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TOXICITY OF COMMONLY USED CHEMICAL INSECTICIDES ON MANGO HOPPER 常用化学杀虫剂对芒果斗的毒性研究
Q2 Environmental Science Pub Date : 2023-06-01 DOI: 10.59619/ej.5.1.1
M. Amin, Tanjil Rahman, M. Afroz, Md. Abdul Mannan
Mango production in Bangladesh is enormously affected by the infestation of hopper which punctures and sucks sap from tender shoots, inflorescences, and leaves of mango tree, causing non-setting of fruits and dropping of immature fruits. Control of mango hopper in recent days is solely done by synthetic insecticides. This study was conducted in the laboratory during January to October 2022 to know the toxicity of four commonly used insecticides, namely Desis 2.5 EC (Deltamethrin), Ripcord 10 EC (Cypermethrin), Relothrin 10 EC (Cypermethrin), and Sumithion 50 EC (Fenitrothion) on mango hopper. The doses of Desis 2.5 EC, Ripcord 10 EC and Relothrin 10 EC were prepared as 1200, 1000, 750, 500 and 100 ppm, and Sumithion 50 EC solutions were 2500, 2200, 1500, 1000 and 500 ppm. Results showed that the tested insecticides with their recommended doses revealed 51.4±2.5 to 70.6±1.8% mortality of hopper at 4 hours after treatment where Desis 2.5 EC showed the highest mean mortality of the insect. Desis 2.5 EC also showed the lowest LC50 and LC95 values (426.0 and 4331.4 ppm, respectively at 4 hours after treatment) signifying its higher effectiveness compared to other tested insecticides.
孟加拉国的芒果生产受到了一种蝗灾的严重影响,这种蝗灾会从芒果树的嫩枝、花序和叶子上刺穿并吸取汁液,造成果实不结实和未成熟果实掉落。最近,芒果跳虫的防治完全依靠合成杀虫剂。本研究于2022年1 - 10月在实验室进行了四种常用杀虫剂Desis 2.5 EC(溴氰菊酯)、Ripcord 10 EC(氯氰菊酯)、Relothrin 10 EC(氯氰菊酯)和Sumithion 50 EC(灭螨乐磷)对芒果飞虱的毒性研究。将Desis 2.5 EC、Ripcord 10 EC和Relothrin 10 EC分别配制为1200、1000、750、500和100 ppm, sumiion 50 EC分别配制为2500、2200、1500、1000和500 ppm。结果表明,在推荐剂量下,处理后4 h,雏菊的死亡率为51.4±2.5 ~ 70.6±1.8%,其中Desis 2.5 EC的平均死亡率最高。在处理后4 h, Desis 2.5 EC的LC50和LC95值最低(分别为426.0和4331.4 ppm),表明其效果优于其他被试杀虫剂。
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引用次数: 0
Feasibility of Relative Strain Index (RSI) for the Assessment of Heat Stress in Outdoor Environments: Case Study in Three Different Climates of Iran 相对应变指数(RSI)评价室外环境热应力的可行性——以伊朗三种不同气候条件为例
Q2 Environmental Science Pub Date : 2020-06-05 DOI: 10.2174/1874213002013010011
M. Asghari, G. F. Ghalhari, Marzieh Abbasinia, Fahimeh Shakeri, Reza Tajik, M. Ghannadzadeh
Department of Occupational Health Engineering, School of Public Health, Arak University of Medical Sciences, Arak, Iran Faculty of Geography and Environmental Sciences, Hakim Sabzevari University, Sabzevar, Iran Department of Occupational Health Engineering, School of Public Health, Hamadan University of Medical Sciences, Hamadan, Iran Department of Environmental Health Engineering, School of Public Health, Arak University of Medical Sciences, Arak, Iran
伊朗阿拉克医学科学大学公共卫生学院职业卫生工程系,伊朗阿拉克哈基姆·萨布泽瓦里大学地理与环境科学学院,伊朗萨布泽瓦尔,伊朗哈马丹医学科学大学公共卫生学院职业卫生工程系,伊朗哈马丹,伊朗阿拉克医学科学大学公共卫生学院环境卫生工程系,伊朗阿拉克
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引用次数: 9
Exploration of Ecological Footprint in the Kingdom of Saudi Arabian Developed Waterfronts: The Case of King Abdullah Seafront Park (KASP) – Dammam 沙特阿拉伯发达海滨王国生态足迹探索:以阿卜杜拉国王海滨公园(KASP)为例-达曼
Q2 Environmental Science Pub Date : 2018-11-09 DOI: 10.2174/1874213001811010075
A. Al-Sulbi
Sustainable development identifies the requirements for the environmental enhancements while preserving a balance among environmental factors. Sustainable integrated systems reinforced or promoted the persistence of the structural and operational components into the natural component.The study aims to apply a modified ecological footprint model to assess how much the ecosystem functions were affected by the development of urban waterfronts in the Kingdom of Saudi Arabia.A modified ecological footprint model has been applied to assess the outcomes obtained from the ecosystem functions of urban waterfronts.The study revealed alteration or embedment of natural processes in all developed urban waterfronts; leading to loss of biodiversity, diminishment of site productivity, and increase of hidden costs regarding maintenance and replacement. It has positive performance in biodiversity enrichment, continuous productivity, maintenance and enhancement of natural physical and biological processes.The sustainable designs for urban waterfronts should aiming for the enhancement of natural processes for the productivity of coastal areas.
