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云浮县是半山区,集体所有制山地面积1 96万亩。群众向来有栽培杉林习惯,当地“三江杉”节疏格多,誉满县内外。1964年实行国社合作造林以来,杉木有很大发展,造林保存面积达30万亩(其中国合杉22万亩),1976年列为中央杉林基地县。早期造的国合杉已于1978年开始间伐,列为基地县后新造的幼林也陆续郁闭成林。营林工作重点从营造转为管护为主,因此了解和掌握本地人工杉林的生长进程,对提高经营管理水平,有着十分重要的意义。
Yunfu County is Mid-levels, the collective ownership of mountain area of 1 96 hectares. The masses have always been cultivated Cunningham habitat, local “Sanjiang Cedar ” section sparse grid, Yu Man county inside and outside. Since the implementation of the cooperation of state agencies in afforestation in 1964, there has been a great development of Chinese fir. The area for afforestation has reached 30 million mu (including 22 million mu of Chinese fir trees). In 1976, it was listed as the Central Shanlin Base County. The early construction of the country’s fir has begun in 1978, thinning, as a new base after the counties have also been newly established young Lin closed forest. The focus of forest management changes from establishment to management and maintenance. Therefore, it is of great significance to understand and master the growth process of the local artificial forest and improve the management level.