土地资源承载力若干问题浅析

本文就当前土地资源承载力研究中所遇到的若干问题,从土地资源承载力定义的理解、土地生产力的计算、单产预测、土地资源评价和土地利用结构调整等5个方面进行了探讨。 如何定义和理解土地资源人口承载力是进行这项研究的关键。以研究土地资源人口承载力为目的的土地资源评价是进行土地生产力计算和土地利用结构调整必不可少的基础。根据统计资料预测的作物单产,不能反映出土地生产力,而使用农业生态地带法计算作物单产目前也存在着一些问题。

A PRELIMINARY ANALYSIS OF THE POPULATION SUPPORTING CAPACITY OF LAND RESOURCES

Several problems in the study of the population supporting capacity of land resources are discussed in this paper. The problems are the understanding of definition, the calculating of land productivity and crop yield, the evaluating of land resources, and the adjusting of land use structure.How to define and understand the population supporting capacity of land resources is the key in the study. A specified land evaluation for the study is the necessary foundation for the land productivity calculating and the land use structure adjusting. The predicted crop yield based on economic statistics can not represent land productivity. There are also some problems in crop yield calculated by the method of AEZ.