地理科学 ›› 2018, Vol. 38 ›› Issue (8): 1319-1327.doi: 10.13249/j.cnki.sgs.2018.08.014
收稿日期:
2017-07-26
修回日期:
2017-11-05
出版日期:
2018-08-20
发布日期:
2018-08-20
作者简介:
作者简介:曹永强(1972-),男,内蒙古丰镇人,博士,教授,博士生导师,主要从事水文水资源研究。E-mail:
基金资助:
Yongqiang Cao(), Weijia Li, Liting Yuan
Received:
2017-07-26
Revised:
2017-11-05
Online:
2018-08-20
Published:
2018-08-20
Supported by:
摘要:
阐述主要粮食作物的时空格局变化特征,对中国粮食安全决策意义重大。基于河北省县市近15 a (2001~2015年)的农业数据资料,采用分段线性趋势以及生产指标-产量波动系数来分析河北省主要粮食作物的时空变化特征,并对河北省粮食作物进行安全评价。结果表明:从产量与播种面积来看,近15 a河北省主要粮食作物变化趋势经历了由波动减少到稳步增长2个阶段,且变化趋势显著;从空间格局变化来看,大致呈由南向北逐渐递减的规律分布,其中不同农作物分布规律各有差异;从粮食安全方面来看,河北省70%以上年份粮食波动系数均超过中国粮食安全平均水平,粮食波动系数较高,粮食安全风险较大;但从人均粮食产量来看,安全程度相对比较乐观,粮食安全状况渐趋于平稳。研究可为河北省粮食生产时空布局的优化、结构调整与社会经济协调发展提供依据。
中图分类号:
曹永强, 李维佳, 袁立婷. 河北省主要农作物生产时空格局变化特征及安全评价[J]. 地理科学, 2018, 38(8): 1319-1327.
Yongqiang Cao, Weijia Li, Liting Yuan. Spatio-temporal Pattern Variation and Safety Evaluation of Crops in Hebei Province[J]. SCIENTIA GEOGRAPHICA SINICA, 2018, 38(8): 1319-1327.
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