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本文报导作者1983—1985年在五营(48°07′N、129°15′E)、铁力(46°59′N、128°07′E)、带岭(47°N、129°E)、尚志(45°13′N、127°58′E)地区所做大青杨人工林生产力的研究。 20年生密度为1400株/ha的林分现存量,叶1.69t/ha,枝11.98t/ha,干材51.6t/ha,LAI=1.18±0.3091。林分年生产力3.43t/ha·a,在总辐射能<110Kcal/cm~2·a地区,林分最大生产力为3.86/ha·a,在110—120Kcal/ha·a地区,最大生产力为4.66t/ha·a。大青杨太阳能利用率0.54％,模糊聚类分析表明,在谷地、阶地营造的大青杨人工林生产力最高,而处在坡地上部、东南坡上部的林分生产力最低。年轮生长的功率谱测定检出,大青杨年轮生长存在2.5、3.2、6.3年的周期,年轮生长的周期性主要是受气象因子影响所致。
This paper reports the authors’ results from 1983 to 1985 at Wuying (48 ° 07’N, 129 ° 15’E), Tieli (46 ° 59’N, 128 ° 07’E) and Ridge (47 ° N, 129 ° E ) And Shangzhi (45 ° 13’N, 127 ° 58’E) areas. The existing stock of 20-year-old plants with a density of 1400 plants / ha was 1.69 t / ha, 11.98 t / ha and 51.6 t / ha for dry materials, with LAI = 1.18 ± 0.3091. The annual productivity of forest is 3.43t / ha · a. The maximum productivity of forest stands is 3.86 / ha · a in total radiant energy <110Kcal / cm ~ 2 · a, and the maximum productivity is 4.66 in 110-120Kcal / ha · a t / ha · a. Populus euphratica solar energy utilization rate of 0.54%, fuzzy cluster analysis showed that valley, terraces to create the highest productivity of Populus plantation, while in the upper part of the slope, the southeast slope of the lowest stand productivity. The results of power spectrum measurement of growth of annual rings show that the growth of annual rings of Populus euphratica is 2.5, 3.2, 6.3 years and the periodicity of growth of annual rings is mainly caused by meteorological factors.