| This study taken Zhejiang province as the case study area, the loads of total nitrogen (TN) and total phosphorus (TP) from farming, livestock breeding and rural life non-point sources in 2009 were calculated with JOHNES export coefficient model, and then the economic losses of nutrients loss from the three non-point sources were quantitatively evaluated with the protection cost method of environmental economics theory. The results showed that the TN load of from farming, rural life and livestock breeding accounted for 57.84%, 30.22% and 12.30% respectively. And the TP load of from farming, rural life and livestock breeding accounted for 24.28%, 46.18% and 29.00% respectively. Economic loss caused by nutrients loss from agricultural non-point source was equivalent to RMB 2 329 424 700 yuan/a and the loss from farming, livestock breeding and rural life non-point sources accounted for 55.46%, 13.33% and 31.21% respectively. The results indicated that control of farming and rural life non-point sources should be focused on in order to reduce the economic loss of nutrients loss caused by agricultural non-point source. |
