INSTRUCTIONS FOR AUTHORS

摘要

An Abstract of no more than 200 words should appear under the Authors' names and addresses, briefly specifying the aims of the work, the methods used, the main results obtained and the conclusions drawn. Use acronyms sparingly in the Abstract, and define them at first use, e.g. "geographical information system (GIS)". Say what the manuscript does and achieves. Do not use the Abstract as an Introduction.