Eating well has become the core issue of food security in the new situation.By clarifying the concept and scope definition of cold and cool areas,K-means clustering was used to spatially identify and type 43500 grid elements with 10 km accuracy in China's mid-altitude cold and cool regions with agricultural production as the dominant function.The results show that:(1)The mid-altitude cold and cool regions cover an area of about 2.63 million km2,accounting for roughly 28.47％of the total land area,and are mainly concentrated in the mountainous and plateau topography of nine provincial-level regions in the northeast,northwest and southwest parts of China.(2)The mid-altitude cold and cool regions can be divided into five types of agricultural development:forest-dominated mountain wet and cold regions,forest-dominated alpine warm and cold regions,agriculture-dominated cropland arid and cold regions,pasture-dominated plateau arid and cold regions,and pasture-dominated alpine high and cold regions.(3)The raster area of farming,forestry and animal husbandry favourable development area is 9.97％,55.82％and 34.21％,and the district and county share is 27.34％,35.90％and 36.76％,respectively.This paper provides a scientific basis for exploring the combination of characteristic agricultural layout and unique cold climate resources in mountainous areas,which is of great practical significance for ensuring food security and realising the rural revitalisation strategy in the new period.
关键词
冷凉经济/冷凉气候/山区特色农业/农业类型分区/粮食安全观
Key words
cold and cool economy/cold and cool climate/mountain special agriculture/agri-cultural type zoning/food security perspective
维普
万方数据