Topography, Diversity, and Forest Structure Attributes Drive Aboveground Carbon Storage in Different Forest Types in Northeast China

Forests regulate air quality and respond to climate change by storing carbon. Assessing the driving factors of forest aboveground carbon (AGC) storage is great importance for management. We assumed that different types would affect relationship between species richness, stand density, individual tree size variation, AGC. In order test verify it, we analyzed inventory data 206 fixed plots (20 m × 20 m) Jingouling Forest Farm, taking advantage piecewise structural equation model (pSEM) explore effects diversity, structure attributes, topography on AGC in Wangqing Jilin Province. addition, this study, aimed investigate whether (species topography) influenced more significantly than random factor (forest type). According results pSEM, selected jointly explain impact 33% storage. The density positive, variation negative. Species richness has direct indirect impacts storage, significant through variation. Both elevation slope are negatively associated with type explains 12% which means predictors varies across types. provide a scientific basis protection management decision natural forests northeastern China.