JIA 2018农经文章推荐 JIA's Papers on Agricultural Economics&Management
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2019 新年伊始，回顾2018年，Journal of Integrative Agriculture (JIA) 在审稿专家、作者、读者的大力支持下，已顺利完成12期出刊，盘点2018年发表的论文，有重大研究成果的详细报道，有学术前沿的热点分析，亦有最新成果的首次发现。小编汇总了JIA 2018年农经栏目重点推荐文章，研究涵盖气候变化、农业生产、农产品贸易等热点问题；稿源覆盖美国、德国、英国、新西兰、澳大利亚、荷兰、伊朗和巴基斯坦等诸多国家，国际化程度达到81%。欢迎相关科研人员惠存。长按识别二维码可获取PDF全文。
伊朗Shiraz University, Vahid Karimi团队/
Vahid Karimi, Shiraz University, Iran
Climate change and agriculture: Impacts and adaptive responses in Iran
The impacts of climate change on agriculture are still shadowed with uncertainty. However, climate change is expected to adversely affect Iran's agricultural practices through changes in precipitation, temperature and carbon dioxide fertilization. Therefore, adaptation of this sector to the increasing weather events is imperative. This study is aimed to document the likely impacts of climate change on Iran's agriculture and the current adaptation efforts made by government and farmers. The review of literature shows that changes in rainfall and water endowments will have significant impacts on crop yield, crops' water requirements and income and welfare of farm families. The extent of the changes in yield depends on the crop type, assumptions related to the CO2 fertilization effect, climate scenarios and adaptation abilities. On adaptation, the government's efforts have been distinguished in the improving agricultural productivity and irrigation development based on current technology, developing new technologies and policy reforms. Farmers' adaptive responses have also been identified. Some conclusions and recommendations are offered to increase the adaptive capacity of farmers and reduce negative impacts of climate change.
Cite this article:
Vahid Karimi, Ezatollah Karami, Marzieh Keshavarz. Climate change and agriculture: Impacts and adaptive responses in Iran. Journal of Integrative Agriculture, 2018, 17(01): 1-15.
中国农业科学院, 王济民研究员团队/
WANG Ji-min, Chinese Academy of Agricultural Sciences, China
One size fits all? Contract farming among broiler producers in China
不参加契约农业对小农不利吗？——以中国肉鸡养殖户为例
Contract farming has been increasingly found to benefit smallholders in developing countries, yet much less is known about its role in the poultry industry where economies of scale could be more prominent. This study aims to narrow this gap by analysing the choice of contract farming among Chinese broiler producers using a nationally representative survey. Simply cost-benefit analysis and multinomial logit regression modelling are jointly employed to explain contract farming decision making especially among small producers. In contrast to many recent studies, we find that small producers, though not passively excluded, usually opt out of contract farming due to limited profitability when large producers are coexistent. Such relationship is appropriately identified through a control function approach to correct for possible endogeneity. Therefore, contract farming may not help achieve higher welfare goals for small broiler producers who actually instead seek alternative market opportunities that better realise their comparative advantages.
契约农业已逐渐被认为有利于发展中国家的小散农户，但对家禽业的效果却很少研究。本文于采用全国性调查数据分析我国肉鸡养殖户选择契约农业的情况，并运用成本收益法和多元无序logit模型研究养殖户尤其是小散户的契约农业参与决策行为。研究结果发现，与规模养殖户相比，小散户虽然没有被契约农业排斥，但由于盈利空间有限，他们往往不参与契约农业，该关系通过控制函数法解决了内生性问题。因此，契约农业很可能不能给肉鸡小散户创造较高的经济效益，相反，小散户将肉鸡直接卖到市场能收到更多的经济效益。
Cite this article:
HUANG Ze-ying, XU Ying, ZENG Di, WANG Chen, WANG Ji-min. One size fits all? Contract farming among broiler producers in China. Journal of Integrative Agriculture, 2018, 17(02):473-482.
德国哥廷根大学, 于晓华教授团队/
Xiaohua Yu, University of Goettingen, Germany
Estimating the average treatment effect of adopting stress tolerant variety on rice yield in China
抗逆品种采用对中国水稻单产的平均处理效应研究
Climate extremes, characterized by droughts and floods, have become one of the major constraints to sustainable improvement of rice productivity. Variety choice, considered as one of the main adaptation measures, could help farmers reduce yield loss resulting from these extremes. Based on a three-year panel survey of 1080 Chinese rice farms in major rice producing provinces, we assume Hicksian neutral technology and employ an IV regression to estimate the average treatment effect (ATE) on rice yield for adopting stress tolerant variety, and find that farmers who adopted the stress tolerant variety on average increased rice yield by 15.5% in comparison to the non-adopters.
