Research on land use change and non-agriculturalization of land in traditional agricultural region—A case study in Neihuang County of the North China Plain

摘要

This paper supplies academic reference and scientific base for grain supplying security sustainable development and regional land use optimization by means of land use change and exploration into non-agriculturalization of land in traditional agricultural region in the North China Plain from 1979 to 2000. Constructed non-agriculturalization of land evaluation model and gained land use data by application of 38 technique, and analyzed non-agriculturalization of land use in the study region. Cultivated land sustainably reduced, while forestalled and construction land rapidly increased in the study region. The non-agriculturalization of land accelerated dramatically, and total grain yield was subject to coercion. In the study region, land use change greatly varied and non-procentralization of land accelerated, an increase of grain yield per unit area weakened the effect of non-agriculturalization of land on grain yield. In order to ensure grain supplying safety, we should control construction land scale, make non-agriculturalization of land degree and national economic growth rate consistent. Because forest land proportion of non-agricultural land significantly increased, the united agriculture and forest bureau should be established to prevent agriculture and forest from seizing land.