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| 1 | 浙江天童常绿阔叶林不同演替阶段地表凋落物的C:N:P化学计量特征显示文摘地表凋落物在森林物质循环中起着重要作用,但是目前缺乏对其不同分解层次中碳(C)、氮(N)、磷(P)演替动态的研究。该文以浙江天童常绿阔叶林为研究对象,用空间代替时间序列的方法,通过测定5个演替阶段地表凋落物不同分解层次的凋落物量、有机碳库和氮磷养分库的储量及C:N:P化学计量特征,探讨地表凋落物特征的演替动态。结果表明:1)随着演替的进行,地表凋落物量和有机碳储量呈现下降的趋势。2)在各演替阶段,有机碳含量在各分解层表现出未分解层(L)>半分解层(F)>已分解层(Y)的趋势;有机碳储量均表现为YF>L,且各层氮含量随着演替的进行均趋于升高。4)磷含量在演替中期群落最低,各演替阶段不同分解层的磷含量皆表现为Y>F>L。磷储量的演替趋势不明显。L层磷储量随着演替进行趋于降低。5)随着演替进行,凋落物C:N、C:P和N:P皆趋于下降(p<0.05)。在各分解层之间,C:N和C:P皆表现为Y | 马文济 赵延涛 张晴晴 Ali ARSHAD 史青茹 阎恩荣 | 2014 | 植物生态学报2014，38，8： | 50 |
| 2 | Crosstalk of liver immune cells and cell death mechanisms in different murine models of liver injury and its clinical relevance显示文摘BACKGROUND: Liver inflammation or hepatitis is a result of pluripotent interactions of cell death molecules, cytokines, chemokines and the resident immune cells collectively called as microenvironment. The interplay of these inflammatory mediators and switching of immune responses during hepatotoxic, viral, drug-induced and immune cell-mediated hepatitis decide the fate of liver pathology. The present review aimed to describe the mechanisms of liver injury, its relevance to human liver pathology and insights for the future therapeutic interventions.DATA SOURCES: The data of mouse hepatic models and relevant human liver diseases presented in this review are systematically collected from Pub Med, Science Direct and the Web of Science databases published in English. RESULTS: The hepatotoxic liver injury in mice induced by the metabolites of CCl4, acetaminophen or alcohol represent necrotic cell death with activation of cytochrome pathway, formation of reactive oxygen species(ROS) and mitochondrial damage. The Fas or TNF-α induced apoptotic liver injury was dependent on activation of caspases, release of cytochrome c and apoptosome formation. The Con A-hepatitis demonstrated the involvement of TRAIL-dependent necrotic/necroptotic cell death with activation of RIPK1/3. The α-Gal Cer-induced liver injury was mediated by TNF-α. The LPS-induced hepatitis involved TNF-α, Fas/Fas L, and perforin/granzyme cell death pathways. The MHV3 or Poly(I:C) induced liver injury was mediated by natural killer cells and TNF-α signaling. The necrotic ischemia-reperfusion liver injury was mediated byhypoxia, ROS, and pro-inflammatory cytokines; however, necroptotic cell death was found in partial hepatectomy. The crucial role of immune cells and cell death mediators in viral hepatitis(HBV, HCV), drug-induced liver injury, non-alcoholic fatty liver disease and alcoholic liver disease in human were discussed.CONCLUSIONS: The mouse animal models of hepatitis provide a parallel approach for the study of human liver pathology. Blocking or stimulating the pathways associated with liver cell death could unveil the novel therapeutic strategies in the management of liver diseases. | Hilal Ahmad Khan Muhammad Zishan Ahmad Junaid Ali Khan Muhammad Imran Arshad | 2017 | Hepatobiliary & Pancreatic Diseases International2017，16，3： | 24 |
| 3 | 浙江天童常绿阔叶林演替阶段共有种的树木构型显示文摘树木构型是木本植物为响应光照变化在其空间建造结构上的配置模式和形态体现。研究演替不同阶段共有种构型的变化可以剔除植物谱系的影响,反映植物构型特征与光资源供给性的关系。该研究在浙江宁波天童、南山和北仑3个次生演替序列上选择了5个演替共有种,分4个群落高度层级,对照分析了树高、冠幅深度和面积、枝条伸展方向、基径、叶片盖度和聚集度构型性状随演替的变化,并分析了与冠幅曝光指数的线性关系。结果表明:1)随着演替进行,冠幅厚度和面积、叶片盖度、叶片聚集度和基径逐步增加,但在个别相邻演替阶段增加不显著;2)随着演替进行,植物的垂直枝比例降低,水平枝比例增加;3)演替过程中植物冠幅曝光指数在各层级内都呈现出减小趋势;4)构型性状和植物冠幅曝光指数间存在显著的线性回归关系(p<0.001)。总之,随着常绿阔叶林演替进行,演替共有种构型的变化反映了物种功能类群由阳性先锋植物向耐阴植物的转化,其中,植物对光资源的适应是导致构型变化的主要原因。 | 杨晓东 Ali ARSHAD | 2013 | 植物生态学报2013，37，7： | 17 |
