摘要
利用耕地压力指数模型,计算分析了2010年西北旱区大型灌区不同粮食消费模式下的耕地压力指数、粮食盈余情况及可再承载人口状况。结果表明:在平衡膳食(PH)、初步小康或营养安全(XK)、富裕型(FY)社会三种不同粮食消费模式下,西北旱区97所大型灌区的耕地压力虽差异明显,但整体压力较小,三种模式的平均耕地压力指数(K值)均小于1,人粮关系较为和谐,除保证自身粮食需求外仍有一定的粮食盈余;三种模式下,粮食盈余量为869.19、586.18、41.46万t,可再承载人口数为2698.75、1465.46、75.38万人。
Based on the arable pressure index （API） model ,the APIs of large-scale irrigation areas in arid regions of northwest China were calculated ,and the conditions of food supplies and re-carrying population were analyzed under different food consumption patterns .The results showed that the overall APIs were still low ,average arable pressure in-dexes （K values） of three patterns were less than or equal to 1 ,and the relationship between population and food produc-tion was relatively harmonious ,although there were obvious differences in APIs of 97 irrigations under different food con-sumption patterns .In addition to supplying food for self-consumptions ,there was still respectable amount of surplus food , which was 869 .19 ,586 .18 and 41 .46 ten thousand tons , respectively , under the economic society of balanced diet （PH） ,a comfortable level of living （XK） ,and relatively comfortable society （FY） .The re-carrying populations were 2698 .75 ,1465 .46 ,and 75 .38 ten thousand people ,respectively .The results could be used to provide data and theo-retical bases for assessing the status of arable land resources in the northwest arid areas .
出处
《干旱地区农业研究》
CSCD
北大核心
2015年第1期244-251,共8页
Agricultural Research in the Arid Areas
基金
国家科技支撑计划项目(2011BAD29B09-1-1C)
关键词
耕地压力指数
粮食盈余量
承载人口
人粮关系
西北旱区
大型灌区
arable pressure index arable pressure food supply re-carrying population relationship between pop-ulation and food production arid region of northwest China large-scale irrigation area
