Cultivated land is one of basic conditions for grain breeding.It is great significant for strictly protecting cultivated land and ensuring national food security to study the spatial-temporal evolution pattern and driving factors of non-agricultural farmland.Based on the land use data of Henan province in the period of 2000-2020,the spatial-temporal evolution and driving factors of non-grain production of cultivated land were analyzed by standard deviation ellipse model,hot spot analysis and geographic detector.The results showed that:(1)During the study period,the area of non-grain production of cultivated land reached 3 007.10 km2,accounting for 2.90%of the total area of current cultivated land,and the most in the past 20 years is the period of 2015-2020;The area of non-grain production of cultivated land in Xinyang city reached 754.14 km2,accounting for 25.08%of the total non-grain production of cultivated land.(2)The hot spots of non-grain production of cultivated land were concentrated in the western and southern parts of the study area from 2000 to 2020.The gravity center of standard deviation ellipse was mainly distributed in Pingdingshan city,and the gravity centre migrated southward.(3)The non-grain production of cultivated land in Henan province was jointly influenced by agricultural,economic and social factors,and the agricultural factors have a greater influence in the study area,and the interaction between any factor and the others showed two-factor enhancement and non-linear enhancement effects.There was obvious spatial differentiation of non-grain production of cultivated land in Henan province.
关键词
土地资源/耕地保护/粮食安全/耕地非粮化/时空分异/驱动因素
Key words
land resources/cultivated land protection/food security/non-grain production of cultivated land/spatial-temporal differentiation/driving factors
维普
万方数据