| 4 | 浙江天童木本植物叶片性状空间变异的地统计学分析显示文摘探究叶片性状的空间变异性和环境关联性有助于我们理解植物对环境的适应策略和群落建构机制。该研究以浙江天童5 hm2大型动态样地所有胸径≥1 cm的木本植物为对象,测定了20 253株个体的单叶面积、比叶面积和叶片干物质含量,土壤总氮、总磷、总碳、p H值、体积含水率、容重和腐殖质,以及海拔、坡度和凹凸度等;并用地统计学等方法分析了叶片性状的空间变异性及其与环境因子的相关性。结果表明:1)单叶面积的空间变异最大,比叶面积次之,叶片干物质含量最小。三者在0–5.16 m空间范围内表现出较弱的空间自相关,其半变异函数的最优模型分别为高斯模型、指数模型和指数模型。2)叶片性状空间变异具有方向性,单叶面积空间变异在东北-西南方向上最大,在西北-东南方向上最小;比叶面积和叶片干物质含量的空间变异均在西北-东南方向最大,在东北-西南方向最小。3)单叶面积与地形因子显著负相关(r=–0.12,p<0.000 1);比叶面积与土壤养分显著负相关(r=–0.16,p<0.000 1),叶片干物质含量与土壤养分显著正相关(r=0.13,p<0.000 1)。4)东北-西南方向上,地形因子对单叶面积、比叶面积和叶片干物质含量空间变异的影响大于土壤养分;西北-东南方向上,地形因子对单叶面积空间变异的影响相对较大,而土壤养分对比叶面积和叶片干物质含量空间变异的影响较大。总之,在研究样地内,植物叶片性状随空间距离和方向存在很大的变异性,叶片性状与地形因子、土壤养分的关联性间接表明了环境过滤对群落构建的影响。 | 许洺山 赵延涛 杨晓东 史青茹 周刘丽 张晴晴 Ali ARSHAD 阎恩荣 | 2016 | 植物生态学报2016，40，1： | 13 |
| 5 | 浙江天童常绿阔叶林演替过程中土壤碳库与植被碳归还的关系显示文摘土壤碳固持量随森林演替显著提高,对减缓全球变暖具有重要意义;但是,演替过程中土壤有机碳库与植被碳归还的关系尚无定论。该研究以浙江天童常绿阔叶林次生演替系列为对象,通过测定前中后3个演替阶段土壤总有机碳(TOC)、可矿化碳(MC)、可溶性有机碳(DOC)和微生物量碳(MBC)3种活性有机碳的含量与储量,植被凋落物年凋落量、地表枯落物现存量和细根年归还量及其碳储量,利用相关分析和多元逐步回归拟合,分析土壤碳库与植被碳输入的关系。结果表明:(1)土壤TOC、MC、DOC和MBC含量随演替进行均显著增加(p<0.05);(2)随演替进行,土壤TOC储量显著增加(p<0.05),而MC、DOC和MBC储量并没有出现一致的变化趋势,其排序为:中期>后期>前期;(3)凋落物年凋落量及其碳储量随演替显著增加(p<0.05),细根年归还量及其碳储量随演替先增后降(p<0.05),而地表枯落物现存量与碳储量显著降低;(4)3种活性有机碳中,MC储量对土壤总有机碳储量解释的贡献率为34.01%(R2=0.388,p<0.05);(5)TOC和活性碳库(MC、DOC、MBC)受到不同碳归还方式的影响,但细根的影响最大(分别为28.2%、50.0%、73.4%和68.8%)。总之,随天童常绿阔叶林演替发生,土壤总有机碳和3种活性有机碳储量显著增加,细根生物量和可矿化碳库储量增加是引起土壤碳固持量增加的主要原因。 | 孙宝伟 杨晓东 张志浩 马文济 Ali ARSHAD 黄海侠 阎恩荣 | 2013 | 植物生态学报2013，37，9： | 10 |
| 6 | 浙江天童常绿阔叶林不同演替阶段木本植物的水力结构特征显示文摘水力结构是植物应对环境形成的与水分运输相关的形态策略。探索不同演替阶段和群落不同高度层植物的水力结构特征,有助于理解植物的水分运输和利用策略。该研究以浙江天童常绿阔叶林演替前中后期群落的上层木(占据林冠层的树种)和下层木(灌木层物种)为对象,测定了演替共有种(至少存在于两个演替阶段的物种)和更替种(仅存在于某一演替阶段的物种)的枝边材比导率、叶比导率和胡伯尔值,以及边材疏导面积、末端枝总叶面积和枝条水势,分析植物水力结构在群落上层木和下层木间以及在演替阶段间的差异,及其与枝叶性状的相关关系。结果显示:(1)上层木植物边材比导率和叶比导率显著高于下层木植物(p<0.05);(2)上层木和下层木的边材比导率与叶比导率在演替阶段间均无显著差异(p>0.05);上层木的胡伯尔值在演替阶段间无显著差异,下层木的胡伯尔值随演替显著下降(p<0.05);(3)上层木共有种仅边材比导率随演替进行显著降低(p<0.05),更替种的3个水力结构参数在演替阶段间无显著差异;下层木共有种水力结构参数在演替阶段间无明显差异,更替种仅胡伯尔值随演替减小(p<0.05);(4)植物边材比导率与枝疏导面积和末端枝所支撑的总叶面积显著正相关(p<0.01),胡伯尔值与枝条水势及末端枝总叶面积显著负相关(p<0.01)。以上结果表明:天童常绿阔叶林演替各阶段上层木比下层木具有更大的输水能力和效率;随着演替进行,上层木与下层木的共有种和更替种边材比导率的相反变化表明上层木水力结构的变化可能由微生境变化引起,而下层木水力结构特征的变化可能由物种更替造成。 | 赵延涛 许洺山 张志浩 周刘丽 张晴晴 Ali ARSHAD 宋彦君 阎恩荣 | 2016 | 植物生态学报2016，40，2： | 10 |
| 7 | 浙江普陀山岛森林凋落物动态与微气候的关联性显示文摘森林凋落物动态是森林生态系统过程中的重要组成部分,探索森林凋落物动态特征与微气候间的关系,对深入了解生态系统变化过程运行机理具有重要意义。该研究以浙江普陀山岛典型森林类型枫香(Liquidambar formosana)林、天竺桂(Cinnamomum japonicum)+红楠(Machilus thunbergii)林、马尾松(Pinus massoniana)林、青冈(Cyclobalanopsis glauca)林、台湾蚊母树(Distylium gracile)林为研究对象,探究森林凋落量与微气候的关系。结果表明:1)森林年凋落量介于3.45–5.36t·hm–2·a–1,年凋落量各组分比例表现出不同的组成特征,森林类型与森林月凋落量无关。2)森林月凋落量动态模式主要呈双峰型和三峰型,凋落峰值和风速峰值趋势相一致,主要集中在台风干扰较大的4、7、12月份。3)冗余分析结果表明,影响不同组分月凋落量的微气候因子不同:月总凋落量、叶凋落量、果凋落量和碎屑凋落量的主要控制因素均为空气温度,随空气温度的升高而增大;枝凋落量的主要影响因素是森林上层风速,同样起着显著的正向作用;花凋落量与空气湿度之间呈负相关关系。森林年凋落量各组分所占比例存在差异,森林月凋落量和森林类型无关,主要与空气温度、空气湿度、森林上层风速等微气候因子有关。 | 宋彦君 田文斌 刘翔宇 尹芳 程浚洋 朱丹妮 Ali ARSHAD 阎恩荣 | 2016 | 植物生态学报2016，40，11： | 7 |
