英文摘要:This thesis is intended to deal with the problem of land reclamation and ethnic interactions in Tung-shih area of middle Taiwan through the evolutions of the Ch’ing’s policy toward the aboriginal boundary. Although the government set up the T’u-niu boundary epitaph at Shih-kang village in 1761, the Han Chinese tenants of the An-li tribe, such as Huai-tsum Huang, could still penetrate the boundary for land reclamations through paying tax on behalf of civilized aborigines. Later on, the patent lumber-millers(Timber-producers) of Naval Shipyards(chun-kung chiang), crossing the Ta-chia Valley, entered Tung-shih to mill lumber and thus created a traditional settlement, Chiang-liao, in the area of present Ch''iao-sheng-hsien-shih Temple. Once the disputes between the patent lumber-millers(Timber-producers) and the aborigines occurred, the government, in consideration of safely acquiring lumber, would generally protect the former as they held legal status, and would not transfer the timber-making station from one place to the other, or limit the time of entering mountains, or prevent forferies, as requested by the aborigines. On the contrary, the civilized aborigines were urged to safeguard the patent lumber-millers(Timber-producers) and thus resulted in their being dominated by the Han Chinese eventually. During the Lin Shuang-wen Revolt, Tshung-li Liu, an aboriginal intermediate (Fan-ke), contributed greatly by winning the cooperation of the Atayals for the pacification, and thus turned into an important pioneer in the development of Tung-shih. He then cooperated with the Atayals for building irrigation ditches to solve the problem of water supply, and consequently established a peaceful relation between the Han villages and the aboriginal tribes, which even affected the pacification policy of the Japanese period. The re-organization of land rights after the Lin Shuang-wen Revolt transformed most of the Tung-shih area from an un-civilized region into a civilized one. Therefore, the Han tenants, singles or groups, called up some partners to rent lands from the aboriginal land-holders and thus established a chain of defensive villages spreading in the area of Ta-chia Valley, from Shih-pi-keng in the north to Ta-mau-pu in the south. The civilized aborigines migrated to the Pu-li Basin of central Taiwan after selling or leasing their lands to the Chinese, leaving behind various stories about land purchases at low prices. The official power had not reached the aboriginal tribes in the east of the boundary until the beginning of the aboriginal pacification wars and the establishment of Pacification Offices. The contributions of the Pacification Offices should not be under-valued, in spite of their being criticized as doing nothing but woo the aborigines materialistically. The reports of Tung-shih Pacification Office, containing the information about tribal realities and the mutual commitments between the Hans and the aborigines, reflected ethnic interactions and the impacts of official authority on the tribal society, and subsequently provided the later policy-makers with valuable information.