Research on protection grade evaluation method of cultivated land resources based on production capacity—A case study on Lulong County of Hebei Province
LIU Hua-bin, ZHANG Jun-mei, LI Xin-wang, XU Hao, WANG Shu-tao, FAN Wen-yang
JOURNAL OF NATURAL RESOURCES . 2009, (8): 1325 -1333 .  DOI: 10.11849/zrzyxb.2009.08.001