Planting structure adjustment and food security in major food production district: A case study on 10 main food production counties in Gansu Province, China

[摘要] This paper made an empirical study on planting structure adjustment and food security, in which main data and information came from the questionnaires of 10 main food-production counties in Gansu Province, China. The investigation results showed that: 1) During 1995 and 2014, the cultivated land area per household dropped by 2.40%, in which food crop area declined by 3.16%, yet cash crop area increased by 129% in the survey area. In the same period, the revenue per household increased by 162.99%, while food income from the revenue only increased by 17.42%; 2) In Hexi and Longzhong districts, mean wheat crop area per household shows a downtrend, while cash crop area increased significantly in the past 20 years. Especially, the household food output and income did not appear a simultaneous increase trend. In Longdong district, the household food output and income showed a simultaneous uptrend, and household income came mainly from miscellaneous grain (e.g. sorghum, bean, buckwheat, etc.); 3) In order to pursue higher economic efficiency of cultivated land, the farmers were forced to adjust planting structure and develop characteristics industries, profitable agriculture and cash crop with comparative advantage, which resulted in few food stock and impacted seriously on regional food security.

[发布机构] State Key Laboratory of Cryospheric Sciences, Northwest Institute of Eco-Environment and Resources, Chinese Academy of Sciences, Lanzhou, Gansu; 730000, China^1;Gansu Academy of Social Sciences, Lanzhou, Gansu; 730070, China^2

[效力级别] 生物科学

[关键词] Comparative advantage;Cultivated lands;Data and information;Economic efficiency;Empirical studies;Food production;Household income;Structure adjustments