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The multiple roles of crop structural change in productivity,nutrition and environment in China:A decomposition analysis

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Journal of Integrative Agriculture 2024年第5期23卷 1763-1773页

作者： Xiangyang Zhang Yumei Zhang shenggen fan College of Economics and Management China Agricultural UniversityBejing 100083China Academy of Global Food Economics and Policy China Agricultural UniversityBejing 100083China

China's crop structure has undergone significant changes in the last two decades since 2000,with an increase in the share of cereals,vegetables,and fruit,squeezing out other crops.As a result,land productivity,nutrient supply,and carbon emissions have changed.How to reallocate limited farmland among crops to achieve the multiple goals of agrifood systems becomes an important issue.This study explores the sources of land productivity and nutrition supply growth and carbon emissions reduction,and identifies the multiple roles of crop structural change from 2003 to 2020 based on a decomposition analysis.The results reveal that the growth within crops is still the primary driver in land productivity and nutrition supply and the reduction in carbon emissions.However,structural change also plays various roles at different periods.From 2003 to 2010,crop structural change increased the total calorie supply but lowered land productivity and contributed at least 70%of the total growth of carbon emissions.The crop structure was relatively stable,and their effects were modest from 2010 to 2015.From 2015 to 2020,the crop structural change began to play a greater role and generate synergistic effects in improving land productivity,micronutrient supply,and reducing carbon emissions,contributing to approximately a quarter of the growth of land productivity and 30%of total carbon emissions reduction.These results suggest that strategies for crop structural change should comprehensively consider its multiple impacts,aiming to achieve co-benefits while minimizing trade-offs.

关键词： crop structural change land productivity nutrition carbon emissions

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Repositioning fertilizer manufacturing subsidies for improving food security and reducing greenhouse gas emissions in China

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Journal of Integrative Agriculture 2024年第2期23卷 430-443页

作者： Zongyi Wu Xiaolong Feng Yumei Zhang shenggen fan Academy of Global Food Economics and Policy China Agricultural UniversityBeijing 100083China College of Economics and Management China Agricultural UniversityBeijing 100083China

China removed fertilizer manufacturing subsidies from 2015 to 2018 to bolster market-oriented reforms and foster environmentally sustainable practices.However,the impact of this policy reform on food security and the environment remains inadequately evaluated.Moreover,although green and low-carbon technologies offer environmental advantages,their widespread adoption is hindered by prohibitively high costs.This study analyzes the impact of removing fertilizer manufacturing subsidies and explores the potential feasibility of redirecting fertilizer manufacturing subsidies to invest in the diffusion of these technologies.Utilizing the China Agricultural University Agri-food Systems model,we analyzed the potential for achieving mutually beneficial outcomes regarding food security and environmental sustainability.The findings indicate that removing fertilizer manufacturing subsidies has reduced greenhouse gas(GHG)emissions from agricultural activities by 3.88 million metric tons,with minimal impact on food production.Redirecting fertilizer manufacturing subsidies to invest in green and low-carbon technologies,including slow and controlled-release fertilizer,organic-inorganic compound fertilizers,and machine deep placement of fertilizer,emerges as a strategy to concurrently curtail GHG emissions,ensure food security,and secure robust economic returns.Finally,we propose a comprehensive set of government interventions,including subsidies,field guidance,and improved extension systems,to promote the widespread adoption of these technologies.

关键词： food security fertilizer manufacturing subsidies agri-food systems greenhouse gas emissions

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Transforming agri-food systems for multiple wins in nutrition,inclusion and environment

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Journal of Integrative Agriculture 2024年第2期23卷 355-358页

作者： shenggen fan Qiran Zhao Jingjing Wang Academy of Global Food Economics and Policy/College of Economics and Management China Agricultural UniversityBeijing 100083China

The call for agri-food system transformation is urgent in many global development agendas(UN 2023).Food systems have contributed to economic prosperity and feeding the world,but they are also associated with numerous challenges,including climate change,continued hunger,poor diets and malnutrition,and increasing disparities(Webb et al.2020;fanzo et al.2021).

