haris Mahmood Khan Chaudhry Haider ali tanveer Iqbal Saima Yasin Muhammad Sulaiman Hamayoun Mahmood Muhammad Raashid Mohsin Pasha BozhongMu Department of Chemical Polymer and Composite Materials EngineeringUniversity of Engineering&TechnologyKSK CampusLahore 54890Pakistan East China University of Science and Technology Shanghai 200237China

Biodiesel utilization has been rapidly growing worldwide as the prime alternative to petrodiesel due to a global rise in diesel fuel demand along with hazardous emissions during its thermochemical ***,several debatable issues including feedstock availability and price,fuel and food competition,changes in land use and greenhouse gas emission have been raised by using edible as well as inedible feedstocks for the production of ***,non-crop feedstocks could be a promising *** this article,waste cooking oils have been recommended as a suitable option for biodiesel production bearing in mind the current national *** important factors such as the quantity of waste cooking oil produced,crude oil and vegetable oil import expenses,high-speed diesel imports,waste management issues and environmental hazards are ***,process simulation and operating cost evaluation of an acid catalyzed biodiesel production unit are also *** simulation results show that the production cost of waste cooking oil-based biodiesel is about 0.66 USD·*** believe that the present overview would open new pathways and ideas for the development of biofuels from waste to energy approach in Pakistan.

关键词： Biodiesel Waste cooking oil Feedstock sustainability Energy demand Pakistan

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Evaluation of cotton germplasm for morphological and biochemical host plant UPdates resistance traits against sucking insect pests complex

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Journal of Cotton Research 2021年第3期4卷 211-218页

作者： RIZWAN Muhammad ABRO Saifullah ASIF Muhammad Usman HAMEED Amjad MAH BOOB Wajid DEHO Zaheer Ahmed sial Mahboob ali Nuclear Institute of Agriculture(NIA) TandojamSindh 70060Pakistan Nuclear Institute for Agriculture and Biology(NIAB) Faisalabad 38000Pakistan College of Plant Science and Technology Huazhong Agricultural UniversityWuhan 430070China

Background:Sucking insect pests cause severe damage to cotton crop *** development of insect resistant cotton cultivars is one of the most effective measures in curtailing the yield *** the role of morphological and biochemical host plant resista nee(HPR)traits in plant defense,12 cotton genotypes/varieties were evaluated for leaf area,leaf glanding,total soluble sugars,total soluble proteins,total phenolics,tannin and total flavonoids against fluctuating populations of whitefly,thrips and jassid under field ***:The population of these insects fluctuated during the growing seas on and remained above threshold level(whitefly>5,thrips>(8-10)f or jassid>1 per leaf)during late June and early *** and negative association of whitefly(r=-0.825)and jassid(r=-0.929)with seed cotton yield was *** population of insects were the highest in Glandless-1 followed by NIA-82 and ***-Kiran followed by NI AB-878 and Sadori were the most resistant,with the mean population of 1.41,1.60,1.66(whitefly);2.24,232,2.53(thrips)and 037,0.31,036(jassid),*** resistant variety NIAB-Kiran showed less soluble sugars(8.54 mg.g^(-1)),soluble proteins(27.11 mg.g^(-1))and more phenolic(36.56 mg.g^(-1))and flavonoids(13.10mg.g^(-1))as compared with the susceptible check ***,all insect populations were positively correlated with total soluble sugars and *** populations exhibited negative response to leaf gossypol glands,total phenolics,tannins and *** thrips and jassid populations had a significant and negative correlation with these four biochemical HPR ***:The ide ntified resistant resources and HPR traits can be deployed against sucking in sect pests'complex in future breeding programs of developing insect resistant cotton varieties.

关键词： Gossypium Insect resistance Plant defense Plant breeding Resistant traits Sucking in sects

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