《Table 2 Numbers of counties with different types of farmland area changes》

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《中国山区耕地利用边际化过程机理——基于成本和收益变化的分析（英文）》

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From 1990 to 2000，there were 468 MCs with a net decrease of farmland，accounting for52%of the total number of MCs，while the proportions of counties with a net decrease of farmland in PCs and HCs were 71%and 56%，respectively.The high proportion of net decrease in PCs was caused by massive construction land expansion in the coastal plain areas.During 2000–2010，the changes of cultivated land in PCs were similar to those in the previous decade，and the number of counties with a net decrease of farmland increased by 61，with the proportion increasing to 78%.However，the number in MCs and HCs increased significantly，especially in MCs，where the number increased from 468 to 712 and the proportion expanded to 79%.Correspondingly，the number of MCs with a net increase of farmland decreased from 411 to 114（Table 2）.Overall，since 2000，the reduction of farmland in MCs of China is more evident than in HCs and PCs.