甘比写作-tree-vivi

The oak tree (Quercus species) is undisputed king of the Western tree. It can live an average of 600 years and grow to reach a height of more than 130 feet (40m).

With a majestic and towering trunk, the oak tree is straight upward-growing and branches out to the top. The oak tree needs nutriment for growing massively. Roots of the oak can grow nearly 1.5m in the first year of a life; they grow sideways to organize deep and broad root web, absorbing water and minerals for photosynthesis to produce energy.

Oaks are deciduous, which means their leaves bloom and wither with the whim of seasons. You can see lobed young leaves in spring. As summer comes, the higher temperature accelerating photosynthesis, leaves of oak flourish. The leaves stop making chlorophyll in autumn, putting on colors of red, orange and bronze. The leaves fall away in winter and the tree keeps dormant till spring.

Oak trees start blooming and producing acorns as they are around 20 years old and most oak trees produce most flowers and acorns between the ages of 50 and 80. Oak trees bloom around in mid-March; they self-pollinate. With hanging yellowish-green male flowers, female flowers are hidden among the leaves. The fruit of oak, the acorn, with a flat cap at on side, is a kind of nut possessed dark stripe along its 1/2 inch length.

Oak trees are valued for both wildlife and human beings. Mosses use the bark of oak as a source of moisture to fuel prosperous growing, while leather curing product, the astringent and the wood for construction all are part of wild-range application of oak trees.