关键词： continued nutrition urgent

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The potential impact of increased whole grain consumption among Chinese adults on reducing healthcare costs and carbon footprint

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Journal of Integrative Agriculture 2024年第8期 2842-2852页

作者： Xin Zhang Jingjing Wang Fuli Tan Haixiu Gao shenggen fan Academy of Global Food Economics and Policy China Agricultural University

Excessive consumption of refined grains harms human health and ecosystem viability.Whole grains, as a healthy and sustainable alternative to refined grains, can benefit individual health by providing dietary fiber, B vitamins,and bioactive substances.Additionally, they aid in improving the environment due to their higher extraction rate and lower carbon emission during the processing stage.However, few studies have attempted to evaluate the economic and social benefits of increasing the amount of whole grain in grain intake.This paper estimates the potential savings in healthcare costs and reduced food carbon footprints (CFs) that could result from a shift toward whole grain consumption following the Chinese Dietary Guidelines (CDG).We investigate hypothetical scenarios where a certain proportion (5–100%) of Chinese adults could increase their whole grain intakes as proposed by CDG to meet the average shortfall of 30.2 g.In that case, the healthcare costs for associated diseases (e.g., type2 diabetes mellitus (T2DM), cardiovascular disease (CVD), and colorectal cancer (CRC)) are expected to reduce by a substantial amount, from USD 2.82 to 56.37 billion; the carbon emission levels are also projected to decrease by0.24–5.72 million tons.This study provides compelling evidence that advocating for the transition towards greater consumption of whole grain products could benefit individual health, the environment, and society, by reducing both healthcare costs and carbon emissions.

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TRANSFORMING CHINESE FOOD AND AGRICULTURE:A SYSTEMS PERSPECTIVE

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Frontiers of Agricultural Science and Engineering 2023年第1期10卷 4-15页

作者： Ting MENG shenggen fan Academy of Global Food Economics and Policy(AGFEP) College of Economics and ManagementChina Agricultural UniversityBeijing 100083China

After decades of development,China has made significant progress in ensuring national food security.However,the country currently faces multiple challenges,including the double burden of malnutrition,i.e.,micronutrient deficiencies and overweight/obesity,climate change,resource stress and environmental degradation,and an increasingly complex global market.This paper reviews past developments in food and agriculture,and offers initial insights into transforming the Chinese food system for achieving multiple national development goals using a systems approach.Strategies and solutions from China can also inform the design and implementation of food system transformation in other emerging economies.

关键词： food systems food security nutrition climate change

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FACTORS INFLUENCING FOOD-WASTE BEHAVIORS AT UNIVERSITY CANTEENS IN BEIJING,CHINA:AN INVESTIGATION BASED ON THE THEORY OF PLANNED BEHAVIOR

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农业科学与工程前沿:英文版 2023年第1期10卷 83-94页

作者： Hao fan Jingjing WANG Xiaotong LU shenggen fan Academy of Global Food Economics and Policy College of Economics and ManagementChina Agricultural UniversityBeijing 100083China

Food waste is a major social problem that contributes to the overutilization of natural resources,affecting economic progress and environmental protection.Food waste occurs throughout the whole process of the food supply chain,especially during the consumption stage.As a special group of consumers,the emerging adults at university may have unique food consumption patterns and their food waste behavior in university canteens deserves more attention.To understand the influential factors of the food-waste behavior of students in university canteens,a field survey was conducted at China Agricultural University canteen with 705 respondents.Based on the theory of planned behavior,this paper examines the influencing factors of student food-waste behavior from three dimensions:sociopsychological factors,individual characteristics and dining factors.The results indicate that the percentage of students who waste food is relatively low,at roughly 27%.Perceived behavior control,gender,monthly living expenses,BMI,mealtime,meal expectations and food portion were significantly correlated with student food-waste behavior,among which perceived behavior control had the most prominent correlation,followed by food portion.Behavioral intention,household location and palatability were not significantly correlated with student food-waste behavior.Therefore,it is necessary to promote publicity and education on reducing food waste on campus,reinforce the administration of the department of support service,and optimize the food portion in the canteen.

关键词： university students food waste behavior theory of planned behavior university canteen

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FOOD SYSTEMS TRANSFORMATION:CONCEPTS,MECHANISMS AND PRACTICES

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Frontiers of Agricultural Science and Engineering 2023年第1期10卷 1-3页

作者： shenggen fan Ting MENG Academy of Global Food Economics and Policy(AGFEP) College of Economics and ManagementChina Agricultural UniversityBeijing 100083China

The global food systems face significant interrelated and complex challenges,including climate change,extreme weather events,natural resource depletion,biodiversity loss,emerging plant and animal diseases,conflict and trade shocks.The number of global populations that lacked access to adequate food sharply increased during the COVID-19 pandemic.It is estimated that in 2021,about 702 million to 828 million people around the world suffer from hunger,with an increase of 150 million people alone due to the outbreak of the global COVID19 pandemic[1].Reduced incomes,food price inflations and continued supply chain disruptions will lead to even more severe and widespread increases in global food insecurity if urgent action is not taken,affecting vulnerable households in almost every country.