| 8 | Transcranial magnetic stimulation in animal models of neurodegeneration显示文摘Brain stimulation techniques offer powerful means of modulating the physiology of specific neural structures. In recent years, non-invasive brain stimulation techniques, such as transcranial magnetic stimulation(TMS) and transcranial direct current stimulation, have emerged as therapeutic tools for neurology and neuroscience. However, the possible repercussions of these techniques remain unclear, and there are few reports on the incisive recovery mechanisms through brain stimulation. Although several studies have recommended the use of non-invasive brain stimulation in clinical neuroscience, with a special emphasis on TMS, the suggested mechanisms of action have not been confirmed directly at the neural level. Insights into the neural mechanisms of non-invasive brain stimulation would unveil the strategies necessary to enhance the safety and efficacy of this progressive approach. Therefore, animal studies investigating the mechanisms of TMSinduced recovery at the neural level are crucial for the elaboration of non-invasive brain stimulation. Translational research done using animal models has several advantages and is able to investigate knowledge gaps by directly targeting neuronal levels. In this review, we have discussed the role of TMS in different animal models, the impact of animal studies on various disease states, and the findings regarding brain function of animal models after TMS in pharmacology research. | Mohammad Uzair Turki Abualait Muhammad Arshad Woo-Kyoung Yoo Ali Mir Reem Fahd Bunyan Shahid Bashir | 2022 | Neural Regeneration Research2022，17，2： | 4 |
| 9 | 骚扰摇蚊的生态学研究概况显示文摘摇蚊(Chironomid midge)俗称盲蚊,属于双翅目摇蚊科的全变态昆虫。迄今世界上已知有5000余种,我网已知仅150余种,据我国学者初步估计,可能分布有1200余种。摇蚊的研究历史悠久,据1992年《Newsletter of Chironomid Research》介绍,到1991年底有1.2万余篇关于摇蚊的文献,现正编写文献目录。 | 薛瑞德 Arshad Ali | 1993 | 中国媒介生物学及控制杂志1993，4，4： | 3 |
| 10 | 应用于卫生害虫防治的昆虫生长调节剂的文献综述显示文摘近年来,应用于卫生害虫防治的昆虫生长调节剂的文献大量出现。已研究与应用的昆虫生长调节剂的类型包括昆虫保幼激素及其类似物,几丁质合成抑制剂和其它可改变昆虫生长作用的化合物。在实验室与现场已对许多种化合物防治不同骚扰性与媒介昆虫的作用进行了评价,其中阿尔多息,敌灭灵与灭幼宝等具有较好的防治作用,已在许多国家被注册,并应用于卫生害虫及兽医害虫的防治。自从Mian与Mulla(1982)关于这些化合物的作用以及对环境的影响的文献综述发表以后,已有许多研究和进展。迄今,关于昆虫生长调节剂防治的害虫类群已从叮咬性与骚扰或污染性的几种双翅目昆虫扩大到蚤类、蝉螂、蚂蚁等。本文分析与总结了近十年来关于应用于卫生害虫防治的昆虫生长调节剂的研究概况,并重点放在剂型的评价,新的防治机理,抗性的产生与状况以及对环境中非靶生物的影响。引用的文献为1983年至1994年。 | 薛瑞德 赵彤言 Arshad Ali | 1995 | 医学动物防制1995，11，3： | 3 |
| 11 | Machine learning and geostatistical approaches for estimating aboveground biomass in Chinese subtropical forests显示文摘Background:Aboveground biomass(AGB)is a fundamental indicator of forest ecosystem productivity and health and hence plays an essential role in evaluating forest carbon reserves and supporting the development of targeted forest management plans.Methods:Here,we proposed a random forest/co-kriging framework that integrates the strengths of machine learning and geostatistical approaches to improve the mapping accuracies of AGB in northern Guangdong Province of China.We used Landsat time-series observations,Advanced Land Observing Satellite(ALOS)Phased Array L-band Synthetic Aperture Radar(PALSAR)data,and National Forest Inventory(NFI)plot measurements,to generate the forest AGB maps at three time points(1992,2002 and 2010)showing the spatio-temporal dynamics of AGB in the subtropical forests in Guangdong,China.Results:The proposed model was capable of mapping forest AGB using spectral,textural,topographical variables and the radar backscatter coefficients in an effective and reliable manner.The root mean square error of the plotlevel