杉木中幼龄林立地质量的生长截段评价  

Site Quality Evaluation for Middle and Juvenile Stands of Chinese Fir by Using Internode Length.

作　　者：郑勇平[1] 劳勤 余国信 宋志强 贺汉良 

机构地区：[1]浙江林学院,淳安县林业局,临安县林业局

出　　处：《浙江林学院学报》1995年第1期6-12,共7页Journal of Zhejiang Forestry College

摘　　要：通过杉木生长截段与地位指数相关性的回归分析，证明生长截段法作为浙江省杉木人工中幼林的立地质量评价手段是切实可行的。生长截段法有助于解决浙江省大面积杉木中幼龄林的立地评价难题。研究结果表明，采用起测高度为胸高上方第２轮枝以上的５个完整节间长度作为杉木立地质量评价指标，精度最高。为实际应用，文中还编制了用这种生长截段间接或直接进行立地质量评价的数表，建立了数量化生长截段回归模型及得分表。Regression analysis showed that the length of five internodes from the second branch above DBH is a pract ical and cffective index for evaluating site quality of middle and juvenile stands of Cunninghamia lanccolata,In order to be used conveniently,the tables to evaluate directly or indirectly site qua-lity by using internodes and the quantitat ive internode regressive model were established.

关 键 词：杉木 森林生境 质量 评价 生长截段 

分 类 号：S791.270.6[农业科学—林木遗传育种] S758.57[农业科学—林学]