以干旱和洪涝为主要特征的极端气候是制约水稻生产效率提高的主要因素之一。品种选用作为稻农应对极端气候的主要适应性措施之一，有利于缓解极端气候对水稻造成减产的不利影响。本文基于2012-2014年中国水稻生产区1080份农户调研面板数据，在假定Hicksian技术中立的条件下，利用工具变量评估了抗逆品种采用对水稻单产的平均处理效应。实证结果发现，与未采用抗逆品种的稻农相比，抗逆品种采用提高了稻农15.5%的单产水平。
Cite this article:
ZHOU Jie-hong, TANG Li-qun, Xiaohua Yu. Estimating the average treatment effect of adopting stress tolerant variety on rice yield in China. Journal of Integrative Agriculture, 2018, 17(04): 940-948.
河南大学, 秦耀辰教授团队/
QIN Yao-chen, Henan University, China
Climate change and Chinese farmers: Perceptions and determinants of adaptive strategies
Farmers' perceptions, beliefs, adaptive strategies, and barriers regarding climate change are critical to promoting sustainable ecosystems and societal stability. This paper is based on an extensive survey of 1 500 farmers and their households in Henan Province in China during 2013–2014. Henan is the largest agricultural province in China with over 51 million farmers. The survey results showed that approximately 57% of the respondents perceived the direct impact of climate change during the past 10 years, with 70.3% believing that climate change posed a risk to their livelihood. Not surprisingly, most farmers reported that they have adopted new measures to mitigate the negative impacts of climate change. The main barriers hindering farmers' adopting adaptation measures were lack of funds and timely information. A multinomial logit model revealed that land ownership, knowledge of crop variety and the causes of climate change, as well as the belief of climate change, were all positively related to the likelihood of employing adaptive strategies. Moreover, the percentage of households engaging in agriculture activity, and years of engaging in farming were both negatively correlated with famer's likelihood of adopting adaptation strategies. More importantly, farmers with high incomes were less likely to adopt adaptive strategies and more willing to engage in other business activities. In conclusion, it is important to communicate climate change related information and government policies in rural areas, promote farmer associations and other educational outreach efforts to assist Chinese farmers to deal with climate change.
了解农户对气候变化的认知，信仰，适应性策略和障碍对于确保生态系统可持续和社会的稳定至关重要。河南省是中国的农业大省，农户的数量超过了5100万。2013-2014年，在河南省开展了大规模关于农户对气候变化的认知和适应性策略等问题的调查，共收集1500余份的调研问卷。分析结果显示：大约57%的受访农户已经感受到过去10年间气候变化的直接影响，70.3%的受访者相信气候变化对自己的生活造成了影响。大多数的受访者已经采取了适应性措施来减缓气候变化所造成的负面影响。另外，影响农户适应性策略的障碍主要包括缺乏资金和信息。MNL模型结果表明：农户所拥有的土地数量，作物种植品种数量，对气候变化原因了解和信任程度等因素将正向影响农户适应性策略。家庭务农比例，从事农业活动时间与农户适应性策略呈现负向的关系。重要的是，收入越高的农户越不愿意采取适应性措施，更加愿意从事其他具有高收入的经济活动。因此，在农户间进行气候变化信息和政府相关政策的宣传，以及通过农户合作组织和其它机构来协助农户积极应对气候变化十分重要。
Cite this article:
ZHAI Shi-yan, SONG Gen-xin, QIN Yao-chen, YE Xin-yue, Leipnik Mark. Climate change and Chinese farmers: Perceptions and determinants of adaptive strategies. Journal of Integrative Agriculture, 2018, 17(04): 949-963.
美国佛罗里达大学, Zhifeng Gao教授团队/
Zhifeng Gao, University of Florida, USA
Improve access to the EU market by identifying French consumer preference for fresh fruit from China
通过研究法国消费者的偏好来提高中国生鲜水果进入欧洲市场的机会
Most previous studies have investigated country-of-origin effect for agricultural products from the economically developed country, but few have focused on the impact of country-of-origin on agricultural products from economically developing countries. Using a national online survey in France, we determine French consumers' perceptions and preferences for fresh fruit from China. Results of ordered logit models show that fresh fruit from China was perceived as low quality and unsafe. Respondents who care about country-of-origin were less likely to purchase fresh fruit from China, while those who care about brand were more likely to buy Chinese fresh fruit. Risk perception and quality perception both had a significant impact on the purchase of Chinese fresh fruit. Results of latent class models obtained with key consumer demographics show that heterogeneous preferences exist among different consumer groups. The results provide critical information to both China and other economically developing countries in their efforts to improve market penetration in economically developed countries.
