Impacts of the rise of labor opportunity cost on agriculture land use changes&mdash|A case study of Ningxia Hui Autonomous Region
TIAN Yu-jun, LI Xiu-bin, XIN Liang-jie, MA Guo-xia, LI Zhan-ming
JOURNAL OF NATURAL RESOURCES . 2009, (3): 369 -377 .  DOI: 10.11849/zrzyxb.2009.03.001