Thursday, April 25, 2019

Nature's stairs and pygmy forest

On the northern coast of California, nature created its own bonsai woods. She uses iron cemented carbide as a container instead of a flower pot. Instead of using scissors to trim, she uses a highly acidic, non-fertile soil and a hard layer of land to stop the trees, and there is too much water in the winter. Her tools are waves, heavy rainfall and uplift caused by the continental plate.

The story of the Gnomish Forest is part of a larger ecological staircase story. This is the best story of Jug Handle State Reserve, 2 miles south of Fort Bragg, National Road No. 1 in Mendocino County. There is a 2-1 / 2 mile nature trail that leads visitors to nature's terraces from the seaside.

From the corner of the first terrace, you can gaze at the ocean as it deposits sand and gravel on the future terrace. The earth has been steadily improving the coast. "The land where the land is elevated is very rare, so you have soil a million years ago," said Teresa, a professor at the Redwood College in Prague. During this period, sea level fell and rose as the continental glaciers advanced and retreated. As the sea surface decreases, it deposits sediment on flat beaches. As it rises, seawater raging on the higher beaches now, and the beach will form a sea cliff. Each of the five terraces along Jug Handle Creek is about 100 feet and 100,000 to 200,000 years taller than the five terraces below it.

On the lowest terrace, grass and wildflowers such as California poppies and coastal lupines enrich old beach sediments. This coastal grassland is maintained by salt spray from the ocean, leaving the trees in the bay.

On the second terrace, the soil has been cultivated in coniferous forests. Then, a leaching process called podzolization, which is common for coniferous rainforests, depletes the soil.

Rainwater is slowly discharged on flat terraces, absorbing acid from the needles, and bringing iron and alkaline minerals into the soil to form a hard disk.

"Acid soils and hard soils have really created gnome forests," the scholars said. In fact, this soil is almost like acid and vinegar - the most acidic soil in the world.

On the third terrace, after 300,000 to 600,000 years of leaching, the contrast began. As you stroll through the lush redwoods and Douglas fir forests, you will see the incredible shrinking behavior of the surrounding trees; you are finally in the gnome forest.

Here, the ground is a ragged grayish white, with only lichens and sparse deciduous clothes. Wild, pygmy cypresses and duckweeds, as well as the popular bishop's pine trees, are rarely found outside the pygmy forest, and barely live in this depleted soil. In the case of a hard bottom less than one foot deep, a 2 foot high, half inch diameter cypress tree may be mature from 80 to 100 years old. The other vegetation in the pygmy forest is mainly composed of shrubs of the acid-loving wasteland family, including the gorgeous pink rhododendrons and cranberries.

Another great place to explore the pygmy forest nearby - especially young children - is located in Van Dam State Park. There is also a self-help tour manual that provides an explanation along a short path.

Perhaps the strangest thing about the Gnomish Forest is that it is a climactic community. On terraces, the process of ecological succession - gradually replacing another plant community - from grasslands to pine forests to pygmy forests. But it's over - with the gnomes. As long as the conditions remain the same, no other plant community will replace it, and the ecological staircase will carry its bonsai woods over time.




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