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The Effect of Maximum Residue Limits on Agri-Food Trade: Evidence from Chinese Exports to the EU 最大残留限量对农业食品贸易的影响:中国对欧盟出口的证据
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-11-17 DOI: 10.30430/gjae.2023.0328
Dongpo Jiang, Xia Li, Ruiqiang Sun, Qi Li
There is debate about whether maximum residue limits (MRLs) for pesticides act as a catalyst or barrier to trade. By constructing a trade model based on heterogeneous firm quality and productivity, we show that MRLs’ net effects on total export value, the number of exporting firms, and the average export value per firm depend on the interplay between the effect on import demand and that on variable and fixed compliance costs. We employ firm-level transaction data for agri-food products exported from China to the European Union (EU). We use heterogeneity indices that combine the number and level of MRLs to measure MRL stringency between China and the EU; a Poisson pseudo-maximum-likelihood estimator with fixed effects is used for estimation. We find that stricter MRLs, whether imposed by China or the EU, promote China’s agri-food exports to the EU. However, such promotion effects are heterogeneous across agri-food-exporting firms. In China, updates to MRL standards improve agri-food-exporting firms’ ability to comply with stricter MRLs. Public investment and services help reduce compliance costs. Our findings provide new evidence that MRLs are not new non-tariff measures adopted to replace reduced import tariffs.
关于农药最高残留限量(MRL)是贸易的催化剂还是贸易壁垒的问题一直存在争议。通过构建一个基于异质性企业质量和生产率的贸易模型,我们表明,最高残留限量对出口总值、出口企业数量和每家企业平均出口值的净影响取决于对进口需求的影响与对可变和固定合规成本的影响之间的相互作用。我们采用了从中国出口到欧盟(EU)的农业食品的企业级交易数据。我们使用结合最高残留限量数量和水平的异质性指数来衡量中国和欧盟之间最高残留限量的严格程度;使用带有固定效应的泊松伪最大似然估计法进行估计。我们发现,无论是中国还是欧盟实施更严格的最高残留限量标准,都会促进中国对欧盟的农业食品出口。然而,这种促进作用在不同的农业食品出口企业之间存在差异。在中国,最高残留限量标准的更新提高了农业食品出口企业遵守更严格的最高残留限量标准的能力。公共投资和服务有助于降低合规成本。我们的研究结果提供了新的证据,证明最高残留限量标准并不是为取代降低进口关税而采取的新的非关税措施。
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引用次数: 0
Use Cases of the Integrated Administration and Control System’s Plot-Level Data: Protocol and Pilot Analysis for a Systematic Mapping Review 综合管理和控制系统的地块级数据用例:系统制图审查的协议和试点分析
4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-10-23 DOI: 10.30430/gjae.2023.0385
Heidi Leonhardt, Silke Hüttel, Tobia Lakes, Maximilian Wesemeyer, Saskia Wolff
In recent years, land use data from the EU’s Integrated Administration and Control System (IACS) have become increasingly available for research purposes. IACS data contain annual plot-level information on cultivation and location of the land farmed by agricultural beneficiaries, covering the majority of farmland in the EU. The data thus provide information on land use that is spatially and temporally highly disaggregated. Researchers from a broad range of disciplines already rely on IACS data for various applications and EU member states must make an anonymised, geospatially-referenced version of the data publicly available in the future. However, there is no complete and structured overview of the data’s use, their benefits and limitations that future research could rely on. This calls for conducting a systematic review of the applications of IACS plot-level data in scientific literature. Preparing the ground for such a review, this paper presents a review protocol for identifying and analysing publications using plot-level IACS data from Austria, Czechia, France, Germany, and Sweden in a systematic map. To test and refine the protocol and to illustrate the planned review, we conduct a pilot analysis of 12 selected academic publications and present the results. The pilot analysis demonstrates that the review protocol is adequate and that novel insights will be gained by mapping out the already existing work that uses IACS data.
