基于森林清查数据的三峡库区林地立地质量评价  

Site Quality Evaluation in Three Gorges Reservoir Region Based on Forest Inventory Data

作　　者：张超[1] 彭道黎[1] 黄国胜[2] 马炜[2] 

机构地区：[1]北京林业大学,北京100083 [2]国家林业局调查规划设计院

出　　处：《东北林业大学学报》2015年第11期56-61,共6页Journal of Northeast Forestry University

基　　金：国家林业局"948"项目(2015-4-32);科技基础性工作专项(2013FY111600-1)

摘　　要：基于三峡库区森林资源一类清查数据和林地小班数据,分主要树种(组)建立树高—胸径曲线,编制立地指数表,选取立地因子构建立地指数模型,估测库区样地和小班立地指数,综合多个树种(组)评价结果,得到三峡库区林地质量等级及空间分布。结果表明:利用胸径替换年龄来拟合立地指数曲线和编制立地指数表的方法是可行的;立地指数估测模型经方差分析及相关性检验,达到显著相关水平,调整决定系数R2均达到0.95以上;三峡库区小班立地质量为III级的小班,所占比例高达78.71%,认为三峡库区林地质量总体属于中等水平。Based on continuous forest inventory data and forestland vector data,tree height-diameter curves of main tree species（ group） were established,and the site index tables were compiled. Site index models were generated with some site factors and used for estimating plot and sub-compartment site index in Three Gorges Reservoir Region（ TGRR）. After integrating the results of multiple species（ group）,the space level distribution map of forestland site quality was constructed. The site index curves and site index tables can be compiled with diameter at breast height（ DBH） instead of age. The adjusted R2 were all above 0.95,at a significant level of p〈0.01,and the models are suitable for the estimation of site index. The area proportion of sub-compartment with moderate site quality classes was 78.71% in TGRR.

关 键 词：一类森林清查 林地小班 立地指数 逐步回归 立地质量 

分 类 号：S758.5[农业科学—森林经理学]