西藏民族大学学报（社会科学版）

安史之乱后,吐蕃趁机占据河陇后又两线出兵,一路同北方诸部入寇关陇,一路与南诏联合攻入蜀川。唐朝在关陇战场上面对吐蕃的猛烈攻势,只能被动防御,京师长安数度戒严,甚至还曾被攻陷过。唐朝在极为艰难的情况下开始构建长安防御体系。在西南战场上,唐军以蜀川为阵地,屡次大败吐蕃,取得不少战绩,迫使其不断加大兵力投送,唐蕃战争主战场逐渐转向西南。唐朝成功地将南诏及蛮族诸羌拉拢过来并联合进攻吐蕃,致使吐蕃在西南两面受敌而节节败退,意图攻占成都后北上夹击长安,继而逐鹿中原的梦想破灭。综观代宗朝、德宗朝时的西南战事,唐朝之所以最终守住蜀川,蜀川以其强大的财赋能力为唐军提供充足可持续的后勤保障也是不可忽视的重要因素。

When Tang Dynasty just put down the internal rebellion, the Tibetan took the opportunity to occu-py the Helong area, and then the army divided into two ways to attack the Tang Dynasty: one army with the north-ern nomads attacked the Guan Long area, and the other army with the southern Nanzhao attacked the shuchuanarea. Tubo in the Guan Long area attacked violently and Tang army resisted difficultly. Durign the Tang Daizongand Tang Dezong' reign, Tang Dynasty government made shuchuan area as a strategic base for the southwest bat-tlefield, and repeatedly defeated the Tibetan attack and demoliashed Tibetan's plan to occupy the capital ofChengdu. In the precoess of the battles, shuchuan areas served an important factors with respect to its financialsupport for the Tang army.