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本文主要论述了河北低山丘陵区自建国以来封育及被反复砍伐利用的栎林结构及其经营情况。仅山海关林场保存了一些30～50a生的栎林,阳坡为麻栎、栓皮栎及柞栎林,阴坡为蒙古栎林。林内幼树更新良好。萌生栎林早期生长迅速,10a后高生长逐渐减缓,50a生林分平均高才10m.1a生萌生栎林,每亩产枝干干重28.5～425kg不等。在土壤为中层-厚层厚度的条件下,栎林矮林作业轮伐期以3～5a为宜。采伐35～40a生栎林,每年每亩平均产值要略高于短轮伐期的栎林。在较好的立地条件下,还可采用选留木法的矮林作业,形成轮伐期不一致的具有2个林层的栎林。
This paper mainly discusses the structure and management of the Quercus acutissima forest which has been closed and cut and used repeatedly since the founding of the country in the hilly area of Hebei Province. Only the Shanhaiguan Forest Farm has preserved some oak forests of 30-50 years old. The sunny slope is Quercus acutissima, Quercus variabilis and Quercus mongolica forest, and the shady slope is Quercus mongolica forest. Saplings within the forest update well. The early growth of the germinated oak forest was rapid at the early stage, and the height growth gradually slowed down after 10 years. The average height of 50a stands was only 10m.1a, and the dry weight per mu was 28.5- 425kg. Under the medium-thick soil thickness condition, the rotation period of Quercus acrali forest was 3 ~ 5a. Harvesting 35 ~ 40a raw oak forest, the average output value per mu per year is slightly higher than the short rotation of the oak forest. In the better site conditions, we can also use the election of the law of the woods of the Picking operations, the formation of the rotation is inconsistent with two forest layers of oak forest.