文章基本信息

标题：Is There Evidence of a Critical Mass in the Mid-Atlantic Agriculture Sector Between 1949 and 1997?
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作者：Lynch, Lori ; Carpenter, Janet
期刊名称：Journal of Food Distribution Research
印刷版ISSN：0047-245X
出版年度：2003
页码：116-128
出版社：Food Distribution Research Society
摘要：Ongoing farmland loss has led county planners to ask "is there a critical mass of farmland needed?" to retain a viable agricultural sector. This study examines whether counties lost farmland at a faster rate if the number of agricultural acres fell below a critical threshold. Results from six Mid-Atlantic states over the period 1949 to 1997 indicate that counties with fewer agricultural acres lost farmland at a faster rate. However, after splitting the study period into two time segments (1949-1978 and 1978-1997) and modeling separately, this result was not found for the later time period, suggesting a uniform critical mass level may not exist. Population growth in a county accelerated farmland loss over all time periods.