尽管已有大量文献研究了发达国家农产品的原产国效应，然而对发展中国家农产品的原产国效应却少有研究。本文利用法国消费者的微观调查数据，研究了法国消费者对产自中国的新鲜水果的质量感知与消费偏好。有序的Logit模型结果显示，法国消费者认为产自中国的水果整体质量与安全程度低；那些关注原产国信息的消费者更不愿意购买中国产水果，但是那些关注品牌的消费者更愿意购买中国水果；安全风险感知和质量感知对中国产水果的购买意愿都有显著影响。潜类模型也显示不同消费群体的消费偏好存在显著的异质性。本研究为中国及其他发展国家有效实施在发达国家农产品市场渗透的提供了重要信息。
Cite this article:
WANG Er-peng, Zhifeng Gao, Yan Heng. Improve access to the EU market by identifying French consumer preference for fresh fruit from China. Journal of Integrative Agriculture, 2018, 17(06): 1463-1474.
河南农业大学, 马恒运教授团队/
MA Heng-yun, Henan Agricultural University, China
What determines irrigation efficiency when farmers face extreme weather events? A field survey of the major wheat producing regions in China
极端天气下决定灌溉效率的主要因素—基于中国小麦主产区的实地调研
Water availability is a major constraint on grain production in China, therefore, improving irrigation efficiency is particularly important when agriculture faces extreme weather events. This paper first calculates irrigation efficiency with a translog stochastic frontier production function and then investigates what happens when extreme weather events occur via a Tobit model. The estimated results reveal several important features of irrigation practices: i) irrigation efficiency is lower when extreme weather events occur; ii) large variations in irrigation efficiency occur across irrigation facilities; iii) the farm plots exhibit an extreme distribution across efficiency levels; and iv) water-saving techniques, technology adoption, and the maintenance of farmers' economic resilience are major determinants of irrigation efficiency. Based on these results we propose the following recommendations: i) farmers should balance crop yield and water use; undertake relevant training programs and adopt water-saving techniques; ii) local governments and researchers should help farmers to find the optimal level of irrigation water use based on their own circumstances and provide better water-saving techniques and training programs rather than simply encouraging farmers to invest in irrigation facilities in the most extreme weather years; and iii) the income level of farm households should be increased so as to improve their resilience to natural disasters.
水资源是制约中国粮食生产的主要瓶颈，因此，当面临极端天气事件时，提高农业的灌溉效率尤其重要。本文首先利用超越对数随机前沿生产函数估计灌溉效率，然后通过Tobit模型，分析当极端天气事件发生时灌溉效率的影响因素。研究结果显示：第一，极端天气事件发生时灌溉效率较低；第二，不同灌溉设施间的灌溉效率有较大差异；第三，地块间的灌溉效率有两极分化的态势；第四，生产技术采用以及保证农民的经济收益，是提高灌溉效率的决定因素。为此，本文建议：第一，农民应该在提高产量和增加用水量之间做出合理选择，积极参加各种技术培训，采用节水灌溉技术；第二，政府和研究人员要因地制宜，帮助农民确定最佳灌溉用水量，提供更好的节水技术和培训方案，而不是简单地鼓励农民投资和维护灌溉设施；第三，增加农户的收入水平，提高农民抵御自然灾害的能力。
Cite this article:
SONG Chun-xiao, Les Oxley, MA Heng-yun. What determines irrigation efficiency when farmers face extreme weather events? A field survey of the major wheat producing regions in China. Journal of Integrative Agriculture, 2018,17(08): 1888-1899.
