浅析海洋管理理事会对海洋渔业的认证

世界渔业资源状况持续得不到有效改善,养护问题日益成为全球关注的热点之一。在此背景下,非政府组织通过对渔业认证,引导消费者的购买行为,以鼓励渔业的养护与可持续利用。作为一种非政府组织,海洋管理理事会自成立以来逐步形成了一套相对完善的认证体系。研究分析,近年来海洋管理理事会认证的渔业数量大幅度增加,已达近120个,未来还将继续增加;从数量上看,海洋管理理事会认证在发达国家认可度越来越高;但对已经衰退的渔业以及数据不充分的渔业、底拖网渔业等认证方面,海洋管理理事会仍需改善。对我国而言,国内渔业不可能申请海洋管理理事会认证,但其认证标准可为国内渔业管理提供参考。从事公海生产的远洋渔业企业,如我国金枪鱼公司,则可通过申请海洋管理理事会认证以进一步拓展和巩固发达国家市场。     

基于超效DEA模型的泛珠三角区第一产业生产效率评价

运用超效DEA模型对泛珠三角区第一产业效率进行评价.研究结果显示广东省第一产业生产效率最高;分年度广东省第一产业Malmquist生产率指数及分解指标表明,2001-2004技术进步平均增长率达到了1.78％;1999-2003的规模效率平均增长率达到3.12％;1999-2010的纯技术效率平均增长率达到3.37％.对泛珠三角区内其他各省第一产业发展提出了相应建议.     

加入世界贸易组织对我国畜牧产业的影响

加入世界贸易组织会给我国畜牧业带来一系列的影响 ,在生产方面会削弱我国畜产品生产固有的比较优势 ;在畜产品加工方面除了肉类畜产品深加工的比重低之外 ,我国的肉类加工食品结构也不合理 ;在市场方面则更是面临着外来产品的严重冲击。如何看待入世给我国畜牧产业带来的影响和采取何种应对措施是必须考虑的问题。笔者试图在这些方面进行分析和探讨。     

非洲猪瘟疫情对生猪产业链上市公司市场价值的影响研究

[目的] 研究旨在应用实证方法分析非洲猪瘟疫情对生猪产业链上市公司市场价值造成的影响,进而得出疫情对生猪产业链上养殖、屠宰、加工、消费等环节利益相关者收益的影响。[方法]采用事件研究法,选取涉及生猪产业链上市公司,按主营业务统计为肉制品加工、养殖、饲料和兽药4种类型的32家相关上市公司,通过设计指标对生猪产业链上市公司股票异常收益率波动进行计算和检验。[结果]研究结果表明：非洲猪瘟疫情事件对生猪养殖行业的影响最大;对兽药行业的影响周期最长;肉制品加工行业的影响程度和周期仅次于兽药行业,对饲料行业的影响最小。[结论] “非洲猪瘟”事件对猪产业链上的饲料、养殖、肉制品加工、兽药类上市公司市场价值存在显著的负面影响。     

社会资本和金融认知对农户融资行为的影响

社会资本体现农户社会关系和交往能力,金融认知反映农户金融信息获取和加工能力。结合陕西农户家庭调查数据,运用Logit模型实证考察社会资本和金融认知对农户融资行为的影响,以期剖析农户融资行为差异性的内在机理。结果表明:友缘社会资本促进农户融资,而亲缘社会资本抑制农户融资,金融政策认知有利于农户融资,而金融便利认知阻碍农户融资。另外,户主年龄对融资行为的影响呈倒"U"型,其拐点在52岁。为此,应着力于培育农户社会资本,宣传金融知识并提高金融支农力度。     

农户生计资本研究现状及展望

自20世纪90年代以来,贫困人口的生计问题备受国内外学者关注;研究农户生计资本结构对解决和缓解贫困问题,帮助农户抵御各类风险具有重要的作用和意义。通过回顾并梳理国内外有关农户生计资本的研究重点及领域,总结了各研究阶段常用的方法,对研究方向进行了展望。     

海南热带花卉产业现状调查报告

海南省花卉市场发展动态、走向,公司和主要种植品种情况、销售情况及现阶段主要存在问题等。录调查信息,最后对发展海南花卉产业中存在的问题提出了建议,花卉产业的生产、贸易、消费的现状进行描述,并对我国花卉产业发展前景进行分析。     

农业引进技术消化吸收模型及其演化仿真

对于农业技术的引进,必须综合考虑技术应用地区的经济发展状况、市场规模以及其他影响技术消化吸收的要素.农户人力资本均等程度较高但均值较低的地区应引进应用难度系数较低的中间技术或者原始技术;人力资本均值较高且方差较大的地区则应引进应用难度系数较大的尖端技术或者先进技术.农业引进技术消化吸收的进程取决于农业技术扩散,而农业技术扩散同时受两种效应影响,即学习效应和研发推动效应.在学习效应推动下,对于农户人力资本方差较大的经济,在技术扩散早期扩散速度较快,而在技术扩散后期则扩散速度较慢.另一方面,在研发推动下,对于人力资本方差较小的经济,技术扩散较快.     

Price cointegration in spatial markets: An application to milkfish markets in Taiwan

Abstract

The objectives of this study are to analyze the interdependent behavior of lead‐lag milkfish price adjustments between vertically‐related markets (from production to consumption) as well as between five major horizontally‐related wholesale markets. Empirical results show that there is a two‐way lead‐lag cointegrating price relationship between milkfish wholesale and retail markets. Since the fish wholesale market cannot completely and quickly assimilate the retail market information, the speed of response of wholesale prices to retail price changes is relatively slow, inducing low pricing efficiency. The Taipei wholesale market appears to cause the greatest leadership impact on the milkfish price formation compared to other wholesale markets in both the long‐run and short‐run. The results also reveal that there is a high degree of integration relationship between the horizontally integrated wholesale markets (Chiayi, Changhwa and Taichung) for milkfish in the southwestern region within a short distance.     

Dynamics of Integration between Chinese and International Waste Paper Markets

ABSTRACT

China is the largest importer of waste paper in the world and is highly dependent on the international market. Thus, the relationship between Chinese and international waste paper markets affects the supply of fiber materials in China’s paper industry. This study examined the dynamic relationship between the two markets and the impact of newly implemented policies on both markets. We used unit root tests, cointegration test, vector error correction model (VECM) and frequency-domain Granger causality test to investigate the integration between Chinese and international waste paper markets and identify which of the two markets is the price leader. The results revealed that the two markets were integrated after controlling for structural breaks, and the Chinese market acted as the price leader. Since the supply of waste paper and wood pulp is insufficient in China to meet the fiber demand of the paper industry, waste paper import restrictions have significantly affected the supply of fiber materials in China’s paper industry. Therefore, the Chinese government should fully consider the benefit of market integration and make full use of international waste paper resources to satisfy the large domestic demand for paper products.