关键词： sharply continued extreme

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Feeding More People on an Increasingly Fragile Planet: China's Food and Nutrition Security in a National and Global Context

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Journal of Integrative Agriculture 2014年第6期13卷 1193-1205页

作者： shenggen fan Joanna Brzeska International Food Policy Research Institute

Developing and developed countries alike are increasingly facing the dififcult question of how to feed more people amidst a host of emerging demographic, environmental, and health challenges. At the same time, in addition to food quantity, increased attention is being given to food quality attributes, in particular nutrition and safety. This is especially evident in China, where concerns are on the rise regarding the ability of China’s food production systems to deliver nutritious and safe food to a growing, urbanizing and more aflfuent population. These food and nutrition concerns come at a time when China is an increasingly inlfuential actor within the global food security network through activities such as production, consumption and trade. We argue that China has the opportunity to increase food and nutrition security both nationally and globally through a comprehensive policy agenda that focuses on institutional reforms, investments for and in agriculture, productive social safety nets, mutually beneifcial trade, and the exchange of know-how and technologies among developing countries and donors. This agenda will help China adapt its food production systems to the changing face of agriculture and to play a vital role in addressing the emerging challenges facing food and nutrition security within and beyond China in the coming decades.

关键词： food security nutrition China agricultural development

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Sustainable intensification of agriculture is key to feeding Africa in the 21st century

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Frontiers of Agricultural Science and Engineering 2020年第4期7卷 366-370页

作者： shenggen fan College of Economics and Management China Agricultural UniversityBeijing 100083China

Africa in facing numerous challenges in the 21st century in feeding its rapidly increasing population.Land resources have become limited due to urbanization and industrialization.The existing agricultural land has been degraded and soil fertility has declined due to unsustainable farming practices.Despite of progress made in the past several decades,hunger and malnutrition in Africa still hinder health,human development and economic growth,which will become even worse in the future if proper measures are not taken.Sustainable intensification is the only solution to tackling both environmental sustainability including climate change and malnutrition,i.e.,to produce more foods in terms of nutrients human body needs with less natural resources and carbon emissions.To achieve this vision,innovations in technologies,policies and institutions are essential.The Chinese experience in Agricultural Green Development(AGD)can be shared with Africans when the region is pursuing its sustainable intensification strategy.

关键词： Africa,sustainable intensification Agricultural Green Development climate change malnutrition

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大食物观下我国食物供求均衡的挑战与对策

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华中农业大学学报（社会科学版） 2024年第2期 1-9页

作者：樊胜根田旭龙文进中国农业大学经济管理学院/全球食物经济与政策研究院北京100083

过去几十年,我国食物供求关系发生了重大改变,粮食安全观念也逐步从传统的注重口粮安全过渡到注重数量、营养和可持续发展等多目标的大食物安全观。在大食物观下,未来我国食物供求均衡面临诸多挑战,包括:食物结构性短缺、食物自给率下降... 详细信息

过去几十年,我国食物供求关系发生了重大改变,粮食安全观念也逐步从传统的注重口粮安全过渡到注重数量、营养和可持续发展等多目标的大食物安全观。在大食物观下,未来我国食物供求均衡面临诸多挑战,包括:食物结构性短缺、食物自给率下降;食物供求空间错位,食物消费在不同人群之间差异明显;生态和水土资源制约不断加强,可持续生产能力亟需提高;膳食结构不合理,营养不良、营养过剩以及微量营养素缺乏问题并存;现有政策体系不适应大食物观的需要等。为应对以上挑战,需要全方位利用国土资源、多渠道开发食物来源,改革政府补贴支持政策,引导多元食物产业发展。同时要加强食育教育和宣传,推动建立健康导向型的多元膳食模式;政府要建立跨部门的协调机制,加强多元化食物供给统计与评估。

关键词：大食物观粮食安全食物安全食物供求膳食转型

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