Abstract: The Kangxi and Qianlong emperors strengthened the sponsorship of land cultivation in Mongolia and changed the administrative mode over Han Chinese and Mongols from ethnic segregation to jurisdictional separation. However, as the central court increasingly lost control to local interests,private Mongolian cultivators flourished, which finally motivated the late Qing Reform to draw the Mongolian banner lands into the state revenue system. In this reformative attempt, the court authorized Yigu, the General of Suiyuancheng, to publicize the privately cultivated lands and permitted him to cooperate with the Bureau of Reclamation and land dealers. Yigu's way of reforming the cultivation,on the one hand, impeded the landed interests of the Taijis, and on the other hand, redirected the land revenues to the Bureau of Reclamation. Therefore, Yigu's conflict with the Taiji led to his execution of Danpier, a representative Taiji in Yihju League. The court in turn used this event as an excuse to dismiss Yigu and his collaborators. As a result, the Han Chinese and Mongols became integrated. The article demonstrates that other parts of Inner Mongolia followed Yigu's reform and therefore intensified the presence of the state power in Inner Mongolia. In conclusion, this critical change helped to increase the centripetal force of the Republican China over the Jasagh Mongolia.

摘要： 康乾开垦蒙界，改蒙汉隔绝为分治，使州县向蒙旗扩张。但中央规划败于地方利益，清廷逐渐无力控制蒙旗私垦，导致以丹不尔为代表的台吉坐大，蒙、汉、州县抱团应付朝廷。清末新政意图将蒙地纳入国家赋税系统，放权给绥远城将军贻谷，以官商合办夺私垦兴官垦。将军、垦务局、地商联合，与台吉利益冲突。贻谷杀丹丕尔，更多汉官介入蒙地，对外藩蒙古管理由单一变多重。但此模式私肥垦务局，与新政初衷相悖，清廷以“误杀台吉”为由铲除贻谷系官员，收回权力。弱势国家力量不足，先借官商合办为跳板大幅降低行政成本，再以体制内常规手段处理官商，实现边疆治理转型。由此，蒙旗人群结构改变，互容性增强，国家权力在蒙地绵密化，利于后续政权的边疆统合。

关键词: 边疆治理, 清末新政, 台吉, 丹丕尔, 贻谷