東京朝日新聞で記者を務めた杉村楚人冠は,大正から昭和にかけて,別荘および住居を構えた旧千葉県東葛飾郡我孫子町において,手賀沼周辺の景観保護活動を行った。本研究では,楚人冠の景観保護活動を把握した上で,その活動に対する楚人冠の立場および主張の特徴として以下7点を明らかにした。・転入者としての視点を活かし,当該景観に東京郊外としての価値を見出した。・干拓計画に対し当該景観が保護対象に値すると主張し,先見性を示した。・景観を利用して周辺を開発することで景観の保護を試みる主張をした。・その主張には本多静六の自然風景地等の利用に係る考え方に合致する部分があった。・別荘住民らと共同した景観保護活動では思想や活動の面で主導する立場にあった。・景観保護の主張は地元住民の考えと対立関係にあったが,自らの主張を押し通す姿勢はなかった。・別荘住民との活動から地域の要職者や住民と交流を深める活動に次第に移行した。Sojinkan Sugimura worked as a journalist for Tokyo Asahi Newspaper Company from the late Meiji period to the early Showa period. He owned a villa which had a fine view of Lake Teganuma in Abiko city, Chiba Prefecture in 1912. He and his family moved there in 1924, and he lived there to the end of his life. From the Taisho period to the Showa period, he tackled some activities for the preserving of the landscape around Lake Teganuma. The aim of this study is to analyze his positions and opinions in some of these activities. First, by watching and thinking of the landscape around Lake Teganuma as a man who had moved to Abiko from Tokyo, he found worth as a Tokyo suburb in that landscape. Second, when a reclamation project was planed in Lake Teganuma, he had the foresight to argue that the landscape was worthy of preserving without carrying out reclamation. Third, he argued that we should try to preserve the landscape by developing an area around Lake Teganuma as a suburban residential area and sightseeing spot by turning the landscape to good account. Forth, part of his opinion about preserving the landscape is the same as the opinion of Seiroku Honda about natural landscape. Fifth, he worked on some activities for preserving the landscape with some people who owned a villa in Abiko city. He led the activities, and played an important role as the inspiration. Sixth, their opinion about preserving the landscape was contrary to the opinion of the local residents. Seventh, at first, he worked on some activities for preserving the landscape with villa residents, but gradually he tried to communicate with people in local important posts and local residents by starting some activities together