Field Sampling Design for Land-use and Land-cover
Changes Based on3S Technology
——Taking Heilongjiang Province as An Example
XU Xin-liang, ZHUANG Da-fang, ZHANG Shu-wen
Remote Sensing Technology and Application . 2002, (3): 135 -139 .  DOI: 10.11873/j.issn.1004-0323.2002.3.135