The second paragraph of the poem, through imagination, shows that the virgin forest is the place where our ancestors lived, played, grew and evolved; Primitive forest is the "cradle of ancestors" because it provides most elements for human survival and evolution.
Primitive forest can provide a broad living space for wild animals and has the function of maintaining biodiversity and ecological balance; At the same time, virgin forests can also purify air, regulate climate, conserve water, conserve soil and water, enhance soil fertility and mitigate natural disasters.
Extended data:
Primitive forest refers to a complete biosphere that is naturally formed and has not been destroyed by human beings. Primitive forest is the core of terrestrial ecosystem. Primitive forest is not only a green forest wetland, but also a comprehensive ecosystem, including the food chain relationship between animals and plants.
In virgin forests, the decline of one species will affect the survival of other species, which is more prominent in tropical rainforests. After people destroy the virgin forest, even if they replant a large number of forests artificially, they can't make up for the ecological impact caused by forest destruction.
Baidu encyclopedia-primeval forest