近年来,来自欧盟综合管理和控制系统(IACS)的土地利用数据越来越多地用于研究目的。IACS数据包含农业受益人种植的土地的种植和位置的年度地块级信息,覆盖了欧盟的大部分农田。因此,这些数据提供了在空间和时间上高度分类的土地使用信息。来自广泛学科的研究人员已经在各种应用中依赖IACS的数据,欧盟成员国必须在未来公开提供匿名的、地理空间参考的数据版本。然而,对于这些数据的使用、它们的好处和局限性,目前还没有一个完整的、结构化的概述,未来的研究可以依赖这些概述。这就要求对IACS图级数据在科学文献中的应用进行系统的回顾。为了为这样的审查奠定基础,本文提出了一个审查方案,用于在系统地图中使用来自奥地利、捷克、法国、德国和瑞典的IACS数据来识别和分析出版物。为了测试和完善方案,并说明计划的审查,我们对12个选定的学术出版物进行了试点分析,并介绍了结果。试点分析表明,审查方案是充分的,并且通过绘制使用IACS数据的现有工作将获得新的见解。
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引用次数: 0
A Trans-Theoretical Model for Farmers’ perceived Usefulness of Digital Risk Management Tools – A Case Study from Germany 农民感知数字风险管理工具有用性的跨理论模型——来自德国的案例研究
4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-10-08 DOI: 10.30430/gjae.2023.0330
Julia B. Block, Marius Michels, Oliver Mußhoff
Digital risk management tools (RMTs) are promising to help farmers manage risk. However, these recently developed tools are still unexplored and hardly used by farmers. This study is the first to investigate how German farmers perceive the usefulness of digital RMTs and which factors influence them. A novel modification of the trans-theoretical model was made to determine farmers’ perceived usefulness gradually. The regression results show that, on average, farmers perceive digital RMTs as potentially useful. Perceptions are positively influenced by a higher level of education, full-time employment on the farm, use of mobile devices and a higher perceived importance of digital tools. The study contributes to the literature by investigating the extent to which farmers are willing to accept the combination of digitisation and risk management. The results are of interest to policy makers involved in digital agriculture and to agricultural tool providers, as they offer first insights into farmers’ acceptance of digital RMTs. Researchers benefit from the successfully applied trans-theoretical model fitting.
数字风险管理工具(rmt)有望帮助农民管理风险。然而,这些新开发的工具仍未被开发,农民很少使用。这项研究首次调查了德国农民如何看待数字rmt的有用性以及影响它们的因素。对跨理论模型进行了新的修正,以逐步确定农民感知有用性。回归结果显示,平均而言,农民认为数字rmt有潜在的用处。受教育程度较高、在农场从事全职工作、使用移动设备以及认为数字工具的重要性较高,都会对人们的看法产生积极影响。该研究通过调查农民愿意接受数字化和风险管理相结合的程度,为文献做出了贡献。这些结果对参与数字农业的政策制定者和农业工具提供商很有兴趣,因为它们首次深入了解了农民对数字rmt的接受程度。研究人员受益于跨理论模型拟合的成功应用。
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引用次数: 0
Public Agricultural Extension, Pest and Disease Experience, and Adoption of Improved Wheat Varieties 公共农业推广、病虫害经验和改良小麦品种的采用
4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-08-23 DOI: 10.30430/gjae.2023.0350
Xin Wang, Yanping Song, Wei Huang
Improved varieties are considered critical for increasing crop yields worldwide. This study explored the effects of public agricultural extension and pest and disease experience on adoption of improved varieties using survey data on 525 wheat farmers in Anhui Province, China, to which the Heckman sample selection model was applied. The results showed that public agricultural extension had a significant positive relationship with adoption of improved varieties. Demonstration and training, as different forms of agricultural extension, both increased the probability of farmers adopting improved varieties, but only demonstration had a marked effect on degree of adoption. Pest and disease experience increased the probability of adoption of improved varieties by farmers and significantly enhanced the effect of public agricultural extension, but did not affect degree of adoption. Further analysis using an endogenous switching regression model revealed that adoption of improved varieties raised wheat yields by around 337.83 kg/ha. Public agricultural extension should thus be strengthened, especially for farmers with pest and disease experience, and a diversified, well-functioning agricultural extension system should be provided.
