Acta Agrestia Sinica
Heterogeneity and Error Estimation of Grassland Biomass Based on Cyclic Sampling Approach
BING Long-fei, SHAO Quan-qin, WANG Jun-bang, LIU Ji-yuan
. 2012, (2): 257 -267 .  DOI: 10.11733/j.issn.1007-0435.2012.02.010