Science China Earth Sciences, an academic journal cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China, and published by Science China Press, is committed to publishing high-quality, original results in both basic and applied research. Science China Earth Sciences is published in both print and electronic forms. It is indexed by Science Citation Index. Categories of articles: Research papers report on important original results in all areas of earth sciences. Reviews summarize representative results and achievements in a particular topic or an area, comment on the current situation, and advise on the research directions. The author's own opinion and related discussion is requested.