林分平均木胸径总、平均和连年生长量最好。
The total, average and current annual increment of breast diameter of stand average stem are best.
林分标准郁闭度达0.85以上时，胸径连年生长量已下降，株数间伐强度以不超过30%为宜。
While standard degree of closing of the plantation reached 0.85, current annual increment of DBH started to decline, and the intensity of thinning should not exceed 30%.
瘠薄河滩地整地质量的优劣，不仅影响林木的当年成活，而且还影响林木成活后的生长发育和连年生长量。
Site preparation quality in poor overflow land influences not only on survival rate of forest in the same year, but also on growth and annual increment after survival of forest.
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