Acta Agrestia Sinica
Emergy Evaluation on the Cropping Mode and the Cropping-breeding Coupled Mode in the Ecotone Between Farming and Pasturing Areas
LI Fei, LIN Hui-long, CHANG Sheng-hua
. 2007, (4): 322 -326 .  DOI: 10.11733/j.issn.1007-0435.2007.04.005