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According to data released by the Food and Agriculture Organization of the United Nations (FAO) in 2015, there are still 795 million hungry people in the world, accounting for 10.9% of the world's population. Among them, 134 million people in China are hungry, accounting for 9.8% of the Chinese. Therefore, food security is far from being achieved in both the world and China, and it is necessary to study food security issues in order to explore ways to achieve food security. To study food security, it is first necessary to determine the criteria for food security. According to FAO's interpretation of food security, food security refers to the safety of food eaten, including quantity security, quality safety and "access" security. This book examines the quantity security and access to food while assuming food quality and safety. The data used in this book are mainly derived from the National Bureau of Statistics of China and other domestic and international organizations. Data such as Chinese, grain output, grain sown area, and agricultural water consumption are derived from the annual data of the National Bureau of Statistics; The recommended dietary intake of Chinese residents comes from the "Reference Intake of Dietary Nutrients for Chinese Residents" compiled by the Chinese Nutrition Society; The nutrient content data of various foods are derived from the "Chinese Food Composition List" compiled by the Institute of Nutrition and Food Safety of the Chinese Center for Disease Control and Prevention. China's food quantity and various international data for various purposes are obtained from the FAO database, the World Bank database (Data/The World Bank) and the Standardized World Income Inequality Database (SWIID). This book uses a combination of normative and empirical analysis methods to conduct research. Specifically, the weighted arithmetic mean method, multiple linear regression method, gray GM prediction model, BP neural network model, Logistic block growth model, exponential smoothing method and other methods are used to carry out research. The book is divided into nine chapters. Chapter 1 is an introduction, Chapters 2 to 8 are the main body of the study, and Chapter 9 is the conclusion and outlook. The research in this book is carried out along the following lines: asking questions - establishing criteria - evaluating according to standards - analyzing reasons - selecting patterns and structures - policy recommendations. The main research contents of each chapter are as follows: Chapter 1, Introduction. Briefly introduce the background of the research question and the significance of the research; Focus on the review of relevant domestic research results; define the concepts of "food" and "food security" as studied in this book; Introduce the data sources and main research methods on which the study is based; Summarize the innovations and shortcomings of the research in this book. Chapter 2 is the dietary nutrient requirements of Chinese residents. This is the most central chapter of the book. Based on the recommended dietary intake of Chinese residents, determine the per capita food ration and feed grain requirements that meet the nutritional standards, and establish quantitative standards for food security. Chapter III, Evaluation of China's Grain Quantity Security. There are still more than 100 million hungry people in China, which is enough to show the insecurity of China's food "access". Therefore, this chapter only evaluates the security of China's grain quantity, including the evaluation of the quantity and structure of grain supply. Chapter 4, Evaluation and Analysis of China's Food Safety Situation. FAO's "food security" refers not to food security but to food security. Food security and food security are inextricably linked. Therefore, this book evaluates the food security situation in China and takes four representative countries as examples to analyze the main factors affecting food security, so as to provide reference for studying China's food security issues. Chapter 5, China's grain quantity security forecast. In order to understand China's future grain quantity security, China's future per capita grain production is forecasted, and China's future grain import situation is predicted based on the results of the world's per capita grain production and grain price forecast. On this basis, the future grain quantity security situation in China is predicted. Chapter 6: Factors Influencing China's Food Security. Starting from the three major links of grain production, circulation and consumption, the main factors affecting China's food security are analyzed. Chapter 7: China's Grain Supply Model and Source Structure Selection Based on Sovereignty. In recent years, China's net grain imports have continued to increase, and its self-sufficiency rate has continued to decline. So, how much grain does China import moderately, and what level of food self-sufficiency should it maintain? To address this problem, this chapter begins with an analysis of food and the nature of the food problem, which determines China's principles for choosing food supply patterns and source structures. Secondly, it introduces the "food sovereignty" movement and its ideas that was formed in the mid-90s of the 20th century. On this basis, this paper analyzes which food supply mode and source structure China should choose, and defines the bottom line of China's economy's food self-sufficiency rate and safe food self-sufficiency rate. Chapter VIII: Government Intervention to Promote Food Security. The political nature of food and food problems dictates that Governments must intervene in food economic activities to promote food security. This chapter provides policy recommendations to promote food security from three aspects: food production, circulation and consumption. Chapter 9, Research Conclusions and Prospects. Summarize the main conclusions of the research in this book and look forward to the main directions of future research on food security. In the future, on the issue of food security, we should focus on the institutional guarantee of food security internally; Externally, we should focus on how to formulate and use international trade rules to safeguard domestic food security. Since food security and food security are closely linked, further research on food security should be carried out in the future. According to the recommended dietary intake of Chinese residents, 313 kg of food per capita can meet the nutritional needs of the human body, which is the quantitative standard of China's food security. China's current food quantity is safe, but "access" is insecure. Current food security is also unsustainable due to the huge financial burden and environmental damage caused by food production. China needs to establish a concept of "food security under the premise of ensuring resource security" and seek a new path for food security. Keywords: food security; dietary nutrition; food self-sufficiency rate; Food safety(AI翻译)
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