Food Policy最新文献

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Drivers of state legislative actions restricting foreign holdings of U.S. agricultural land 各州立法行动限制外国人持有美国农业用地的推动者
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-12 DOI: 10.1016/j.foodpol.2025.102859
Lin Lin, David L. Ortega
{"title":"Drivers of state legislative actions restricting foreign holdings of U.S. agricultural land","authors":"Lin Lin,&nbsp;David L. Ortega","doi":"10.1016/j.foodpol.2025.102859","DOIUrl":"10.1016/j.foodpol.2025.102859","url":null,"abstract":"<div><div>Foreign holdings of U.S. agricultural land have raised national and food security concerns. These concerns have been reflected in the significant amount of state legislative actions that seek to restrict foreign holdings of U.S. agricultural land in recent years. While there has not been clear evidence of the negative impacts of such foreign holdings, these restrictive legislations could deprive immigrants’ residential rights or lead to unintended economic consequences. This naturally leads to the question: what are the factors driving these controversial state legislative actions? This study informs this important issue by investigating factors predicting state legislators’ bill proposals and voting behavior. We then conduct an analysis at the state level, accounting for the sequential nature of state-level activity, which allows us to further capture the impacts of state agricultural and China-related characteristics. Results suggest that while protecting state agricultural assets is part of the consideration, these state legislative actions are also responding to national security concerns raised by China-related incidents in recent years.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102859"},"PeriodicalIF":6.8,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143935945","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Corrigendum to “Role of nutrition-sensitive agriculture in enhancing sustainable humanitarian assistance: Evidence from orange-fleshed sweetpotato interventions in Kenya” [Food Policy 132 (2025) 102834] “营养敏感型农业在加强可持续人道主义援助中的作用:肯尼亚橙皮甘薯干预措施的证据”的勘误表[粮食政策132 (2025)102834]
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-08 DOI: 10.1016/j.foodpol.2025.102884
Chalmers K. Mulwa , Fred Grant , Marcel Gatto , Mukani Moyo , Dorcas Amunga , Norman Kwikiriza , Jack Malit , Julius J. Okello , Joyce Maru , Hugo Campos , Simon Heck
{"title":"Corrigendum to “Role of nutrition-sensitive agriculture in enhancing sustainable humanitarian assistance: Evidence from orange-fleshed sweetpotato interventions in Kenya” [Food Policy 132 (2025) 102834]","authors":"Chalmers K. Mulwa ,&nbsp;Fred Grant ,&nbsp;Marcel Gatto ,&nbsp;Mukani Moyo ,&nbsp;Dorcas Amunga ,&nbsp;Norman Kwikiriza ,&nbsp;Jack Malit ,&nbsp;Julius J. Okello ,&nbsp;Joyce Maru ,&nbsp;Hugo Campos ,&nbsp;Simon Heck","doi":"10.1016/j.foodpol.2025.102884","DOIUrl":"10.1016/j.foodpol.2025.102884","url":null,"abstract":"","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102884"},"PeriodicalIF":6.8,"publicationDate":"2025-05-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143917783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Avian influenza, egg prices, and policies balancing biosecurity and animal welfare in poultry production 禽流感、鸡蛋价格以及平衡家禽生产中的生物安全和动物福利的政策
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-05 DOI: 10.1016/j.foodpol.2025.102882
H. Holly Wang, David L. Ortega
{"title":"Avian influenza, egg prices, and policies balancing biosecurity and animal welfare in poultry production","authors":"H. Holly Wang,&nbsp;David L. Ortega","doi":"10.1016/j.foodpol.2025.102882","DOIUrl":"10.1016/j.foodpol.2025.102882","url":null,"abstract":"","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102882"},"PeriodicalIF":6.8,"publicationDate":"2025-05-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143904071","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Food system interventions in urban environments: Integrating simulation models and stakeholder solutions 城市环境中的粮食系统干预:整合模拟模型和利益相关者解决方案
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102878
Tom X. Hackbarth , Julian May , Peter H. Verburg
{"title":"Food system interventions in urban environments: Integrating simulation models and stakeholder solutions","authors":"Tom X. Hackbarth ,&nbsp;Julian May ,&nbsp;Peter H. Verburg","doi":"10.1016/j.foodpol.2025.102878","DOIUrl":"10.1016/j.foodpol.2025.102878","url":null,"abstract":"<div><div>Food systems operate across multiple dimensions and scales and often display inflexibility. This is shaped by, amongst other aspects, fragmented political accountability, competing priorities and power imbalances with actors from ‘big food’ industries in a dominant role. To explore potential leverage points of local policy, we analyse the effects of different food system interventions on food and nutrition security in an urban case study combining an integrated food system model with insights from stakeholder consultation. Through a process involving stakeholder assessment and co-design of intervention plans that are tested in a spatial Bayesian network food system model, we analyse the level of convergence between local perspectives and quantitative modelling results. Our findings highlight the reciprocal benefits of integrating qualitative and quantitative approaches in mitigating existing biases. The approach proposed in this study has shown promise in developing targeted, effective, and actionable local policy plans potentially reducing the probability of unhealthy household diets by up to 8%. Our findings reveal that effective interventions in our case study of Worcester, a secondary city in South Africa, require tailoring to neighbourhood-specific needs. While nutrition aid programs and community initiatives benefit the entire city, disparities in access to infrastructure and services highlight the need for targeted solutions.