可持续发展确定了加强环境的要求,同时保持环境因素之间的平衡。可持续综合系统加强或促进了结构和业务组成部分融入自然组成部分的持久性。该研究旨在应用一个修正的生态足迹模型来评估沙特阿拉伯王国城市滨水区开发对生态系统功能的影响程度。一个修正生态足迹模型已用于评估从城市滨水区生态系统功能中获得的结果。该研究揭示了所有发达城市滨水区的自然过程的改变或嵌入;导致生物多样性的丧失、场地生产力的降低以及维护和更换方面的隐性成本的增加。它在丰富生物多样性、持续生产力、维持和增强自然物理和生物过程方面有着积极的表现。城市海滨的可持续设计应旨在提高沿海地区生产力的自然过程。
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引用次数: 0
Livelihood Vulnerability Associated with Forest Fire in Pauri-Garhwal, Western Himalaya 西喜马拉雅保里加瓦尔地区与森林火灾相关的生计脆弱性
Q2 Environmental Science Pub Date : 2018-08-31 DOI: 10.2174/1874213001811010062
S. Jha, Purna Jana, A. Negi, R. S. Negi
The livelihood of mountainous communities of Himalayan region closely knotted with forest related activities. However, forest degradation especially forest fire significantly affects the mountainous livelihood and hence, there is an urgent need to describe, evaluate and understand specificity of mountainous areas to forest fire. In this view, a study on livelihood vulnerability with forest fire of High Altitude Zone (HAZ) and Low Altitude Zone (LAZ) was assessed with Livelihood Vulnerability Index (LVI). It uses 35 indicators, reduced to six components to create an overall index. Each component is composed of set of indicators and they are function of observable variables. The framework uses primary data and employs maximum-minimum normalization to restrict the value range of indicators between 0 to 1. The value near to 0 shows lower vulnerability. The overall vulnerability of HAZ region is higher, that might be attributed to higher dependency on forest; live in proximity of forest; unstable socioeconomic condition; less infrastructural development and higher exposure to climatic extreme events. Therefore, the adaptive capacity of HAZ should be strengthened in a cross cutting manner for reducing livelihood vulnerability to forest fire. The sectors specific developmental policies/programmes should also be rationalized through bottom up adaptation planning with special reference to forest fire vulnerability.
