基准年龄立地质量评价的影响分析-林业科学研究.PDF

林 业 科 学 研 究 2010, 23( 2) : 283 ～ 287 Forest Research 文章编号: 1001- 1498( 2010) 02-0283-05 基准年龄立地质量评价的影响分析 陈永富 ( 中国林业科 学研究 院资源信息研究所, 北 京 10009 1) 关键词: 杉木; 单形立地指数; 多形立地指数; 立地质量; 基准年龄 中图分类号: S7 11 文献标识码: A Research on Standard Age Affecting Analysis of Site Quality Evaluation CHEN Yong-fu ( Research Institute of Forest Resource Information Techniques, Chinese Academy of Forestry, Beij ing 10009 1) Abstract: Taking Chinese fir as researched obj ect and Richards function as basic model, the models of single site index and polymorphic site index were established to analyze the affect of stand standard age on the result of site quality evaluation with the ways of ANOVA, multicompare, curve tourning point and change of dominant tree height between site classes. The result showed that with the site class getting higher, curve tourning point volue getting lower, it was impossible to define the standard age before stand growth reached steady. If stand standard age is too small, it would lead to a higher site calss in polymorphic site index evaluation; The difference was notable among stand dominant height from difference standard age, if standard age is too small, it would lead to a lower site class in single site index evalution. Taking the age steady-grown stand as standard age would not make notable affect on the result of site quality evaluation. Key words: Chinese fir; single site index; polymorphic site index; site quality; standard age 立地指森林或其他植被类型生存的空 间及与之 条件的不同, 产生了森林立地质量评价 的不同方法, 相关的自然因子 的综合, 在一定时 间 内相对不变 。 概括起来主要包括年龄 - 材积表达法; 年龄 - 林分 立地质量是指在某一立地上既定森林或其他植被类 平均树高表达法; 年龄 - 林分优势高表达法; 直径 - 型的生产潜力, 立地质量与立地上生长 的树木或植