摘要
采用实测树高生长量及相对应的中央直径的方法 ,研究了酒泉地区 19~ 2 1年生樟子松人工林的树高、直径生长量 ,建立了生长量与当年气象因子的对应关系 ;结合计算机软件分析手段 ,对影响嘉峪关及酒泉的樟子松人工林生长量的气象、土壤因素进行了分析 ,建立了樟子松回归预测模型。研究结果表明 :年蒸发量、日照时数、≥ 10℃积温、极端最高气温、阳离子总量、阴离子总量及全盐量是影响樟子松生长的主要气象、土壤指标 ,年平均气温、无霜期、极端最低气温、pH值、全K及有机质含量是次要指标 ,年降水量、气温日较差及全N是补充指标 ;建立的樟子松树高、直径生长量预测模型相关紧密 ,可用于樟子松树高和直径生长量的预测和管理。
Based on actual height increment and its corresponding central diameter, the growth of tree height and diameter of 21-year-old Pinus sylvestris var. mongolica plantations in Jiayuguan and Jiuquan Cities was studied, and a correlative formula for growth and meteorological factors was also set up. Combined with software analysis by computer, the meteorological and soil factors influencing growth of Pinus sylvestris var. mongolica were analyzed. Results indicated that annual evaporation, sun lighting, ≥10℃ accumulated temperature, extreme high temperature, total cation, total onion and total salt are the dominant factors, average temperature, frostless period, extreme low temperature, pH value, total K and organic matter are secondary ones, and annual precipitation, temperature diurnal range and total N are supplement ones. As a result, two prediction models for tree height and diameter were established, which can be applied to the prediction of tree height and diameter as well as the management of Pinus sylvestris var. mongolica.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2003年第5期10-12,共3页
Journal of Northeast Forestry University
基金
甘肃省科技厅资助项目
甘肃省重点科学技术推广项目