Characteristics of Transfer Trajectory of Barycenter and Spatial Mismatch Relationship Between Cultivated Land Area and Grain Yield in China
To explore the coordination and unity of grain resources and cultivated land use efficiency,using the data of national cultivated land area and grain yield from 2000 to 2019,taking the province as the basic unit of data,and based on barycenter model and spatial mismatch index,the characteristics and spatial mismatch relationship of migration trajec-tory of the barycenter of national cultivated land area and grain yield was systematically analyzed.The results show that the change directions of barycenter of cultivated land area and grain yield are not the same during the study period.The barycenter of cultivated land area moved from Boai county,Henan province to the northeast,while the barycenter of grain yield first moved from Wuyang county,Henan province to the northeast and then to the east.The national grain output and cultivated land area are mainly concentrated in the middle and low-level areas showing the distribution characteristics of positive mismatch to negative dislocation from east to west.The cultivated land area and grain yield are greatly influ-enced by resource endowments,but many factors such as economic development level,population,precipitation,and accumulated temperature level also have a certain driving effect.
cultivated landgrain yieldbarycenter modelspatial mismatch index
NETL
NSTL
万方数据
维普
