区域粮食安全的动态研究--以延安市宝塔区为例

粮食安全的研究对地区的发展是极为重要的因素,20世纪70年代以后,国内外对粮食安全的研究相继展开,不同领域的专家从不同角度对粮食安全问题进行研究,同时还有一些地区的实例研究。本文从粮食的数量、质量和持续发展三个方面分别对粮食安全进行分析,并以位于黄土高原丘陵沟壑区的延安市宝塔区为例进行实例研究,结果表明,延安市宝塔区的粮食并不能完全满足小康水平的400kg.人-1,尤其是随着耕地面积的流失和饲粮性动物的饲养的增加,粮食数量安全显得更为重要;在粮食质量方面,相对于延安地区和陕西省而言,该地区的粮食质量在有害物质方面还比较安全;由于处于城郊区,宝塔区的耕地处于较大的压力下,需要改善土地利用结构、提高科技生产水平或者从外地调入粮食以满足其发展的需要。

Dynamic research on regional grain safety

Grain safety research is important for the development of an area.Since the seventies of last century,related researches have been made by the specialists in different domains of science both at home and abroad,from different points of view and with case studies in some regions.In this paper,the grain safety was analyzed from the aspects of quantity,quality and sustainable development,and a case study was made in the Baota District of Yan'an,a hilly and gully area of the Loess Plateau.The results showed that the grain production of this District could not fully meet the well-to-do requirement 400 kg per capita,especially under the conditions of increasing cultivated area run-off and grain-dependent animals breeding,which made the grain safety more important.As for grain quality,this district was relatively safe because of less harmful substance in grain.But,due to the fact that it is in the suburb of Yan'an,this district is under greater pressure of limited cultivated land,and thus,it is essential to improve its land-use structure,promote science and technology level,or purchase grain from other places to meet local demands.