Generally speaking, the tree rings are more dense toward the shade, that is, the north.Because a ring is the annual growth of a big tree, and the growth of a big tree depends on the light conditions.For big trees, the light conditions facing south are definitely better than those facing north, so the growth of big trees facing south is more vigorous than that facing north, and the growth rings facing south are wider than those facing north.
1. Look at the direction: the annual rings of the big tree are wide and narrow. The wide and sparse side of the annual rings shows that the big tree is growing well, and it is facing the sunny side, that is, the south side.The narrow and dense side of the rings shows that the growth potential of the tree is poor, which is to the north of the shade.
2. Look at the age: a growth ring is the annual growth of a big tree. We can judge how many years a big tree has lived by looking at the number of growth rings.But if the temperature drops sharply in one year and then rises again, there are likely to be two rings in that year.
3. Look at the climate: The rings of a big tree are wide and narrow. If a big tree has many narrow rings, a very wide ring suddenly appears.This shows that the local environmental and climatic conditions were poor at the beginning, and the trees grew slowly, but later the climate was suitable, the trees grew rapidly, and a wide annual ring appeared.