改良品种被认为对提高全球作物产量至关重要。本研究利用安徽省525个小麦农户的调查数据,应用Heckman样本选择模型,探讨了公共农业推广和病虫害经验对改良品种采用的影响。结果表明,公共农业推广与良种采用呈显著正相关。示范和培训作为不同的农业推广形式,都增加了农民采用良种的可能性,但只有示范对采用程度有显著影响。病虫害经验增加了农民采用改良品种的概率,显著提高了公共农业推广的效果,但不影响采用程度。利用内源切换回归模型进一步分析表明,采用改良品种可使小麦产量提高约337.83公斤/公顷。因此,应加强公共农业推广,特别是对有病虫害经验的农民,并应提供多样化、运作良好的农业推广系统。
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引用次数: 0
The National and Regional Impact of the EU Bioeconomy Strategies on the Agri-Food Sector: Insights from Germany 欧盟生物经济战略对农业食品部门的国家和地区影响:来自德国的见解
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-05-17 DOI: 10.30430/gjae.2023.0274
Y. Jafari, Linmei Shang, A. Kuhn, T. Heckelei
The bioeconomy strategy of the European Union aims to balance three distinct goals: food security, the sustainable use of renewable resources for industrial purposes, and environmental protection. This study uses an integrated computable general equilibrium model to simulate the impacts of selected elements of the EU bioeconomy strategy on German agriculture at national and regional level up to 2050. An improved productivity of the crop sector substantially increases production and export/import ratio of crop outputs and reduces crop prices, while only moderately expanding cropland. The improved crop productivity would help to reduce the competition for resources between non-food and food biomass use as well as between crop and livestock production. An increasing conversion efficiency of agricultural biomass for use in biorefineries alone is unlikely to have a significant impact on the German bioeconomy. Overall, the results suggest the need for further efforts to improve crop productivity and effective complementary measures supporting the development of transformative technologies and changes in consumer preferences to ensure a minimum level of biomass use in the chemical sector.
欧盟的生物经济战略旨在平衡三个不同的目标:食品安全、工业目的可再生资源的可持续利用和环境保护。本研究使用一个集成的可计算一般均衡模型来模拟欧盟生物经济战略的选定要素在国家和地区层面对德国农业的影响,直至2050年。作物部门生产力的提高大大提高了作物产量和出口/进口比,降低了作物价格,而只是适度地扩大了耕地。作物生产力的提高将有助于减少非粮食和粮食生物量利用之间以及作物和牲畜生产之间对资源的竞争。仅仅提高用于生物精炼厂的农业生物质的转化效率不太可能对德国生物经济产生重大影响。总体而言,研究结果表明,需要进一步努力提高作物生产力,并采取有效的补充措施,支持发展变革性技术和改变消费者偏好,以确保化学部门的生物质利用达到最低水平。
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引用次数: 1
Nitrogen Surplus Displays a Spurious Environmental Kuznets Curve in Germany 德国氮肥过剩表现出一条伪环境库兹涅茨曲线
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-05-15 DOI: 10.22004/AG.ECON.315111
Bente Castro Campos, M. Petrick
We examine the relationship between nitrogen surplus per hectare and the median monthly wage per capita considering the Environmental Kuznets Curve (EKC) theory. The EKC hypothesizes an inverse U-shape relationship between environmental pollution and per capita income. We use a novel panel data set for nitrogen surplus as an environmental pollutant and a measure of the median monthly wage per capita during the period from 1999 to 2018 for 401 counties in Germany. Our estimation results show that nitrogen surplus displays a spurious EKC in Germany. It is spurious because the inverse U-shape relationship of nitrogen surplus and median wage is rejected by almost all model specifications and by tracing of individual county paths. This implies that in Germany economic growth has not cleaned up the environmental damage from nitrogen surplus. The affected counties remain in a spatial cluster (shown with the individual county paths) that they cannot break out of in the course of the EKC, at least not without political intervention.
