Journal
ENVIRONMENTAL CHEMISTRY LETTERS
Volume 20, Issue 2, Pages 1529-1538Publisher
SPRINGER HEIDELBERG
DOI: 10.1007/s10311-021-01372-y
Keywords
Old-growth forests; Large old trees; Carbon sequestering; Fomitopsis officinalis
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Old forests containing ancient trees play a crucial role in ecosystem preservation, climate issues, and therapeutic potential. They contribute to carbon sequestration and nitrogen fixation, control below-ground conditions for tree regeneration, create micro-climates to mitigate global warming, and provide essential habitats for endangered species. Old trees also produce phytochemicals with biomedical properties and host particular fungi with untapped medicinal potential.
Old forests containing ancient trees are essential ecosystems for life on earth. Mechanisms that happen both deep in the root systems and in the highest canopies ensure the viability of our planet. Old forests fix large quantities of atmospheric CO2, produce oxygen, create micro-climates and irreplaceable habitats, in sharp contrast to young forests and monoculture forests. The current intense logging activities induce rapid, adverse effects on our ecosystems and climate. Here we review large old trees with a focus on ecosystem preservation, climate issues, and therapeutic potential. We found that old forests continue to sequester carbon and fix nitrogen. Old trees control below-ground conditions that are essential for tree regeneration. Old forests create micro-climates that slow global warming and are irreplaceable habitats for many endangered species. Old trees produce phytochemicals with many biomedical properties. Old trees also host particular fungi with untapped medicinal potential, including the Agarikon, Fomitopsis officinalis, which is currently being tested against the coronavirus disease 2019 (COVID-19). Large old trees are an important part of our combined cultural heritage, providing people with aesthetic, symbolic, religious, and historical cues. Bringing their numerous environmental, oceanic, ecological, therapeutic, and socio-cultural benefits to the fore, and learning to appreciate old trees in a holistic manner could contribute to halting the worldwide decline of old-growth forests.
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