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Energy Efficiency Analysis and Modeling the Relationship between Energy Inputs and Wheat Yield in Iran 伊朗能源效率分析及能源投入与小麦产量关系建模
Pub Date : 2015-12-01 DOI: 10.22004/AG.ECON.262525
F. Kardoni, M. Ahmadi, M. R. Bakhshi
Wheat is the dominant cereal crop constituting the first staple food in Iran. This paper studies the energy consumption patterns and the relationship between energy inputs and yield for Wheat production in Iranian agriculture during the period 1986 – 2008. The results indicated that total energy inputs in irrigated and dryland wheat production increased from 29.01 and 9.81 GJ ha -1 in 1986 to 44.67 and 12.35 GJ ha -1 in 2008, respectively. Similarly, total output energy rose from 28.87 and 10.43 GJ ha -1 in 1986 to 58.53 and 15.77 GJ ha -1 in 2008, in the same period. Energy efficiency indicators, input– output ratio, energy productivity, and net energy have improved over the examined period. The results also revealed that non- renewable, direct, and indirect energy forms had a positive impact on the output level. Moreover, the regression results showed the significant effect of irrigation water and seed energies in irrigated wheat and human labor and fertilizer in dryland wheat on crop yield. Results of this study indicated that improvement of fertilizer efficiency and reduction of fuel consumption by modifying tillage, harvest method, and other agronomic operations can significantly affect the energy efficiency of wheat production in Iran.
小麦是主要的谷类作物,是伊朗的第一主食。本文研究了1986 - 2008年伊朗农业小麦生产的能源消耗模式以及能源投入与产量的关系。结果表明:灌地和旱地小麦生产总能量投入分别从1986年的29.01和9.81 GJ ha -1增加到2008年的44.67和12.35 GJ ha -1;同样,在同一时期,总输出能量从1986年的28.87和10.43 GJ ha -1上升到2008年的58.53和15.77 GJ ha -1。能源效率指标、投入产出比、能源生产率和净能源在审查期间有所改善。结果还表明,不可再生能源、直接能源和间接能源形式对产出水平有积极影响。此外,回归结果还表明,灌溉水和种子能以及旱地小麦的人力和肥料对作物产量有显著影响。本研究结果表明,通过改变耕作方式、收获方式和其他农艺操作来提高肥料效率和降低燃料消耗,可以显著影响伊朗小麦生产的能源效率。
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引用次数: 5
An Application of the Two-Regime Threshold Vector Error Correction Model to Analyze Asymmetric Price Transmission of Milk in Zanjan Province of Iran - 两区阈值矢量误差修正模型在伊朗赞詹省牛奶价格不对称传导分析中的应用
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.159562
Moharram Ainollahi, M. Ghahremanzadeh
In this paper asymmetric price transmission mechanism and nonlinear adjustment between producer and retail prices of milk were examined in Zanjan Province of Iran. For this purpose, a Two-Regime Threshold Vector Error Correction Model (TVECM) and a Sup-LM Test developed by Hansen and Seo (2002) were employed for checking presence of a threshold effect. Application of unit root tests indicated that both wholesale and retail prices are I (1), and Johansen test verified cointegration of the series in the long-run. Results of the Sup-LM test confirmed threshold adjustment of product price towards the long-run equilibrium. Furthermore, results obtained from TVECM revealed that the coefficient of ECT is significant only in the first regime of retailing equation implying that retailers significantly respond to the decreasing deviations from the long-run equilibrium. While adjustment coefficient is not significant for wholesale equation in both regimes to imply that there is not significant inclination to react to deviations from the long-run equilibrium among the wholesalers despite the retailers.
