Even-aged stands

Stands where all trees are born or initiated at about the samepoint in time. While the tree sizes will increasingly vary as thestand ages , the calendar age of all trees is about the same when the stand is regenerated. Even aged stands have definite beginnings and endings.

Characteristics of even-aged forest

• bell-shaped curve.
• As the stand age, the bell shape is retained, but the total no. of tree decreases and the bell flattens and shifts to right. Form 100 year rotation or more, age variation up to 25% may be allowed

Growth

• Early immature stage before canopy closure when rate of diameter growth is little affected by competition
• Middle stage (responsive): on canopy closure, ring width decreases but responds quickly to treatment such as thinning and fertilizing
• Final stage(mature stage): When ring width is narrow and is not so markedly responsive to treatment.