本文利用环境库兹涅茨曲线(EKC)理论研究了每公顷氮肥剩余量与人均月工资中位数之间的关系。EKC假设环境污染与人均收入之间呈反u型关系。我们使用了一个新的面板数据集,将氮过剩作为一种环境污染物,并测量了德国401个县1999年至2018年期间的人均月工资中位数。我们的估计结果表明,氮盈余在德国表现出虚假的EKC。这是虚假的,因为几乎所有的模型规格和单个县的路径追踪都拒绝了氮剩余和工资中位数的反u型关系。这意味着,在德国,经济增长并没有消除氮过剩对环境造成的破坏。受影响的县仍然处于一个空间集群中(用个别县的路径显示),它们无法在EKC过程中脱颖而出,至少在没有政治干预的情况下是这样。
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引用次数: 0
Nitrogen Surplus Displays a Spurious Environmental Kuznets Curve in Germany 德国氮肥过剩表现出一条伪环境库兹涅茨曲线
4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-05-15 DOI: 10.30430/gjae.2023.0241
Bente Castro Campos, Martin Petrick
We examine the relationship between nitrogen surplus per hectare and the median monthly wage per capita considering the Environmental Kuznets Curve (EKC) theory. The EKC hypothesizes an inverse U-shape relationship between environmental pollution and per capita income. We use a novel panel data set for nitrogen surplus as an environmental pollutant and a measure of the median monthly wage per capita during the period from 1999 to 2018 for 401 counties in Germany. Our estimation results show that nitrogen surplus displays a spurious EKC in Germany. It is spurious because the inverse U-shape relationship of nitrogen surplus and median wage is rejected by almost all model specifications and by tracing of individual county paths. This implies that in Germany economic growth has not cleaned up the environmental damage from nitrogen surplus. The affected counties remain in a spatial cluster (shown with the individual county paths) that they cannot break out of in the course of the EKC, at least not without political intervention.
本文利用环境库兹涅茨曲线(EKC)理论研究了每公顷氮肥剩余量与人均月工资中位数之间的关系。EKC假设环境污染与人均收入之间呈反u型关系。我们使用了一个新的面板数据集,将氮过剩作为一种环境污染物,并测量了德国401个县1999年至2018年期间的人均月工资中位数。我们的估计结果表明,氮盈余在德国表现出虚假的EKC。这是虚假的,因为几乎所有的模型规格和单个县的路径追踪都拒绝了氮剩余和工资中位数的反u型关系。这意味着,在德国,经济增长并没有消除氮过剩对环境造成的破坏。受影响的县仍然处于一个空间集群中(用个别县的路径显示),它们无法在EKC过程中脱颖而出,至少在没有政治干预的情况下是这样。
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引用次数: 0
Economic and Agronomic Impacts of Agrivoltaics on Arable Land Use at the Example of the Stuttgart Region 农业发电对耕地利用的经济和农艺影响——以斯图加特地区为例
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-05-11 DOI: 10.30430/gjae.2023.0334
Christian Sponagel, A. Feuerbacher, Dan Bendel, T. Weber, E. Bahrs
Photovoltaics and wind energy must be considerably expanded to achieve the targeted climate neutrality in Germany in 2045 which may cause new conflicts. Especially ground-mounted photovoltaic systems, which are often associated with a high land consumption rate, conflict with other land uses such as agriculture. Due to the simultaneous electricity generation and agricultural use, agrivoltaics (AV) systems can increase land use efficiency which is why they are in the political focus. In this study, we go beyond the limited point-wise analyses of previous studies which have focused mainly on the technology itself and potential yield changes of individual crops and provide a spatially explicit analysis of the AV potential. This is done by an in-depth analysis on the example of arable land in the Stuttgart Region, one of the most important conurbations in Germany and Europe. The study focusses on the resulting agronomic effects in the region and the associated agro-economic effects. The analysis is carried out with an integrated land use model that optimises arable land use by maximising gross margins at the farm level. Legal framework conditions such as the regional plan are considered constraints, and existing studies on yield effects under AV are used. The results show that there are synergies through increases in the agricultural gross margins. These synergies could be realized on about 3% of arable land in the study region subject to the underlying assumptions made. With more than 10% of the arable land in the study region used for AV, the average gross margins in arable farming decrease by about 280 € per ha of AV. Farms or areas with a high share of special crops, such as strawberries, demonstrate the highest profitability. On the other hand, regions with a high share of root crops in the crop rotation seem to be less favourable to establish AV. This demonstrates that, the agricultural land use structure must be considered in the holistic assessment of the land use efficiency of AV installations. Our results help policymakers better assess the effects of AV on land use and are useful for identifying priority implementation areas, for instance, in regional or land use plans.