AGB validation was between 15.62 and 53.78 t∙ha^(−1),the mean absolute error ranged from 6.54 to 32.32 t∙ha^(−1),the bias ranged from−2.14 to 1.07 t∙ha^(−1),and the relative improvement over the random forest algorithm was between 3.8%and 17.7%.The largest coefficient of determination(0.81)and the smallest mean absolute error(6.54 t∙ha^(−1)were observed in the 1992 AGB map.The spectral saturation effect was minimized by adding the PALSAR data to the modeling variable set in 2010.By adding elevation as a covariable,the co-kriging outperformed the ordinary kriging method for the prediction of the AGB residuals,because co-kriging resulted in better interpolation results in the valleys and plains of the study area.Conclusions:Validation of the three AGB maps with an independent dataset indicated that the random forest/cokriging performed best for AGB prediction,followed by random forest coupled with ordinary kriging(random forest/ordinary kriging),and the random forest model.The proposed random forest/co-kriging framework provides an accurate and reliable method for AGB mapping in subtropical forest regions with complex topography.The resulting AGB maps are suitable for the targeted development of forest management actions to promote carbon sequestration and sustainable forest management in the context of climate change. | Huiyi Su Wenjuan Shen Jingrui Wang Arshad Ali Mingshi Li | 2020 | Forest Ecosystems2020，7，4： | 3 |
| 12 | 用于杀虫剂评价的水池中无脊椎动物的群落结构及其种群动态显示文摘实验水池是评价杀虫剂效应和安全性的重要场所,水池中无脊椎动物群落结构和种群动态是评价杀虫剂的基础资料和考核指标。本文报告1992年至1993年在美国佛罗里达中部地区对应用于杀虫剂评价的实验水池中昆虫与其它无脊椎动物群落结构及其优势种的种群动态研究结果。用羽化诱捕、勺舀、网拉及挖取底物法,从实验水池中共采到昆虫与其它无脊椎动物50余类。其中,羽化诱捕到的昆虫中摇蚊占93.9%,蜉蝣目昆虫占4.6%,莹蚊占1.5%;水面勺舀采样所获昆虫中,半翅目占62%,鞘翅目占14.6%,双翅目占12.1%,晴蜓目占4.9%,其它无脊椎动物占6.4%;网拉法所获其它无脊椎动物中,轮虫占46.8%,桡足类占41%,枝角目类占12%;挖取底物法所获无脊椎动物中,线虫占53.7%,摇蚊幼虫占36.9%,其它占9.4%,优势种的变化与池中水深、pH以及氧含量的季节变化有关。 | 薛瑞德 Arshad Ali 赵彤言 | 1996 | 寄生虫与医学昆虫学报1996，3，1： | 3 |
| 13 | Cloud authorization: exploring techniques and approach towards effective access control framework显示文摘 | Rahat MASOOD Muhammad Awais SHIBLI Yumna GHAZI Ayesha KANWAL Arshad ALI | 2015 | Frontiers of Computer Science2015，9，2： | 3 |
| 14 | Effect of family control on corporate dividend policy of firms in Pakistan显示文摘This study examines the impact of family control on the dividend policy of firms in Pakistan,covering the period from 2009 to 2016.It also investigates whether family control moderates the impact of firm-specific factors on the dividend policy.The GMM model for panel data estimation is used.The mean difference univariate analysis shows that family firms differ from nonfamily firms based on financial characteristics.The multivariate analysis shows that family firms pay lower dividends than nonfamily firms.Besides,firm size inversely affects the dividend policy,whereas tangibility positively affects it.Moreover,family control does not moderate the impact of all firm-specific factors on the dividend policy.Overall,family control,size,and tangibility are found to be the main determinants of the dividend policy in Pakistan. | Imran Yousaf Shoaib Ali Arshad Hassan | 2019 | Financial Innovation2019，5，1： | 2 |
