摘要
基于能值分析理论对2000—2015年南京耕地利用集约度进行测算并进行时序变化分析,运用灰色关联法分析各影响因素对南京耕地利用集约度的贡献率。结果表明:南京耕地利用集约度持续上升;各投入要素中,农业机械集约度快速增长,劳动力、农用化肥和农药集约度呈下降趋势;各影响因素中,耕地利用集约度与建设用地面积之间耦合度最强。
Based on the emergy theory,an estimate of cultivated land use intensity in Nanjing from 2000 to 2015 was made and its temporal variation was analyzed. Then the contribution rate of each influencing factor to cultivated land use intensity in Nanjing was analyzed by gray correlation method. The results showed that: The cultivated land use intensity in Nanjing was increasing; among the input factors,the intensity of agricultural machinery was increasing rapidly,and the labor force,agro-chemical fertilizer and pesticide concentration were declining. The coupling degree between cultivated land use intensity and construction land area was the strongest among the influencing factors.
出处
《安徽农业科学》
CAS
2018年第4期66-69,共4页
Journal of Anhui Agricultural Sciences
关键词
耕地利用集约度
能值分析
灰色关联
南京
Cultivated land use intensity
Emergy analysis
Gray correlation
Nanjing
