试论河西节度使设置的客观必然性

摘要

公元7到9世纪的中国版图内相继崛起了大唐与吐蕃两个强大的政权，双方通过不同的形式展开了深入的交流，形成了密切的民族关系。随着公元8世纪东亚地缘政治形势的改变，大唐实行了旨在保护丝绸之路畅通和西北边地安全的节度使制度。河西节度使在这样的形势下产生了，它的产生不仅具有客观必然性，而且对唐蕃和战关系产生了重要的影响。%Datang and Tubo ,the two powerful regime has raised on the Chinese territory between 7 and 9 century , and they formed a close ethnic relationship through different forms of in -depth exchanges .Datang implemented to protect the Silk Road and the northwest side of the safety Jiedushi system with the year eighth Century East Asian geo -politics changed circumstances .Hexi Jiedushi produced in such a situation , it not only has its objective necessity ,but also has an important impact on the relationgship between Tang and Tubo .