Abstract: The “four reservoirs” concept that takes forests as reservoirs of water， grain， money and carbon is a scientific assertion made by Xi Jinping on the basis of the in-depth understanding of the relationship between man and nature， between high-quality development and ecological environment protection. An innovative development of Marxist ecological outlook on nature， it is a vivid illustration of the functions of forests in conserving water， wealth， grain and carbon.This concept reflects the dialectical relationship of harmony and unity between man and nature， interprets the people centered value pursuit， implies the direction for the pathof human development， and provides the outlook and methodology for the construction of ecological civilization. The concept of “four reservoir” should be implemented under the guidance of publicity and education on public opinion and with supports of financial services and technological innovation， aiming at scientific management and shared development by focusing on strengthening detail management， so as to promote the construction of a new pattern of modern forestry development that combines ecological， social and economic benefits.

Key words: forest, four reservoirs, ecological civilization, forestry, green low-carbon development, carbon sink