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102878"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143891254","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Global shocks and local sellers: Kenyan fertilizer markets’ response to the fuel-fertilizer-food price crisis 全球冲击与当地卖家:肯尼亚肥料市场对燃料-肥料-食品价格危机的反应
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102889
Hanna S. Willwerth , Colleta N. Khaemba , Teresa Serra , Hope C. Michelson , Pieter Rutsaert , Jason Donovan
{"title":"Global shocks and local sellers: Kenyan fertilizer markets’ response to the fuel-fertilizer-food price crisis","authors":"Hanna S. Willwerth ,&nbsp;Colleta N. Khaemba ,&nbsp;Teresa Serra ,&nbsp;Hope C. Michelson ,&nbsp;Pieter Rutsaert ,&nbsp;Jason Donovan","doi":"10.1016/j.foodpol.2025.102889","DOIUrl":"10.1016/j.foodpol.2025.102889","url":null,"abstract":"<div><div>Global fertilizer prices doubled during the 2020–2022 fuel-fertilizer-food crisis, pushing an additional 210 million people into acute food insecurity. We use transaction-level data from agro-dealers to analyze how this global shock transmitted through Kenyan retail markets. How global price shocks spread across rural markets to affect firms and farmers in low-income countries remains poorly understood. We show that retail fertilizer prices in Kenya rose 81% on average during the crisis, with remarkable spatial variation ranging from 5% decreases to 138% increases across shops. We use dyadic panel analysis to identify changes in price transmission and in market integration across Kenyan fertilizer retailers and to evaluate the effects of government policy intervention. We find evidence of asymmetric price transmission; agro-dealer prices responded faster to import price increases than decreases. We show that larger shops and major agricultural production zones experienced faster price transmission and stronger integration with import markets relative to high-poverty areas. Kenya’s National Fertilizer Subsidy Program slowed price transmission but may have prolonged higher fertilizer retail prices. Our results imply that farmers do not benefit as rapidly from input price reductions as they would under symmetric transmission. Our results also demonstrate that global shocks transmit unevenly across markets, suggesting effective stabilization policies should account for heterogeneity in market conditions and variable pass-through behavior.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"133 ","pages":"Article 102889"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144212799","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Cultivating collaboration through joint participation: Evidence from a video-based nutrition-sensitive agricultural extension program in Ethiopia 通过共同参与培养合作:来自埃塞俄比亚基于视频的营养敏感型农业推广项目的证据
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102883
Sophia Friedson-Ridenour , Rachael Pierotti , Emily Springer , Alemgena Gebreyohannes
{"title":"Cultivating collaboration through joint participation: Evidence from a video-based nutrition-sensitive agricultural extension program in Ethiopia","authors":"Sophia Friedson-Ridenour ,&nbsp;Rachael Pierotti ,&nbsp;Emily Springer ,&nbsp;Alemgena Gebreyohannes","doi":"10.1016/j.foodpol.2025.102883","DOIUrl":"10.1016/j.foodpol.2025.102883","url":null,"abstract":"<div><div>Micronutrient deficiency, or hidden hunger, remains a significant problem affecting more than two billion people globally. Nutrition-sensitive agriculture (NSA) is recommended as a means of ensuring that investments in agriculture also translate into nutritional gains. NSA is a multisectoral approach that requires coordination and cooperation across what are often gendered domains of control inside and outside of the home. In Ethiopia, agriculture is usually treated as men’s domain and nutrition women’s, with programming generally targeting recipients based on their assumed domain of control. Using evidence from a study of a video-based NSA program in Ethiopia, this article provides an in-depth qualitative examination of if and why targeting both men and women with NSA information is preferred by female and male farmers. Findings indicate that the participation of men and women within the same household not only reduces inequalities in access to information but also changes whether and how conversations about household production and consumption happen. Household investments in NSA often involve risk-taking and may require the labor of both men and women. NSA interventions that provide information to both women and men ease information sharing frictions, including those related to intrahousehold gender inequality, and encourage consensus building and the joint assessment of potential benefits and risks. The findings from this study indicate that dual targeting is important for the promotion of NSA and addressing micronutrient deficiency because of the potential benefits related to intrahousehold collaboration.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102883"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143894647","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fertilizer, soil health, and economic shocks: A synthesis of recent evidence 肥料、土壤健康和经济冲击:最近证据的综合