本文研究了伊朗赞詹省牛奶生产者和零售价格之间的非对称价格传导机制和非线性调整。为此,采用Hansen和Seo(2002)开发的双域阈值矢量误差校正模型(TVECM)和supm - lm测试来检查阈值效应的存在。单位根检验表明,批发价格和零售价格都是I (1), Johansen检验在长期内验证了序列的协整性。supm检验的结果证实了产品价格对长期均衡的阈值调整。此外,从TVECM中获得的结果表明,ECT系数仅在零售方程的第一阶段是显著的,这意味着零售商对偏离长期均衡的减少有显著的反应。而调整系数对于批发方程在两种制度下都不显著,这意味着尽管有零售商,批发商之间对偏离长期均衡的反应没有显著的倾向。
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引用次数: 0
A Measure of Pastoralist Women’s Vulnerability to the Impact of Seasonality: Evidence from Nigeria 衡量牧民妇女对季节性影响的脆弱性:来自尼日利亚的证据
Pub Date : 2015-09-01 DOI: 10.5455/ijamd.1209
S. Aderinoye-Abdulwahab, J. J. Chimgonda-Nkhoma
This paper examines factors that predispose pastoralist women to social and environmental vulnerability and how the women cope with their livelihoods when their husbands relocate with cattle during dry season. The paper adopts a case study research design to select Kwara State of Nigeria where focus groups discussions and interviews were held to elicit information. It was found that food insecurity, low incomes, seasonal changes, conflict, and culture deter women from sustaining a well-being. The study recommends that organisations and policy makers should capitalise on indigenous knowledge when designing measures to reduce people’s vulnerability as this would enhance their livelihood sustainability.
本文研究了使牧民妇女易受社会和环境脆弱性的因素,以及当她们的丈夫在旱季带着牛迁移时,妇女如何应对生计。本文采用案例研究设计,选择尼日利亚夸拉州,焦点小组讨论和访谈举行,以引出信息。研究发现,粮食不安全、低收入、季节变化、冲突和文化阻碍了妇女维持幸福生活。该研究建议,组织和政策制定者在设计减少人们脆弱性的措施时应该利用土著知识,因为这将增强他们生计的可持续性。
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引用次数: 2
Factor Analysis of Agricultural Development Indicators from Iranian Agriculture Experts’ Viewpoints - 伊朗农业专家视角下的农业发展指标因子分析
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.173812
M. S. Sabouri, M. Solouki
Agriculture and its development is the foundation of development in Iran as a developing country. So, it can be regarded as the foundation for economical and social development. The capabilities of agriculture sector are limited and its efficiency is trivial because of neglecting agricultural development and keeping its support just as a slogan. The trans- formation of agriculture to a developed, dynamic, efficient environment depends not only on appropriate climate and natural resources but also on human resource development in the relevant sector. The main purpose of the present research was to study and recognize agricultural development indicators from agriculture experts’ viewpoints (including researchers, trainers and extension experts) in six provinces in Iran on the basis of Adjacent Provinces Plan. The study was designed with three phases of theoretical foundations, field operations and data analysis. The statistical population was 863 experts, out of which 198 experts were selected by stratified sampling. The validity and reliability of measurement tool (questionnaire) was analyzed by SPSS software package. The study was a correlation-descriptive study in which factor analysis statistics was used in addition to descriptive statistics. Experts grouped indicators of future agricultural development in nine groups (access to inputs, application of technologies for the development of human resource and sustainability; reduction of losses; economical development; improvement of infrastructures; agricultural mechanization; social status; improvement of marketing; land reform; yield increase). Results about the difference in respondents’ viewpoints revealed significant differences in experts’ viewpoints in six studied province about relevant variables and in their viewpoints about the components of agricultural development (infrastructure improvement, marketing, optimum management and sustainability, human resource development and economical development).
