The Taitung District Agricultural Research and Extension Station (TTDARES) of the Council of Agriculture held the 2021 Agroecosystem Long-term Ecology Research Conference online on October 7, hosted by TTDARES director Chen Hsin-yen. Lin Yu-pin, associate dean of the College of Bioresources and Agriculture at National Taiwan University, and Lin Chau-chin, chair of the Society of Subtropical Ecology, respectively gave presentations entitled “Establishing Ecological and Agricultural Management Modes Based on Locality and Landscape Sizes” and “New Tasks and Challenges in Long-term Agricultural Ecology Research.” Representatives from the district agricultural research and extension stations in Taoyuan, Miaoli, Tainan, Hualien, and Taitung gave presentations on the monitored results from conventional and organic citrus orchards and rice fields in the aspects of insects, soil, and yield. The conference was aimed at sharing results of long-term research on agroecosystem ecology and providing those interested in engaging in such research with reference material, in turn helping to find direction for this field of study. This will provide an important scientific basis for agricultural operations and management and establish modes for agricultural and ecological management.