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Inspire Session

Session: : Tropical Forests & Global Change: Biogeochemical Responses and Opportunities for Cross-Sites Comparisons

INS 22-6 - Overview of the nutrient-enabled CNP version of ELM-FATES and connections to tropical forests carbon stocks

Wednesday, August 9, 2023

10:00 AM – 11:30 AM PDT

Location: C123

Presenting Author(s)

JH

Jennifer Holm

Lawrence Berkeley National Laboratory, United States

Co-author(s)

RK

Ryan G. Knox

Lawrence Berkeley National Laboratory, United States
XW

Xinyuan Wei

OakRidge National Laboratory
AW

Anthony P. Walker

Environmental Sciences Division, Oak Ridge National Laboratory
Oak Ridge, TN, United States
WR

William J. Riley

Lawrence Berkeley National Laboratory, United States

Due to the large carbon sink potential of tropical forests, correctly representing nutrient controls on plant processes within ecosystem models is required. However, how plant nutrient availability regulates carbon allocation is a key source of uncertainty. We present an overview of the new nutrient competition, acquisition, and extensible approach of nutrient and carbon allocation within plants, in the demographic vegetation model FATES that is coupled to the land surface model ELM. Results of the nutrient-enabled ELM-FATES, including a dynamic fine-root optimization scheme and symbiotic nitrogen fixation, conducted by NGEE-Tropics team members at Panama and Puerto Rico sites will be shared.