Study on population carrying capacity of land resources in Shandong, China

摘要

The development characteristics of grain production and the land carrying circumstance in Shandong Province from 1949 to 2012 were analyzed in the paper. Then the situation of the population carrying capacity of land resources at a county level scale in Shandong Province was studied by using the land carrying capacity model and land carrying capacity index model based on the human-grain relationship. The results are as follows: Total grain production in Shandong Province showed a periodic fluctuation and an overall growth characteristic, the population growth was less than the increase of grain production, and the per capita possession of grain had a wavy growth trend. Moreover, 61.43% of the counties in Shandong Province were grain surplus areas, 10.71% were human-grain balance areas, and 27.86% were grain overload areas in 2012. From a macro perspective, the grain production in Shandong Province is still in a surplus state, so the grain shortage areas need to meet the food needs of the overloading population through trade or deployment.