合肥工业大学, 王海涛教授团队/
WANG Hai-tao, Hefei University of Technology, China
Determinants of cooperative pig farmers' safe production behaviour in China – Evidences from perspective of cooperatives' services
中国合作社生猪养殖户安全生产行为的影响因素研究——基于合作社服务角度的证据
Farmers' production behaviour is a key to ensuring the safety and quality of their final products, and cooperatives play an important role in shaping that behaviour. This paper aims to explore the determinants of pig farmers' safe production behaviour, giving special focus from the perspective of cooperatives' services. This study adopted cross sectional survey data from 27 pig cooperatives and their 540 farmers in China to test the influence of cooperatives' services on farmers' safe production behaviour. The hypotheses were tested using a logit regression model. The findings indicated that although the number of services is not a key determinant of farmers' safe production behaviour, service quality matters. When a cooperative is strongly capable of involving more farmers in certain services, and provides certain services in more frequency, member farmers behave more safely. The results also show that veterinarian and pig-selling services play an important role in ensuring farmers' safe production behaviour. For this study, the quality of cooperatives' services is implied to have a positive impact on farmers' safe production behaviour. Leaders/managers of cooperatives must try to improve the quality of their services instead of merely attempting to provide a large number of services. For government officials and policy makers, designing policies that encourage cooperatives to improve their service quality is important. This research contributes to the scant literature on how cooperative services could help farmers engage in safer production behaviour, which would improve the safety of pork products in the future.
农户的生产行为是确保其生产的最终产品的安全和质量的关键因素，合作社在规范这种行为方面发挥了重要的作用。本文旨在从合作社服务的角度探讨生猪养殖户安全生产行为的决定因素。研究采用了中国27家合作社540户农户的截面数据验证合作社对农户安全生产行为的影响，并用Logit模型检验假设。结果表明合作社提供的服务的数量不是影响农户安全生产行为的关键因素，但服务的质量会显著影响农户的安全生产行为。当合作社能够将更多的农户纳入服务范围，并且更频繁地提供服务，那么农户的生产行为就更加安全。研究结果还表明，兽医和统一的生猪销售服务对保障农户的安全生产行为有着重要的作用。研究证明合作社服务的质量对农户的安全生产行为有着积极的影响，对合作社负责人来说，合作社经营过程中应该努力提高服务的质量而不仅仅是服务的数量。对政策制定者来说，应该制定相应政策鼓励合作社提高服务质量。本研究从合作社服务功能的角度弥补了目前合作社如何影响农户安全生产行为研究的不足，对提高猪肉产品的安全性有着重要的意义
Cite this article:
JI Chen, CHEN Qin, Jacques Trienekens, WANG Hai-tao. Determinants of cooperative pig farmers' safe production behaviour in China – Evidences from perspective of cooperatives' services. Journal of Integrative Agriculture, 2018,17(10): 2345-2355.
中国农业科学院, 李先德研究员团队/
LI Xian-de, Chinese Academy of Agricultural Sciences, China
The trade margins of Chinese agricultural exports to ASEAN and their determinants
中国农产品对东盟出口的贸易边际及其影响因素
How do Chinese agricultural exports to ASEAN (Association of Southeast Asian Nations) evolve? And what factors affected the evolution pattern? This study measures the trade margins of Chinese agricultural exports to ASEAN by utilizing the 2000–2015 Harmonized System's six-digit agricultural trade data, and further analyzes their determinants by developing an augmented gravity model of international trade. The results indicate that, the main growth source of Chinese agricultural exports to ASEAN has shifted from the extensive margin before the formal establishment of CAFTA (China–ASEAN Free Trade Area) in 2010 to the intensive margin since the formal establishment of CAFTA, but changes in Chinese agricultural exports to ASEAN have always mainly depended on the intensive margin. Since the formal establishment of CAFTA, the evolution pattern of Chinese agricultural exports to ASEAN has shifted from "more varieties, low price, and small quantity" to "less varieties, high price, and large quantity". Relative economic scale, relative population scale, capacity of agricultural export, trade integration, global financial crisis, and common border significantly affect the trade margins of Chinese agricultural exports to ASEAN.
中国农产品对东盟出口呈现何种演进模式？又受到哪些因素影响？本文根据UN Comtrade数据库2000-2015年HS六位编码农产品贸易数据测算了中国农产品对东盟出口贸易边际，并通过构建经过拓展的贸易引力模型进一步分析了其影响因素。结果表明，中国农产品对东盟出口增长的主要来源从中国-东盟自由贸易区（CAFTA）正式建立前的扩展边际转变为CAFTA正式建立后的集约边际，但中国农产品对东盟出口变动一直主要取决于集约边际。CAFTA正式建立以来，中国农产品对东盟出口贸易演进模式总体上从“种类多、价低、量少”转变为“种类少、价高、量大”。相对经济规模、相对人口规模、农产品出口能力、贸易整合、全球金融危机和共同边界对中国农产品出口东盟的贸易边际均具有显著影响。
Cite this article:
SUN Zhi-lu, LI Xian-de. The trade margins of Chinese agricultural exports to ASEAN and their determinants. Journal of Integrative Agriculture, 2018,17(10): 2356-2367.
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