定西县唐家堡流域土地生产力与人口承载力研究

A STUDY ON THE LAND PRODUCTIVITY AND THE POTENTIAL POPULATION CARRYING CAPACITY IN TANG JIA PU CATCHMENT

本文采用主成分和综合指数法进行土地评价,并编制1:10000土地资源评价图;采用农业生态区域法(AEZ),计算作物土地生产力;用经验外推法预测作物单产;经过资源平衡,用线性规划方法确定作物优化结构和预期粮食产量(2000年);根据人口预测与消费水平计算了本世纪末土地人口承载力及承载状态。根据上述研究,提出流域治理对策。

The research on the large-scale land resource map of a small catchment area, the land evaluation and the potential of population supported by a cer- tain land resources were attempted. Based on the land resource map,the land suitability evaluation and the potential evaluation have been carried on by using the method of Comprehensive Index and Main Component Analysis. The crop-land potential productivities are calculated according to Agricultural Ec- ological Zone Methodology. The optimization model for the utilization of the land resource and the expected food-output are given out by using Linear Programing, then, the potential population carrying capacity is accounted. At last based on the above results, the harnessing countermeasures are suggested.