Honghua Ruan is a Professor at Nanjing Forestry University, where he currently serves as Director of the Wetland Ecology Research Center. He has previously held key administrative positions, including Vice Dean of the College of Forest Resources and Environment and Dean of the College of Biology and the Environment. He earned his Bachelor of Science degree in Forestry in July 1984 and his Ph.D. in Ecology in June 1998, both from Nanjing Forestry University, and began his academic career as a faculty member immediately after graduation. He obtained his Master of Science degree in Ecology from Beijing Forestry University in April 1990. Appointed Associate Professor in the Department of Forestry at Nanjing Forestry University in April 1995, he later advanced to the rank of Professor. From March 1999 to September 2002, he conducted international research as a Postdoctoral Fellow, Research Associate, and Visiting Professor at prestigious institutions, including the University of Puerto Rico, the Institute for Tropical Forest Ecosystems, and the Southern Forest Experiment Station International Forestry Institute in the United States. His research during this period focused on biogeochemical cycling, soil ecology, and global climate change, and he actively participated in the U.S. Long-Term Ecological Research (LTER) Program at the Luquillo Experimental Forest.