农业及其发展是伊朗作为一个发展中国家发展的基础。因此,它可以被视为经济和社会发展的基础。由于对农业发展的忽视和对农业的支持只是一个口号,农业部门的能力是有限的,效率是微不足道的。将农业转变为一个发达的、有活力的、高效的环境,不仅取决于适当的气候和自然资源,还取决于相关部门的人力资源开发。本研究的主要目的是在伊朗邻省计划的基础上,从农业专家(包括研究人员、培训人员和推广专家)的角度研究和识别伊朗六个省的农业发展指标。研究分为理论基础、现场作业和数据分析三个阶段。统计人口为863名专家,其中分层抽样抽取198名专家。采用SPSS软件包对测量工具(问卷)的效度和信度进行分析。本研究为相关-描述性研究,除描述性统计外,还采用了因子分析统计。专家们将未来农业发展指标分为九组(获得投入、应用技术促进人力资源发展和可持续性;减少损失;经济发展;改善基础设施;农业机械化;社会地位;营销改进;土地改革;产量增加)。调查结果显示,6个省区专家对相关变量的看法以及对农业发展要素(基础设施改善、市场营销、优化管理和可持续性、人力资源开发和经济发展)的看法存在显著差异。
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引用次数: 0
Effective factors on women role in sustainable development (case study: Marvdasht rural areas in Iran). 影响妇女在可持续发展中作用的有效因素(案例研究:伊朗马夫达什特农村地区)。
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.164895
S. N. Mousavi
This paper aims to study the role of women in agricultural promotion and its effect on rural development. Research method in this study was based on a survey and the required information was collected through questionnaire from a sample of women especially rural women. The data were analyzed using Logit model. The results showed that women had a major role in farming including producion, conservation, and destructing. The results also showed that women had a great tendency for participating in extension classes to improve their knowledge for sustainable development. Considering the results, it was necessary to provide the life facilities and necessities, awareness women especially rural women with group media and organizing the promotional and educational classes for reaching the sustainable development.
本文旨在研究妇女在农业促进中的作用及其对农村发展的影响。本研究的研究方法以调查为基础,通过问卷调查的方式对妇女特别是农村妇女进行调查。采用Logit模型对数据进行分析。结果表明,妇女在农业生产、保护和破坏方面发挥着重要作用。结果还表明,妇女参加扩展班以提高可持续发展知识的倾向很大。考虑到结果,有必要提供生活设施和必需品,提高妇女特别是农村妇女的认识,并组织促进和教育课程,以实现可持续发展。
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引用次数: 0
Cropping Pattern and Comparative Advantage of Agricultural Products in Ilam Province 伊拉姆省农产品种植格局与比较优势
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.175988
R. E. Samani, A. Poursaeed
In this study, the comparative advantage of main agricultural products and its relation to cropping pattern was studied in Ilam Province. For data analyzing the comparative advantage and government policies effects indices, Policy Analysis Matrix (PAM) were used. The obtained results for the comparative advantage indices of Domestic Resource Cost (DRC), Social Cost Benefit (SCB) and Net Social Profitability (NSP) show that production of irrigated wheat, dry-farming wheat and dry-farming barely has not comparative advantage in Ilam Province but the production of irrigated barely, corn, dry-farming pea, dry-farming lentil, watermelon, cucumber and tomato have comparative advantage in Ilam Province. In addition, the obtained results for NPIC index show the Nominal Government Protection of inputs in all products. Also, Nominal Protection Coefficient index indicated that nominal market protection of products like wheat (irrigated and dry-farming) and barely (irrigated and dry-farming) was positive and those of other products were negative and the Effective Protection Coefficient for wheat and barley had the highest values. The results showed that the existing cropping pattern was not allotted with comparative advantage but is related to the effective protection coefficient
本文对伊拉姆省主要农产品的比较优势及其与种植方式的关系进行了研究。采用政策分析矩阵(PAM)对比较优势和政府政策效应指标进行数据分析。国内资源成本(DRC)、社会成本效益(SCB)和净社会盈利能力(NSP)比较优势指标的结果表明,灌溉小麦、旱作小麦和旱作小麦生产在伊拉姆省不具有比较优势,而灌溉小麦、玉米、旱作豌豆、旱作扁豆、西瓜、黄瓜和番茄生产在伊拉姆省具有比较优势。此外,所得的NPIC指数结果显示了所有产品投入的名义政府保护。名义保护系数指数表明,小麦(水旱作)和小麦(水旱作)等产品的名义市场保护为正,其他产品的名义市场保护为负,小麦和大麦的有效保护系数最高。结果表明,现有的种植方式并不具有比较优势,而是与有效防护系数有关
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引用次数: 3
Sustainable Management of Saravan Sylvan Park Using Stochastic Dynamic Programming 基于随机动态规划的Saravan森林公园可持续管理
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.163981
S. Shirzadi, M. Sabouhi, R. E. Kenari
The present study sustainable management of Guilan Saravan Sylvan Park was planned. The used method in the form of decision support model in three10-year period was studied for parks of various states and with considering the economic, ecological and social criteria during the years 2008 to 2038. By using hierarchical fuzzy analysis method, the reaching to an optimal level of economic, ecological and social simultaneously and as their combined utility values in various periods, decisions and different states of park is obtained. The results showed that in order to reach to an optimal level of purposes simultaneously, at the beginning of the first 10-year period implementation of ecological decision, at the beginning of the second 10 years period in three considered states for the Sylvan Park implementation of social, ecological and ecological decisions give the most combined utility value of purposes respectively. Results of stochastic dynamic programming showed that implementing the ecological decisions at the beginning of the first 10-year period, implementing the ecological decision by considering the second designed state of park at the beginning of the second 10-year period, and by applying the first designed state of park at the beginning of third 10-year-old period, the implementation of social decisions is desirable to achieve sustainable management in Saravan Sylvan Park. According to the findings, the implementation of these determined decisions can be useful and maximum of desirable use from Park potentials in the economic, social - recreational and conservation and sustainability of indigenous species problems, and reposit the park to the next generation with the best condition.
