关键词: 青豌豆, 时空变化, 效率优势, 规模优势, 可持续生产

Abstract:

China is the world's top producer and exporter of green peas. However, the spatio-temporal dynamics of green pea crop area and yield in major countries on a global scale are not clear, which limits the sustainable development of green pea production in China. Here we analyzed the spatio-temporal dynamics of global green pea production from 1961 to 2018 using the linear regression model and the dominance index. We found that before 1990, world production of green peas was concentrated in Europe, whose harvesting area and total yield accounted for 42.5% and 41.5% of the world, respectively. Global green pea production shifted to Asia after 1990, and the harvesting area and total yield accounted for 71.1% and 77.9% of the world, respectively. Compared with the United States, Britain, India and other major green pea producing countries, advantage indexes before 1990 were weak. However, production scale index of China had a significant advantage over other major producing countries and an efficiency advantage of the index gradually declined after 1990. Although the increase of green pea harvesting area of China recent years has driven the shift of global green pea production to Asia. Compared with other major producing countries, Chinese production efficiency did not show significant advantages. Therefore, optimizing and adjusting planting distribution and improving yield are of great importance for increasing international competitiveness and sustainable development of green pea production of China.

Key words: Green pea, Spatio-temporal dynamics, Efficiency advantage, Scale advantage, Sustainable production