摘要
根据地位指数的大小将白桦林分划分为好、中、差３个类型，通过不同类型样地上的解析木资料分析，证明白桦的胸径和材积生长率存在着良好的相关关系。经过优选，建立了不同类型白桦林分的胸径与材积生长率相关模型，并依此编制出白桦一元材积生长率表，为准确预测白桦材积生长率提供了理论上的依据。
According to the site index, the stands of Betula platyphylla were divided into three types that is high, middle and low in growth. By stem analysis of the trees harvested in the sample plots of different types, high growth correlation between diameter at breast height and volume of Betula platyphylla was proved. The correlation models of growth rate between diameter at breast height and volume in different types were established, and based on these models, local volume table of Betula platyphylla was drawn up.
出处
《河北林果研究》
1997年第4期326-330,共5页
Hebei Journal of Forestry and Orchard Research
关键词
胸径
材积生长率
相关分析
白桦
diameter at breast height
growth rate of volume
correlation analysis
Betula platyphylla