| 15 | Influence of soil microorganisms and physicochemical properties on plant diversity in an arid desert of Western China显示文摘Soil microorganisms and physicochemical properties are considered the two most influencing factors for maintaining plant diversity.However,the operational mechanisms and which factor is the most influential manipulator remain poorly understood.In this study,we examine the collaborative influences of soil physicochemical properties(i.e.,soil water,soil organic matter(SOM),salinity,total phosphorus and nitrogen,pH,soil bulk density and fine root biomass)and soil microorganisms(fungi and bacteria)on plant diversity across two types of tree patches dominated by big and small trees(big trees:height≥7 m and DBH≥60 cm;small trees:height≤4.5 m and DBH≤20 cm)in an arid desert region.Tree patch is consists of a single tree or group of trees and their accompanying shrubs and herbs.It was hypothesized that soil physicochemical properties and microorganisms affect plant diversity but their influence differ.The results show that plant and soil microbial diversity increased with increasing distances from big trees.SOM,salinity,fine root biomass,soil water,total phosphorus and total nitrogen contents decreased with increasing distance from big trees,while pH and soil bulk density did not change.Plant and soil microbial diversity were higher in areas close to big trees compared with small trees,whereas soil physicochemical properties were opposite.The average contribution of soil physicochemical properties(12.2%-13.5%)to plant diversity was higher than microbial diversity(4.8%-6.7%).Salinity had the largest negative affect on plant diversity(24.7%-27.4%).This study suggests that soil fungi constrain plant diversity while bacteria improve it in tree patches.Soil physicochemical properties are the most important factor modulating plant diversity in arid desert tree patches. | Xiaodong Yang Yanxin Long Binoy Sarkar Yan Li Guanghui Lv Arshad Ali Jianjun Yang Yue-E.Cao | 2021 | Journal of Forestry Research2021，32，6： | 2 |
| 16 | Remote ischaemic conditioning for stroke: unanswered questions and future directions显示文摘Remote ischaemic conditioning(RIC)refers to a process whereby periods of intermittent ischaemia,typically via the cyclical application of a blood pressure cuff to a limb at above systolic pressure,confers systemic protection against ischaemia in spatially distinct vascular territories.The mechanisms underlying this have not been characterised fully but have been shown to involve neural,hormonal and systemic inflammatory signalling cascades.Preclinical and early clinical studies have been promising and suggest beneficial effects of RIC in acute ischaemic stroke,symptomatic intracranial stenosis and vascular cognitive impairment.Through systematic searches of several clinical trials databases we identified 48 active clinical trials of RIC in ischaemic stroke,intracerebral haemorrhage and subarachnoid haemorrhage.We summarise the different RIC protocols and outcome measures studied in ongoing clinical trials and highlight which studies are most likely to elucidate the underlying biological mechanisms of RIC and characterise its efficacy in the near future.We discuss the uncertainties of RIC including the optimal frequency and duration of therapy,target patient groups,cost-effectiveness,the confounding impact of medications and the absence of a clinically meaningful biomarker of the conditioning response.With several large clinical trials of RIC expected to report their outcomes within the next 2 years,this review aims to highlight the most important studies and unanswered questions that will need to be addressed before this potentially widely accessible and low-cost intervention can be used in clinical practice. | Sheharyar Baig Bethany Moyle Krishnan Padmakumari Sivaraman Nair Jessica Redgrave Arshad Majid Ali Ali | 2021 | Stroke & Vascular Neurology2021，6，2： | 2 |
