Abstract: The ecological conservation redline is the bottom line and lifeline to maintain and guarantee national ecological security. Human activities have a great impact on the ecological environment in the ecological conservation redline. This paper uses remote sensing monitoring methods to monitor the human activities in the ecological conservation redline in the northern mountainous area of Jizhou,Tianjin,since the year that ecological conservation redline was demarcated to 2024. The changes in human activities year by year are analyzed to provide basic data for the supervision of the ecological conservation redline. The countermeasures and suggestions to reduce human interference are discussed and put forward,which is of great significance for improving the quality of ecological conservation redline ecosystem and the level of management and protection in the northern mountainous area of Jizhou.

Key words: northern mountainous area of Jizhou, ecological conservation redline, remote sensing monitoring, human activities