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102892
Kibrom A. Abay , Jordan Chamberlin , Pauline Chivenge , David J. Spielman
{"title":"Fertilizer, soil health, and economic shocks: A synthesis of recent evidence","authors":"Kibrom A. Abay ,&nbsp;Jordan Chamberlin ,&nbsp;Pauline Chivenge ,&nbsp;David J. Spielman","doi":"10.1016/j.foodpol.2025.102892","DOIUrl":"10.1016/j.foodpol.2025.102892","url":null,"abstract":"<div><div>Most countries, at all stages of development, adopt policies to improve agricultural productivity through the application of inorganic fertilizer and the management of soil health. Unfortunately, global and local economic shocks can quickly erode the impact of these policies, as was evident during the global food, fuel, and fertilizer price crisis that began in 2020. This paper synthesizes recent evidence on the magnitude and distribution of—and responses to— the recent shocks to international fertilizer markets, building on evidence from this Special Issue of <em>Food Policy</em> and other recent contributions to the literature. The available evidence suggests that although international fertilizer prices increased dramatically in 2020–2022 and remained above their pre-COVID-19 pandemic level through 2024, the medium-term effects on global fertilizer demand were relatively modest. However, global aggregates obscure important short-term effects, including reduced fertilizer use and lower farm profits in smallholder production systems in many low- and middle-income countries. Although these effects varied considerably by country, dependence on fertilizer imports and vulnerability to idiosyncratic domestic shocks likely played a key role in driving these effects. The evidence synthesized in this paper reveals varying responses (across countries and farmers) and patterns of price transmission (across local and international markets) while also highlighting the potential of fertilizer subsidy programs and other policy interventions to mitigate the effects of fertilizer price volatility and improve soil health, particularly in the midst of a climate crisis that adds uncertainty to agricultural production. From a longer-term perspective, much research is still needed to unpack the effects of this crisis—and the possible effects of future crises—on the international transmission of fertilizer price shocks, policy response options to both immediate shocks and more protracted threats, farm-level strategies to increase resilience to these shocks and to encourage more judicious fertilizer use and soil health management.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"133 ","pages":"Article 102892"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144106302","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Leveraging agricultural production organizations to reduce fertilizer use: Evidence from China 利用农业生产组织减少化肥使用:来自中国的证据
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102891
Meng Xu , Xiaoxi Wang , Kevin Chen
{"title":"Leveraging agricultural production organizations to reduce fertilizer use: Evidence from China","authors":"Meng Xu ,&nbsp;Xiaoxi Wang ,&nbsp;Kevin Chen","doi":"10.1016/j.foodpol.2025.102891","DOIUrl":"10.1016/j.foodpol.2025.102891","url":null,"abstract":"<div><div>Smallholder-dominated agriculture in China faces severe fertilizer overuse due to fragmented land, limited mechanization, and low adoption of advanced agricultural technologies. Agricultural production organizations (e.g., family farms, agricultural cooperatives, and agricultural enterprises), characterized by their relatively large scale and advanced agricultural practices, are considered potential solutions for promoting more sustainable practices. This study investigates whether and how different agricultural production organization forms are associated with fertilizer use in China. Linking detailed business registry data with county-level panel data, we find that agricultural enterprises and cooperatives are associated with reductions in fertilizer use at the county level, while family farms do not show a significant relationship. Agricultural mechanization and land consolidation are potential channels through which agricultural enterprises and cooperatives are linked to these reductions. Further analysis with household survey data suggests associations between these two types of organizations and reductions in smallholders’ fertilizer inputs through agricultural services. Heterogeneity analysis indicates that agricultural enterprises have a more pronounced effect in areas with extensive land transfer, advanced fertilization techniques, and in the eastern and plain regions of China. Agricultural cooperatives, benefiting from their unique governance structure, consistently show negative associations with fertilizer use regardless of land transfer, fertilization techniques, and topography constraints. Our findings provide insights into pathways for transitioning smallholder farming toward sustainable agriculture.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"133 ","pages":"Article 102891"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144116361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Smallholder farming, fertilizer use, and the polycrisis period: Cross-country evidence from longitudinal surveys in Sub-Saharan Africa 小农农业、化肥使用和多重危机时期:撒哈拉以南非洲纵向调查的跨国证据