| 17 | The electronic and magnetic properties of wurtzite Mn:CdS, Cr:CdS and Mn:Cr:CdS: first principles calculations显示文摘In this article, density functional theory(DFT) based on generalized gradient approximation(GGA)and GGACU, U is Hubbard term, is used to study the electronic properties of CdS doped with different dopants(Cr, Mn). The calculations are carried out for Mn-doped CdS, Cr-doped CdS, and co-doping of Mn/Cr in CdS simultaneously. It is found that hopping of electrons is possible with Cr:CdS and Mn:Cr:CdS while Mn:CdS does not allow the hopping of electrons. Moreover, double exchange interactions are observed in Cr:CdS and d-d superexchange interactions are observed in Mn:CdS. Now the problem becomes interesting when one magnetic ion(Cr) supporting double exchange interactions and another ion(Mn) supporting d-d super-exchange interactions are doped simultaneously in the same system(CdS). The co-doped CdS is more stable even at high Curie temperature due to p-d double exchange interactions and d-d super exchange interactions. Furthermore, the Cr-3d and Mn-3d states present in-between the band gap are responsible for inner shell transitions and hence for optical properties.Therefore, the co-doped system is taken into account to enhance its applications in the field of spintronic and magneto-optical devices. | Azeem Nabi Zarmeena Akhtar Tahir Iqbal Atif Ali Muhammad Arshad Javid | 2017 | Journal of Semiconductors2017，38，7： | 2 |
| 18 | Generalized and species-specific prediction models for aboveground biomass in semi-steppe rangelands显示文摘Aims The accurate estimation of aboveground biomass in vegetation is critical for global carbon accounting.Regression models provide an easy estimation of aboveground biomass at large spatial and temporal scales.Yet,only few prediction models are available for aboveground biomass in rangelands,as compared with forests.In addition to the development of prediction models,we tested whether such prediction models vary with plant growth forms and life spans,and with the inclusion of site and/or quadrat-specific factors.Methods We collected dataset of aboveground biomass from destructive harvesting of 8088 individual plants belonging to 79 species in 735 quadrats across 35 sites in semi-steppe rangelands in Iran.A logarithmic transformation of the power-law model was used to develop simple prediction models for the easy estimation of above-ground biomass using plant coverage and vegetation density as predictors for the species-specific model,multispecies and plants of different growth forms and life spans.In addition,additive and multiplicative linear regression models were developed by using plant coverage and one categorical variable from the site and/or quadrat-specific factors.Important Findings The log-transformed power-law model based on plant coverage pre-cisely predicted aboveground biomass across the whole dataset