时间：2019年11月29日（周五）下午14：00-16：00
地点：浙江大学紫金港校区启真大厦1213室
题目一：Food Safety and the Adoption of Supply Chain Traceability: Evidence from Wholesale Market Surveys in China
报告人：梁巧，副教授
题目二：Sectoral changing patterns of China’s green GDP considering climate change: An investigation based on the economic input-output life cycle assessment model
主讲人：吴枢，博士生
题目三：气候变化对中国露地和温室蔬菜生产率的不同影响——基于市级面板数据的实证分析
主讲人：张书睿，博士生
题目一：Food Safety and the Adoption of Supply Chain Traceability: Evidence from Wholesale Market Surveys in China
报告人：梁巧，副教授
主讲人简介：梁巧，浙江大学农业经济管理系和荷兰伊拉斯姆斯大学组织管理系双博士学位，麻省理工学院访问学者，现为浙江大学公共管理学院副教授，博士生导师，主要研究方向为农业产业组织、农民合作社、农产品供应链和食品安全等。主持或参与国际、国家级和省部级多个科研项目，近五年来已出版专著和合著3本，并以第一或唯一通讯作者在Agricultural Systems, Land Use Policy, 和Agribusiness等国内外际期刊发表论文30余篇，受邀于多个国内外学术会议做口头报告。
Abstract: Food safety is a global problem with a large impact on human health and a high level of priority for governments. An important feature related to food safety is supply chain traceability, which allows problems can be traced to their source. This allows regulatory agencies to understand where risk is entering into the supply chain, and offers a major disincentive for upstream agricultural businesses intentionally introducing risk. Despite the importance of traceability, there has been little research on what factors are associated with the adoption of traceability. This paper focuses on aquatic products in China, and seeks to understand the adoption of traceability empirically, through the most extensive wholesale market surveysever conducted. From these surveys, it is shown that adoption of traceability among vendors is significantly associated with inspection intensity, their individual history of food safety problems, and risk awareness (specifically exposure to quality and safety issues as measured by their involvement inaquatic products social media groups). A theoretical model of vendor behavioris proposed to explain these observations. The goal is that this paper will offer insights into the current state of traceability in China, as well as hypotheses for how the adoption of traceability can be improved.
题目二：Sectoral changing patterns of China’s green GDP considering climate change: An investigation based on the economic input-output life cycle assessment model
主讲人：吴枢，博士生
摘要：The rapid growth of energy-intensive and high-emission industries has underpinned China’s economic boom over the past few decades. Since her economic development entered the new normal phase in 2013, China has faced the challenge of mitigating greenhouse gas (GHG) emissions while achieving medium-high economic growth. Transforming the economic development pattern and restructuring the economy is a principal solution, and one important prerequisite is discerning great sectoral disparities of GHG emissions and corresponding environmental costs because the diversity of characteristics among different sectors causes the pollutants that are discharged to vary. Hence, this paper aims to assess the environmental costs of China’s total and sectoral GHG emissions. Based on the System of Environmental and Economic Accounts and using the economic input-output life cycle assessment model, this study calculates the green GDP and green output value of 27 sectors to reflect the environmental costs of GHG emissions in China during 1991-2016. The findings are as follows: (1) while China’s direct GHG emissions increased from 3,040.60 million tons of carbon dioxide equivalent (MtCO2eq) to 10,641.10 MtCO2eq during 1991-2014, declining trends were observed in the total and 16 sectors’ direct GHG emissions in the subsequent two years; (2) although the ratios of direct GHG emissions to total GHG emissions in most sectors decreased, total GHG emissions in eight sectors rose first and then fell, and in 15 sectors continued to rise; (3) China’s green GDP grew from 2,003.88 billion Chinese Yuan to 26,245.25 billion Chinese Yuan during 1991-2016, and the difference between China’s GDP and green GDP decreased from 2.73% to 1.02%; and (4) differences between the output value and green output value decreased in over 20 sectors. Finally, some policy implications are given from the perspective of some key sectors of the Manufacturing industry, Agricultural sector, and Transport, storage, and post sector.
题目三：气候变化对中国露地和温室蔬菜生产率的不同影响——基于市级面板数据的实证分析
主讲人：张书睿，博士生
摘要：减缓和适应是减少气候变化风险的两个最重要的工具。在农业领域，温室被认为是一种主要的适应手段。本文旨在通过1990年至2017年中国城市层面的面板数据，评估气候变化对温室和露地蔬菜的不同影响，从而验证这种适应手段是否有效。为了确定温室种植的影响，本文选择全要素生产率(TFP)而不是广泛使用的产量，从而排除了投入调节的影响。本文首先利用随机前沿分析计算TFP，然后对TFP进行回归，分别估计温度变化对温室蔬菜和露地蔬菜的影响。结果表明，温室黄瓜和番茄的TFP与温度和降水量呈倒u型非线性关系，而温度和降水量对温室黄瓜和番茄的影响不显著。本文还发现，产量可能低估了气候变化对蔬菜生产的实际危害。中长期来看，在未来气候变暖和全球气候模型的影响下，中国露地蔬菜产量预计将下降22%-52%。
