摘要
1966年在苏联弗拉基米尔州设立了“自然纪念林”固定标准地。该林分为Ⅰ_a地位级的单层混交天然林。组成为8松2云,林分年龄150年(松树),每公顷蓄积为927.1 m^3,其中用材占93.3％,木材剩余物占6.4％,薪材占0.3％。用材中98％可造锯材,2％造矿柱。经过15年,林分组成和地位级仍与期初相同。欧洲赤松平均树高增长1.3m;但云杉变化很小。欧洲赤松和云杉平均直径分别增长0.8和1.6 cm。林分内林木虽有枯死,但“自然纪念林”林分仍具有很高生产力,是俄罗斯珍贵的森林。
In 1966, we established the first permanent sample plot of "natural monument" category in Vladimirsky province of U. S. S. R. It was a natural mixed stand with single layer, and Ia site class. The composi tion is 8C2E, stand age was 150 and stand stocking was 972.1 m^3/ha. Workable wood made up 93.3％, waste 6.4％ and firewood only 0.3％. Workable wood may be used for producing sawn timber (98％)and supports for mines (2％). After 15 years, composition and site class of the sample plot remained the same. Average height of the pine increased by 1.3m, but spruce changed few. Average diameter in pine and spruce increased by 0.8 and 1.6cm. Even though trees dying off, this stand still has very high productivity, and is a precious stand.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
1989年第5期91-94,共4页
Journal of Northeast Forestry University
关键词
松树
云杉
混交林
林分
生长
Permanent sample plot
Growth
Pine
Spruce