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-05-01 DOI: 10.1016/j.foodpol.2025.102885
Akuffo Amankwah , Alemayehu Ambel , Sydney Gourlay , Talip Kilic , Yannick Markhof , Philip Wollburg
{"title":"Smallholder farming, fertilizer use, and the polycrisis period: Cross-country evidence from longitudinal surveys in Sub-Saharan Africa","authors":"Akuffo Amankwah ,&nbsp;Alemayehu Ambel ,&nbsp;Sydney Gourlay ,&nbsp;Talip Kilic ,&nbsp;Yannick Markhof ,&nbsp;Philip Wollburg","doi":"10.1016/j.foodpol.2025.102885","DOIUrl":"10.1016/j.foodpol.2025.102885","url":null,"abstract":"<div><div>Smallholder agriculture continues to be the main source of livelihood for a large portion of Sub-Saharan Africa’s population. In recent years, compounding crises and shocks have threatened this livelihood basis. How did smallholder farmers in Sub-Saharan Africa fare throughout this period? What measures did they take to cope with the repeated disruption to their farming activities? We address this knowledge gap using nationally representative, cross-country comparable longitudinal microdata collected from over 16,000 agricultural households in six Sub-Saharan African countries between 2018 and 2024. While overall fertilizer adoption remained relatively stable, we find considerable cross-country heterogeneity and poorer households to be more likely to have discontinued fertilizer use. At the intensive margin, 47% of farmers could not access their desired quantity of fertilizer. On average, these farmers used less than half as much inorganic fertilizer as they desired with affordability being the main constraint. Households adopted a range of coping strategies, some of which may compromise productivity and heighten future vulnerability.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"133 ","pages":"Article 102885"},"PeriodicalIF":6.8,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071117","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Use of recycled phosphorus products in organic farming in EU member states: Theoretically supported but practically restricted 欧盟成员国在有机农业中使用再生磷产品:理论上支持,但实际上受到限制
IF 6.8 1区 经济学
Food Policy Pub Date : 2025-04-30 DOI: 10.1016/j.foodpol.2025.102881
S. Magaya , M. Reimer , G.S. Metson , T-S. Neset , M. Torralba , C.J.E. Schulp
{"title":"Use of recycled phosphorus products in organic farming in EU member states: Theoretically supported but practically restricted","authors":"S. Magaya ,&nbsp;M. Reimer ,&nbsp;G.S. Metson ,&nbsp;T-S. Neset ,&nbsp;M. Torralba ,&nbsp;C.J.E. Schulp","doi":"10.1016/j.foodpol.2025.102881","DOIUrl":"10.1016/j.foodpol.2025.102881","url":null,"abstract":"<div><div>Organic farming policies and guidelines actively promote sustainable farming practices emphasising tighter nutrient cycles on farms and regionally. The European Union Green Deal aims to increase organic farmland to 25% and has triggered more discussion about nutrient supply challenges in organic farming, including propositions to allow the use of more recycled phosphorus products. Via a pivotal regulatory shift, struvite was allowed for use in organic farming in 2023 but dynamics involved in adoption of this recycled P product into organic farming are not understood. This study explores the influence of policy, technology, and financial instruments on the availability, accessibility, and adoption of wastewater-based struvite in organic farming.We use a qualitative multi-methods approach and adopt a systems perspective to explore the complex interplay between key sectors and the important variables in the recycled P chain. Our analysis reveals a lack of perceived P supply risk for organic farming in the European Union. Whereas the organic farming regulation is an arbiter for inputs into organic farming, adoption of recycled P products by farmers hinges on rigorous quality assurance and financial accessibility. Moreover, there are opposing views among actors on forms of policy interventions to facilitate availability and adoption of recycled P products in organic farming. However, within existing policy frameworks leverage points are present for strategic pathways to promote recycled P use in organic farming.</div></div>","PeriodicalId":321,"journal":{"name":"Food Policy","volume":"134 ","pages":"Article 102881"},"PeriodicalIF":6.8,"publicationDate":"2025-04-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143886399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"经济学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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