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Chinese Livestock numbers and grassland impact

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... According to the NBS, National Bureau of Statistics (2018), soybean production in Heilongjiang Province (in the northeast) alone accounted for 39.1% of the nation's total, which may be why the northeast regions can achieve soybean self-sufficiency. Milk self-sufficiency is achieved in a low percentage of regions; however, milk production regions in western China with a higher presence of cattle and grasslands (Kemp et al., 2020;Zhang, 2007) were not included in this study. The EAT-Lancet Commission proposed the reference healthy diet, which is related to human health and environmental sustainability and benefits sustainable food systems (Willett et al., 2019). ...
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Achieving food and feed self-sufficiency is important for both China and the world. While China's food self-sufficiency has been examined at the national and provincial levels, few studies consider lower administrative levels or different food and feed items. This study quantifies self-sufficiency in the eastern regions of China and examines correlations with agronomic (arable area, yield, fertilizer input, and machinery power) and socioeconomic (population density, gross domestic product [GDP]) variables at the local level, which are related to the interactions of the Sustainable Development Goals. We calculated food and feed balances, and checked correlations across and within regions grouped by population density levels between production, balance indices, and other agronomic and socioeconomic variables. The results showed that most regions can achieve self-sufficiency in cereals, vegetables, and meat. Regarding eggs and maize, there was self-sufficiency in the north but deficiency in the south. Nearly all regions demonstrated extreme shortages of milk and soybeans. The results also showed a positive correlation between the production of some food commodities and the population in eastern regions of China, demonstrating that the aim of achieving food self-sufficiency at the local level is pursued. For cereals, vegetables, and maize, the yield and arable land per capita were positive factors for self-sufficiency, while GDP per capita was a negative factor for cereals, meat, and maize. Various factors have different impacts on the food and feed self-sufficiency of regions based on population density. Protecting arable land by rural revitalization and mitigating urban sprawl can retain food and feed self-sufficiency in large cities. This study outlines important implications for policymakers seeking to achieve food and feed self-sufficiency in China.
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