论文部分内容阅读
1 引言安徽丘岗区主要分布在安徽中部,该区交通便利,劳力资源丰富,林业经营管理的水平较高,天然次生植被极少,已建成为安徽重要的工业人工林基地之一,主栽树种是湿地松、火炬松、马尾松和杉木。大面积的工业人工纯林造成地力衰退、病虫危害、森林火灾和水土流失等生态危机逐步显现,已引起有识之士的普遍担忧。要缓解上述生态危机,在建立工业人工林的同时,适量栽培伴生树种,丰富植被类
1 Introduction Anhui Yugang District is mainly distributed in the central part of Anhui Province. The area is easily accessible and has abundant labor resources. It has a high level of forestry management and management and has few secondary natural vegetation. It has been established as one of the important industrial plantation bases in Anhui Province. Planted species are Pinus elliottii, Pinus taeda, Pinus massoniana and Chinese fir. Large-scale industrial artificial pure forest caused by the decline of soil fertility, pests and diseases, forest fires and soil erosion and other ecological crisis gradually emerged, has aroused widespread concern of people of insight. To ease the above ecological crisis, while establishing industrial plantations, appropriate cultivation of associated trees, rich vegetation