地理学报 ›› 2014, Vol. 69 ›› Issue (2): 227-242.doi: 10.11821/dlxb201402007
邵景安1, 张仕超2, 李秀彬3
收稿日期:
2013-04-01
修回日期:
2013-10-30
出版日期:
2014-02-20
发布日期:
2014-02-20
作者简介:
邵景安(1976-),男,汉族,安徽亳州人,博士,研究员,主要从事土地利用与生态过程研究。E-mail:shao_ja2003@sohu.com
基金资助:
SHAO Jing'an1, ZHANG Shichao2, LI Xiubin3
Received:
2013-04-01
Revised:
2013-10-30
Published:
2014-02-20
Online:
2014-02-20
Supported by:
摘要: 利用SPOT-5 影像、1:1 万地形图、退耕还林和森林工程图、社会经济统计等数据,分析了重庆市石柱县耕地边际化的特征和发生原因。结果发现:① 10 年间研究区耕地边际化率16.18%,主要分布于七曜山的北部高山区和南部中山区,而且伴随农村劳动力的非农化和留守劳动力的老龄化,边际化在很大程度上还会加剧。② 海拔、地块相对村庄的分布半径和道路连接度对耕地边际化的发生影响较大。边际化率随海拔升高而增加,特别是≥1000 m集中边际化的60.88%,在坡度和地块相对村庄的分布半径上也有类似规律。③ 劳均耕地面积和务农劳均年龄是影响耕地边际化的主要因素,耕地流转和微型农机台数是从适度规模经营、提高劳动生产率上影响耕地边际化。④“比较劣势主导边际化”分布最广,占总边际化的55.32%,其次是“区位主导边际化”,占33.80%。⑤“地形主导边际化”实施类似退耕还林继续扩大的“顺边际化”政策,“区位主导边际化”从合理安排新居点、完善农村道路体系上实施“反边际化”,“比较劣势主导边际化”从提高适度规模经营、微型机械化程度上开展“反边际化”。
邵景安, 张仕超, 李秀彬. 山区耕地边际化特征及其动因与政策含义[J]. 地理学报, 2014, 69(2): 227-242.
SHAO Jing'an, ZHANG Shichao, LI Xiubin. Farmland marginalization in the mountainous areas:Characteristics, influencing factors and policy implications[J]. Acta Geographica Sinica, 2014, 69(2): 227-242.
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