The study looked at how forests in Northeast China affect human well-being by examining the relationship between ecosystem services and ecosystem health. By assessing different aspects of the forest like material synthesis, soil retention, and biodiversity maintenance, researchers found that certain areas had stronger ecosystem functions and better ecosystem health. Forests in the south, east, and west showed higher levels of ecosystem services and health compared to those in the north and central regions. Some forest farms had weaker ecosystem functions, while others had the most optimal ecosystem health. The study suggests that managing forests based on local conditions can improve overall well-being in the region.