农业集聚对农业面源污染的影响——基于中国地级市面板数据门槛效应分析

邓晴晴, 李二玲, 任世鑫

Impact of agricultural agglomeration on agricultural non-point source pollution: Evidences from the threshold effect based on the panel data of prefecture-level cities in China

DENG Qingqing, LI Erling, REN Shixin

表7 高于门槛估计值的地市所占比例

Tab. 7 The percentage of the prefecture-level cities with agricultural agglomeration level higher than threshold estimation value

年份 COD lnagg>0.976 (%) TN lnagg>-0.320 (%) TP lnagg>0.452 (%) 2007 40.356 88.427 67.953 2008 40.950 88.724 66.469 2009 41.543 88.427 66.766 2010 42.730 88.427 67.359 2011 41.543 88.427 65.875 2012 40.950 88.724 65.875 2013 40.356 86.350 62.611 2014 43.027 87.834 67.656 2015 42.730 88.427 66.766