On August 1, 2011 (July 2, 2011 in the lunar calendar), China forestry scientist Dong Naijun passed away. Dong Naijun, a China forestry scientist, was born in Shanghai on October 10, 1931. The life of Mr. Dong Naijun, a famous forester, forestry educator, professor of Beijing Forestry University and doctoral supervisor of national key disciplines, was forever fixed at 12:37 on August 1, 2011. He was a man of self-discipline, constant progress and efficiency. In life, he has a famous saying: 8 hours of sleep, 6 glasses of water, 30 minutes of sun, two legs, and more brain and less mouth. Mr Dong Naijun, who was 80 years old, is a major pioneer in the discipline of forest management and management in China and the main pioneer in China's forestry informatization industry. He has made fruitful achievements in science and education, has won many honors and major awards, and is a highly respected academic leader in the field of forest management in my country. Mr. Dong Naijun has devoted his life to the research and promotion of forest resource monitoring technology, and to the construction and transformation of forest management disciplines in China. He translated and published "Forest Measurement", participated in the compilation of the "Forest Survey Manual", proposed the establishment of a national forest resource continuous inventory system and forest stratified sampling and other survey techniques, and took the lead in compiling and approving the backbone of forestry majors in national forestry colleges and universities. The teaching material "Forest Resources Management" has cultivated a large number of business backbones for the national forestry system. With his pioneering, innovative and enterprising spirit, Mr. Dong Naijun is good at using systematic science to conduct strategic thinking, and has achieved a series of influential major achievements in many aspects such as sustainable forest management and management, leap-forward development of forestry, forest rights system reform, and forestry policies. The results have made positive contributions to the construction of modern forestry in the country.