for ei-ther most of the species-specific model,multispecies or plants of the same growth forms(shrubs,forbs or graminoids)and life spans(annuals,biennials or perennials).The addition of vegetation density as a single or in a compound predictor variable had relatively poor performance com-pared with the model having plant coverage only.Although generalizing at the levels of plant group forms and/or life spans did not substantially enhance the model-fit and validation of the plant coverage-based mul-tispecies model,the inclusion of plant growth forms or life spans as a categorical predictor variable had performed well.Generalized models in this study will greatly contribute to the accurate and easy predic-tion of aboveground biomass in the studied rangelands and will be also useful to rangeland practitioners and ecological modellers interested in the global relationship between biodiversity and aboveground biomass productivity across space and time in natural rangelands. | Anvar Sanaei Arshad Ali Khaled Ahmadaali Esfandiar Jahantab | 2019 | Journal of Plant Ecology2019，12，3： | 2 |
| 19 | Fine-scale habitat differentiation shapes the composition, structure and aboveground biomass but not species richness of a tropical Atlantic forest显示文摘Evaluating the influences of fine-scale habitat heterogeneity on the composition,diversity,structure and functioning of forests is critical to understand how tropical forests will respond to climate change and devise forest management strategies that will enhance biodiversity conservation and aboveground biomass stock.Here,we hypothesized that topographic and soil factors determine fine-scale habitat differentiation,which in turn shape community composition,species richness,structure and aboveground biomass at the local scale in tropical forests.To test this hypothesis,we selected two areas(each 100×100 m)with contrasting fine-scale topographic conditions where all trees,palms and lianas with a diameter at breast height ≥ 10 cm were tagged and identified to species.In each selected area,100 subplots of 10×10 m were established.We mainly found that higher topographic variability caused higher habitat differentiation with changes in species composition and community structure,but did not change species richness.Our habitat-scale analyses indicated that,in the less heterogeneous area,the distribution of species was more uniform along a fine-scale topographical gradient with no variation in convexity,which induced changes in structure and aboveground biomass,but not in species richness.The nonsignificant relationship between species richness and aboveground biomass may be attributable to species redundancy or functional dominance.This study suggests that environmental filtering is a fundamental process for shaping community assembly and forest functioning along a local topographical gradient in tropical forests. | Alice Cristina Rodrigues Pedro Manuel Villa Arshad Ali Walnir Ferreira-Junior Andreza Viana Neri | 2020 | Journal of Forestry Research2020，31，5： | 2 |
| 20 | Oviposition preference of swallowtail butterfly, Papilio polytes (Lepidoptera Papilionidae) on four Rutaceae (Sapindales) host plant species显示文摘 | Suwarno M.R. Che Salmah Arshad Ali A. Abu Hassan | 2010 | Insect Science2010，17，4： | 1 |
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