为了在2045年实现德国的气候中和目标,必须大幅扩大光伏和风能的使用,这可能会引发新的冲突。特别是地面安装的光伏系统,它通常与高土地消耗率有关,与农业等其他土地用途相冲突。由于同时发电和农业使用,农业发电(AV)系统可以提高土地利用效率,这就是为什么它们成为政治焦点。在这项研究中,我们超越了以往研究中有限的逐点分析,这些研究主要集中在技术本身和单个作物的潜在产量变化上,并提供了AV潜力的空间明确分析。这是通过对斯图加特地区(德国和欧洲最重要的城市之一)可耕地的深入分析来完成的。研究的重点是该地区的农艺效应和相关的农业经济效应。该分析是通过综合土地利用模型进行的,该模型通过最大化农场一级的毛利率来优化耕地利用。法律框架条件(如区域规划)被视为约束条件,并使用了AV下产量影响的现有研究。结果表明,通过提高农业毛利率存在协同效应。根据所做的基本假设,这些协同效应可以在研究区域约3%的可耕地上实现。研究区域超过10%的耕地用于AV,每公顷AV的平均毛利率减少约280欧元。种植特殊作物(如草莓)比例较高的农场或地区显示出最高的盈利能力。另一方面,轮作中块根作物占比高的地区似乎不太有利于建立AV。这表明,在综合评估AV设施的土地利用效率时,必须考虑农业土地利用结构。我们的研究结果有助于决策者更好地评估AV对土地利用的影响,并有助于确定优先实施领域,例如在区域或土地利用计划中。
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引用次数: 0
Der Markt für Fleisch und Fleischprodukte 2022/2023 2022/2023肉类产品市场
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-28 DOI: 10.30430/gjae.2023.5.fleisch
J. Efken, Jakob Meemken, Rebecca Derstappen, A. Thies
Die Entwicklung der verschiedenen globalen Fleischmärkte war im Jahr 2022 wie im allgemeinen öffentlichen Diskurs geprägt von der Thematik Energiekrise und daraus resultierenden Kostensteigerungen. Daneben beeinflussten Seuchen wie die Afrikanische Schweinepest (ASP) und die Geflügelpest weiterhin das Marktgeschehen. Die globale Rindfleisch- wie auch Geflügelfleischerzeugung wuchs 2022 nur geringfügig. Dem stand eine starke Nachfrage gegenüber, so dass auch das Jahr 2022 insgesamt von einem hohen internationalen Preisniveau geprägt war. Trotz nachlassender internationaler Nachfrage nach Schweinefleisch – insbesondere chinesischer Importeure – verteuerte sich Schweinefleisch ebenfalls aufgrund gestiegener Erzeugungskosten. In der EU sank die Schweinefleischerzeugung 2022 markant um 5 % gegenüber 2021. Auch die Rind- und Geflügelfleischerzeugung sank leicht während hier Fleischimporte um ein Viertel zunahmen. In der Summe stagnierte in der EU der Fleischverbrauch. Der deutsche Markt war 2022 von starken Erzeugungsrückgängen bei Rind- und Schweinefleisch geprägt, die mit ebensolchen Nachfragerückgängen verbunden waren. Die Geflügelfleischproduktion und -nachfrage war eher konstant.
2022年,全球各种肉类市场的演变和公共辩论一样深受能源危机和由此产生的成本增加所困扰。在市场的同时,可以在诸如非洲病毒和禽流感这类病毒的影响方面发挥最大的作用。2022年全球牛肉园以及家禽园的产量都增长不大2022年将会是国际物价水平高涨的一年。尽管国际猪肉需求(特别是中国进口商)有所下降,但猪肉由于产能上升而变得昂贵。欧盟的回锅量自2021年起下降了5%。同样,由于肉类进口又增加了四分之一,家畜和家禽肉类的食量也略有下降。在欧盟,肉类消费停滞不前。在2022年,德国市场的主要是基于猪肉和牛肉生产的急速下降,这些急速下降与需求相同。家禽肉类的产量和需求量一直稳定。
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引用次数: 0
Der Markt für Milch und Milcherzeugnisse 2022 (2022年牛奶牛奶市场
IF 0.5 4区 经济学 Q4 AGRICULTURAL ECONOMICS & POLICY Pub Date : 2023-04-12 DOI: 10.30430/gjae.2023.5.milch
Greta Langer, Clara Mehlhose, Tim Knöpfel, Bernhard Brümmer, A. Spiller, G. Busch
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引用次数: 0
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German Journal of Agricultural Economics
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