摘要
对刺槐萌生林的生长和生物产量的研究结果表明:2年生的更新苗。以株高,地径和株数对比,萌芽苗优于根蘖苗。从树干解析表明,萌生林树高的连年生长量在第4年达到最大值(2.0m);而胸径和材积的连年生长量第8年时最大,分别为1.15cm和0.00775m^3/株。9年生萌生林乔木层地上部分生物量为54.826t/ha,年平均净生产量为10.229t/ha.a。与实生林相比,在相同的生长条件下,萌生林具有较高的木材量和生产力。
Describes the growth and biomass of coppice forest of Robinia pseudo -acacia in north Weihe river of Shaanxi province. The incerments of 2-years-old regenerated saplings, including basal diameter, height and numb -er per hectare, were analyzed. The saplings of sprouts were superior to those of stools. Based on stem analysis data, the annual height incerment of coppice forest reached the maximum (up to 2. Om ) at the forth year; while the breast-height diameter and volume growth reached the maximum (1.15cm and 0.00775m3 respectvely) at the eighth year. The above-ground biomass of arbor layer amounted to 54.826 t/ha, and mean annual production amounted to 10.229t/ha.a. Under same growth conditions, there would be relative higher volume and productivity in coppice forest than in seedling crop of Robinia pseudoacacia.
出处
《西北林学院学报》
CSCD
1991年第1期16-21,共6页
Journal of Northwest Forestry University
关键词
刺槐
萌生林
生长
生物量
Robinia pseudoacacia
Coppice forest
Growth
Biomass
