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This paper uses panel data from 116 prefecture-level cities in China from 2003 to 2019 to study the impact of price and climate factors on soybean planting area and yield per unit area in China. We adopt the panel instrumental variable method to control the endogeneity of the price in the regression and allow possible spatial autocorrelation errors. According to the research results, price is the primary factor affecting soybean production. For every 1% increase in soybean prices, the soybean planting area increases by 1.650%, and the per unit yield decreases by 0.898%. As for fertilizer prices, for every 1% increase in fertilizer prices, the soybean planting area will decrease by 2.616%, and the yield per unit area will increase by 0.819%. At the same time, climate change will also significantly affect soybean production. For every 1 cm increase in precipitation in April and May, the soybean planting area will increase by 0.233% and decrease by 0.172%, respectively. The precipitation increase in June and July can also significantly promote soybean yield. The results demonstrate that because soybean is a shade-loving crop, the increase of growing degree days will hinder the progress of soybean yield.

Accelerating the construction of livestock powerhouse is an important task for the construction of an agricultural powerhouse and a great modern socialist country. It is of great practical significance to scientifically understand the connotation requirements and theoretical logic of livestock powerhouse construction, grasp the current realistic basis and strategic path of accelerating the construction of livestock powerhouse. Based on the actual development of China's livestock industry, this study understood the connotation requirements of livestock powerhouse construction in terms of domestic production and supply, international resource utilization, scientific and technological equipment support, feed and forage supply, green cycle development, animal disease prevention and control, and analyzed the realistic results of the current livestock industry development and the shortcomings of livestock powerhouse construction. In order to further lay a solid foundation for the construction of livestock powerhouse, it was recommended to consolidate the foundation of domestic production and supply, improve the efficiency of international resource utilization, enhance the capacity of scientific and technological support, strengthen feed and forage supply, promote green cycle development, and strengthen animal disease prevention and control. [ABSTRACT FROM AUTHOR]

Simple Summary: The frequent occurrence of pig epidemics has restricted the sustainable and healthy development of the pig industry and its ability to enhance the supply of pork, negatively impacting China's economic and social development. In recent years, China has faced many pig epidemic risks and challenges, with one high-risk area and two medium–high-risk areas. The epidemic risk was highest in Beijing, Hainan, Liaoning, Tibet and Zhejiang. This study will help to better prevent and mitigate epidemic risks, promote high-quality development of the pig industry, and meet the nutritional needs of residents. Strengthening the analysis and risk assessment of the pig epidemic will help to better prevent and mitigate epidemic risks and promote the high-quality development of the pig industry. Based on a systematic understanding of live pig epidemics, a risk assessment index system was constructed, and the spatial and temporal variation characteristics of pig epidemics in China were explored by the entropy method. In recent years, the overall trend in pig epidemics over time first increased and then decreased; in space, the acceleration of the spread of epidemics across the country weakened. China still faces challenges, including many types and a wide range of diseases, large total livestock breeding and weak epidemic prevention and control capacity, and a large risk of introduced foreign animal epidemics. The spatial and temporal variations in the pig epidemic risk were obvious; one high-risk area, two medium–high-risk areas and 10 medium-risk areas have been found in recent years, during which time, the epidemic risk was highest in Beijing, Hainan, Liaoning, Tibet and Zhejiang. However, there were significant differences in the regional distribution of the risk level of pig epidemics in different years. To further build a secure "defense system" for the high-quality development of the pig industry, it is recommended to improve the monitoring and early warning system of pig epidemic risk, perfect the pig epidemic prevention and control system, and strengthen the regional collaboration mechanism of epidemic prevention and control. [ABSTRACT FROM AUTHOR]