Essential Role of Symbiotic Microorganisms Supporting Forests in East Asia under Changing Environment

Abstract

Regeneration success of forests is strongly dependent on symbiotic microorganisms, that is, arbuscular mycorrhiza (AM) and ectomycorrhiza (ECM). In the northeastern part of Asia, larch and birch are used as timber resources, and in the south, fir, cedar, cypress, and oak are used as timber resources. Planted forests have reached the time of harvesting and/or thinning, and after the forestry practices, it is expected that they will become mixed forests equipped with resistance to weather damage; that is, drought, heat, typhoons, etc. On the other hand, the physical production environment has changed greatly, therefore, we investigated the growth of the major trees and the role of mycorrhizal fungi in the northeastern Asia. Elevated O3 decreased growth, colonization rates of ECM, and the biodiversity; however, elevated CO2 moderated or increased them in larch. Except for disease of rot and damping off, we discuss wise use of symbiotic microbe in far East Asia.

Projecting the future redistribution of Pinus koraiensis (Pinaceae: Pinoideae: Pinus) in China using machine learning

“…Nearly half of the world's P. koraiensis germplasm resources are located in the Little Khingan Mountains region, Yichun City, China, in which is home to the largest, most primeval forest in Asia, possessing many natural top-tier communities of P. koraiensis . Natural P. koraiensis forest absorbs large amounts of CO 2 and contributes to climate change regulation, making it a prominent coniferous tree species of great value for the maintenance and protection of the environment in East Asia (Dai et al, 2013;Wang et al, 2023). Therefore, the response of P. koraiensis forests is vital in the face of climate change.…”