喜马拉雅地区山区居民的生计与森林相关活动密切相关。然而,森林退化特别是林火严重影响山区生计,因此,迫切需要描述、评估和了解山区对林火的特殊性。在此基础上,采用生计脆弱性指数(LVI)对高海拔区(HAZ)和低海拔区(LAZ)森林火灾下的生计脆弱性进行了评价。它使用35个指标,减少到6个组成部分来创建一个整体指数。每个成分都由一组指标组成,它们是可观察变量的函数。该框架使用原始数据,采用最大最小归一化将指标的取值范围限制在0到1之间。接近0的值表示漏洞较低。热影响区总体脆弱性较高,可能与对森林的依赖程度较高有关;住在森林附近;社会经济条件不稳定;基础设施发展不足,极端气候事件频发。因此,应以交叉方式加强HAZ的适应能力,以降低生计对森林火灾的脆弱性。该部门的具体发展政策/方案也应通过自下而上的适应规划加以合理化,特别要注意森林火灾的脆弱性。
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引用次数: 5
Natural and Anthropogenic Impacts on Forest Structure: A Case Study of Uttarakhand State 自然和人为对森林结构的影响:以北阿坎德邦为例
Q2 Environmental Science Pub Date : 2018-08-13 DOI: 10.2174/1874213001811010038
J. S. Chauhan, A. Gautam, R. Negi
Forests are among the most important natural resources in Uttarakhand as they occupy 71% of the geographic area and contribute a good share in state economy. They are rich repositories of biodiversity and are providers of ecosystem goods and services to both regional and global community. People are dependent on forests for fuel wood, grass and other biomass. But unfortunately recent trend of data shows a huge degradation of forestland due to natural and anthropogenic activities. Variations in climatic condition and natural disasters are triggering rate of degradation of forests in Uttarakhand. The present paper reviews the status of forest in Uttarakhand and discusses the major natural and anthropogenic factors responsible for its degradation.
森林是北阿坎德邦最重要的自然资源之一,因为它们占据了71%的地理面积,在国家经济中占有很大份额。它们是丰富的生物多样性宝库,为区域和全球社会提供生态系统商品和服务。人们依赖森林获取燃料木材、草和其他生物量。但不幸的是,最近的数据趋势显示,由于自然和人为活动,林地严重退化。气候条件的变化和自然灾害正在引发北阿坎德邦森林退化的速度。本文回顾了北阿坎德邦森林的现状,并讨论了导致其退化的主要自然和人为因素。
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引用次数: 10
Greenhouse Gas Emission, Rainfall and Crop Production Over North-Western India 印度西北部的温室气体排放、降雨和作物生产
Q2 Environmental Science Pub Date : 2018-08-13 DOI: 10.2174/1874213001811010047
Vinay Kumar, S. Jana, A. Bhardwaj, R. Deepa, S. Sahu, Priyadarshee Pradhan, S. Sirdaş
This study is based on datasets acquired from multi sources e.g. rain-gauges, satellite, reanalysis and coupled model for the region of Northwestern India. The influence of rainfall on crop production is obvious and direct. With the climate change and global warming, greenhouse gases are also showing an adverse impact on crop production. Greenhouse gases (e.g. CO2, NO2 and CH4) have shown an increasing trend over Northwestern Indian region. In recent years, rainfall has also shown an increasing trend over Northwestern India, while the production of rice and maize are reducing over the region. From eight selected sites, over Northwestern India, where rice and maize productions have reduced by 40%, with an increase in CO2, NO2 and CH4 gas emission by 5% from 1998 to 2011. The correlation from one year to another between rainfall, gas emission and crop production was not very robust throughout the study period, but seemed to be stronger for some years than others. Such trends and crop yield are attributed to rainfall, greenhouse gas emissions and to the climate variability.
这项研究基于从多个来源获得的数据集,如雨量计、卫星、再分析和印度西北地区的耦合模型。降雨对作物生产的影响是明显而直接的。随着气候变化和全球变暖,温室气体也对作物生产产生了不利影响。印度西北部地区的温室气体(如CO2、NO2和CH4)呈增加趋势。近年来,印度西北部的降雨量也呈增加趋势,而该地区的水稻和玉米产量正在减少。从印度西北部的八个选定地点来看,从1998年到2011年,那里的水稻和玉米产量减少了40%,二氧化碳、NO2和CH4气体排放量增加了5%。在整个研究期间,降雨、气体排放和作物产量之间的相关性在一年与另一年之间不是很强,但在某些年份似乎比其他年份更强。这种趋势和作物产量归因于降雨、温室气体排放和气候变化。
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引用次数: 4
Preliminary Analysis of the Influence of Reinforced Mortar Coating on the Compressive Strength of Clay Bricks 粘结砂浆涂层对粘土砖抗压强度影响的初步分析
Q2 Environmental Science Pub Date : 2018-04-12 DOI: 10.2174/1874149501812010071
A. Azevedo, J. Delgado, A. S. Guimarães, Fernando A. N. Silva, R. A. Oliveira
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引用次数: 1
Reliability analysis based on Artificial Bee Colony (ABC) and its application in geotechnical engineering 基于人工蜂群的可靠度分析及其在岩土工程中的应用
Q2 Environmental Science Pub Date : 2018-04-10 DOI: 10.2174/1874149501812010096
Hongbo Zhao, Changxing Zhu, Z. Ru
Methods: Artificial Bee Colony (ABC) algorithm is a very simple, robust and population-based stochastic optimization algorithm. In this study, an ABC-based reliability analysis was proposed to calculate the reliability index of engineering system through combining Artificial Bee Colony (ABC) algorithm with FORM. FORM was adopted to calculate the reliability index and design point. ABC is used to solve the constrained optimization about FORM. The procedure of ABC-based reliability analysis was presented in detail.