本研究对桂兰萨拉万森林公园的可持续管理进行了规划。以2008 - 2038年为研究对象,考虑经济、生态和社会标准,以决策支持模型的形式对3个10年期间的国家公园进行了研究。运用层次模糊分析方法,得出经济、生态、社会三者同时达到最优水平,并作为它们在公园不同时期、决策和不同状态下的综合效用值。结果表明:为了同时达到最优的目的水平,在森林公园实施社会、生态和生态决策的第一个10年期初和第二个10年期初三种考虑状态下,分别给出了最大的目的综合效用值。随机动态规划结果表明,在第一个10年期初实施生态决策,在第二个10年期初考虑公园的第二设计状态实施生态决策,在第三个10年期初应用公园的第一设计状态实施社会决策,是实现Saravan森林公园可持续管理的理想选择。根据研究结果,实施这些确定的决策可以最大限度地利用公园在经济,社会,娱乐和本地物种保护和可持续发展方面的潜力,并以最佳条件将公园交还给下一代。
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引用次数: 1
Regression Analysis of Innovation Management in Processing and Complementary Industries of Livestock Products 畜产品加工与互补产业创新管理的回归分析
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.200107
A. Ommani
The purpose of research was analysis of innovation management in processing and complementary industries of livestock products. The method of research was correlative descriptive. The statistical population of this study was all managers in processing and complementary industries of livestock products of Khouzestan Province (N=486). The sampling method was stratified random sampling. The sample size was a (n=125). A questionnaire was developed to gather information regarding innovation management in processing and complementary industries of livestock products. Data collected were analyzed using the Statistical Package for the Social Sciences (SPSS). According to the results, the correlation between innovation management with participation in special course, accountability, risk taking, tend to be creative, competitiveness, attitude to innovation management and obtained credit was significant. Based on regression analysis participation in special course, accountability, risk taking, tend to be creative, competitiveness and attitude to innovation management may well explain for 42.9% changes (R 2 =0.429) in level of innovation management. According to path analysis, competitiveness and attitude to innovation management were the most important variables influencing the innovation management.
