ISI Web of Knowledge Essential Science Indicators 金 WELCOME?HP图ws HOT PAPERS MENU BY FIELD Display papers from this field: (Al Fields) OR BY NAME Show alphabetic list of: Scientist OR BY SEARCHING Enter terms or phrases separated by the operators AND or OR in one or more of the search field Search fields are automatically combined using the ANd operator Title word example: climat" and chang Scientist: example: SMITH A Institution example: SALK INST Countrv/Territor example: USA Journal: example: Phys Rev lett"(view full titles) SEARCHCLEAR Copyright c 2014 The Thomson Corporation