方法:人工蜂群(ABC)算法是一种简单、稳健、基于种群的随机优化算法。本研究将人工蜂群算法与FORM相结合,提出了一种基于ABC的可靠性分析方法来计算工程系统的可靠性指标。将ABC方法用于求解FORM的约束优化问题,详细介绍了基于ABC的可靠性分析过程。
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引用次数: 4
Skin Spotting Variation Associated with Biometric and Reproductive Parameters in Naturalized Populations of Rainbow Trout, Oncorhynchus mykiss, from Southern Chile 智利南部归化虹鳟鱼种群的皮肤斑点变异与生物特征和生殖参数相关
Q2 Environmental Science Pub Date : 2018-03-09 DOI: 10.2174/1874213001811010025
N. Colihueque, F. Estay, Miguel Yáñez
RESEARCH ARTICLE Skin Spotting Variation Associated with Biometric and Reproductive Parameters in Naturalized Populations of Rainbow Trout, Oncorhynchus mykiss, from Southern Chile Nelson Colihueque, Francisco Javier Estay and Miguel Yáñez Departamento de Ciencias Biológicas y Biodiversidad, Universidad de Los Lagos, Osorno, Chile Piscícola Huililco Ltda., Pucón, Chile Departamento de Estadística, Universidad del Bío-Bío, Concepción, Chile
Nelson Colihueque, Francisco Javier Estay和Miguel yanez生物科学与生物多样性系,Universidad de Los Lagos, Osorno, Chile piscicola Huililco ltd。, pucon,智利,bio - bio大学统计学系,concepcion,智利
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引用次数: 0
Effectiveness of Protected Areas in Conserving the Highly Hunted Mammal Species as Bushmeat in Southern Benin 保护区在保护贝宁南部丛林动物等高度狩猎哺乳动物方面的有效性
Q2 Environmental Science Pub Date : 2018-03-07 DOI: 10.2174/1874213001811010014
C. Djagoun, E. Sogbohossou, B. Kassa, Christian B. Ahouandjinou, H. Akpona, B. Sinsin
RESEARCH ARTICLE Effectiveness of Protected Areas in Conserving the Highly Hunted Mammal Species as Bushmeat in Southern Benin Chabi A.M.S. Djagoun, Etotépé A. Sogbohossou, Barthélémy Kassa, Christian B. Ahouandjinou, Hugues A. Akpona and Brice Sinsin Laboratory of Applied Ecology, Faculty of Agronomic Sciences, University of Abomey-calavi, 01BP526 LEA-FSA, Cotonou, Benin Direction Générale des Forêts et des Ressources Naturelles, BP. 393 Cotonou, Bénin University of Rostock, Agricultural and Environmental Faculty, Grassland and Fodder Sciences, Justus-von-LiebigWeg 6, 18059, Rostock, Germany
研究文章保护区在保护贝宁南部丛林动物等高度狩猎哺乳动物物种方面的有效性Chabi A.M.S.Djagoun、EtotépéA.Sogbohossou、Barthélémy Kassa、Christian B.Ahouandjinou、Hugues A.Akpona和Brice Sinsin应用生态学实验室,阿波美卡拉维大学农业科学学院,01BP526 LEA-FSA,科托努,贝宁天然资源与资源部,英国石油公司。393科托努,罗斯托克贝宁大学,农业和环境学院,草原和饲料科学,Justus von LiebigWeg 6,18059,罗斯托克,德国
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引用次数: 4
期刊
Open Ecology Journal
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