研究的目的是分析畜产品加工与互补产业的创新管理。研究方法为相关描述性。本研究统计人群均为胡齐斯坦省畜产品加工及配套产业的管理人员(N=486)。抽样方法为分层随机抽样。样本量为a (n=125)。编制了一份调查问卷,以收集有关畜产品加工和互补产业创新管理的信息。收集的数据使用社会科学统计软件包(SPSS)进行分析。结果显示,创新管理与专业课程参与、问责、承担风险、创新倾向、竞争力、创新管理态度和获得学分之间存在显著的相关关系。基于回归分析,专业课程参与、问责、承担风险、创新倾向、竞争力和创新管理态度可以很好地解释42.9%的创新管理水平变化(R 2 =0.429)。通过路径分析发现,竞争力和创新管理态度是影响企业创新管理的最重要变量。
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引用次数: 0
Identifying the Barriers of Sustainable Agriculture Adoption by Wheat Farmers in Takestan, Iran 确定伊朗塔吉克斯坦小麦种植者采用可持续农业的障碍
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.175275
S. Kheiri
Conventional agriculture systems of production often lead to environmental degradation, economic problems and even social conflict. The efficacy of agriculture systems conducive to the economic, environmental and social sustainability of farming operations has been demonstrated, yet the adoption of sustainable agricultural practices is not widespread. This study evaluates the barriers of sustainable agriculture by wheat farmers in Takestan using a descriptive–correlation survey methodology. This quantitative study was based on a Researcher made questionnaire designed to elicit the barriers to adoption of sustainable agriculture practices perceived by a sample of 149 wheat farmers in the Takestan (N=268), through a stratified random sampling technique. Instrument validity was confirmed by a panel of experts. The reliability estimated by Cronbach’s coefficient (α=0.905). The data has been analyzed using the SPSS (16). The results revealed that the high cost of sustainable agriculture was the most important barriers in its implementation (M=4.74). The findings of multiple regressions explained that farmer’s attitudes and practices of sustainable agriculture explained 89 percent of the variance of the barriers of sustainable agriculture. Farmer’s attitudes had the most influence on the determination of the barriers of sustainable agriculture (β=0.775).
传统的农业生产系统往往导致环境退化、经济问题甚至社会冲突。有利于农业经营的经济、环境和社会可持续性的农业系统的功效已得到证明,但采用可持续农业做法的情况并不普遍。本研究使用描述性相关调查方法评估了竹斯坦小麦农民可持续农业的障碍。本定量研究基于研究者制作的问卷,旨在通过分层随机抽样技术,找出Takestan (N=268) 149名小麦农户认为的采用可持续农业实践的障碍。仪器的有效性由一个专家小组确认。采用Cronbach系数估计信度(α=0.905)。数据已使用SPSS(16)进行分析。结果表明,可持续农业的高成本是其实施的最大障碍(M=4.74)。多元回归的结果解释了农民对可持续农业的态度和实践解释了可持续农业障碍方差的89%。农民的态度对可持续农业壁垒的确定影响最大(β=0.775)。
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引用次数: 10
Major Barriers to Application of Good Agricultural Practices (GAPs) Technologies in Sustainability of Livestock Units 在畜牧业可持续性中应用良好农业规范(gap)技术的主要障碍
Pub Date : 2015-09-01 DOI: 10.5455/IJAMD.161640
Marzieh Panahzadeh Parikhani, F. R. Borkhani, H. S. Fami, Naser Motiee, A. Hosseinpoor
The main purpose of this study was to investigate the major barriers to application of Good Agricultural Practices (GAPs) technologies in sustainability of livestock by ranchers of Meshkinshahr. A sample of 120 farmers was selected by using proportional random sampling method. Data were collected by means of a questionnaire. Validity of questionnaire was determined through Agricultural Jihad exports of Meshkinshahr County and some faculty members at University of Tehran, Department of Agricultural Management and Development. Cronbach’s alpha was used to estimate the reliability. The reliability was found to be acceptable. The results of Factor Analysis showed that infrastructure barriers, informational- educational barriers, institutional-support barriers, personal barriers, economical barriers were the five barriers to application of Good Agricultural Practices (GAPs) technologies in livestock unites. These factors explained 67.23 percent of the total variance.
本研究的主要目的是调查Meshkinshahr牧场主在牲畜可持续性方面应用良好农业规范(gap)技术的主要障碍。采用比例随机抽样方法,选取120名农户进行调查。通过问卷调查的方式收集数据。问卷的效度是通过Meshkinshahr县的农业圣战出口和德黑兰大学农业管理与发展系的一些教员来确定的。采用Cronbach’s alpha估计信度。可靠性被认为是可以接受的。因子分析结果表明,基础设施障碍、信息教育障碍、制度支持障碍、个人障碍和经济障碍是影响畜牧单位良好农业规范技术应用的五大障碍。这些因素解释了总方差的67.23%。
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引用次数: 11
期刊
International Journal of Agricultural Management and Development
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