CAJ | 학술논문

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。
기우삼협고구삼림자원일류청사수거화임지소반수거，분주요수충（조）건립수고—흉경곡선，편제입지지수표，선취입지인자구건입지지수모형，고측고구양지화소반입지지수，종합다개수충（조）평개결과，득도삼협고구임지질량등급급공간분포。결과표명：이용흉경체환년령래의합입지지수곡선화편제입지지수표적방법시가행적；입지지수고측모형경방차분석급상관성검험，체도현저상관수평，조정결정계수R2균체도0．95이상；삼협고구소반입지질량위III급적소반，소점비례고체78．71％，인위삼협고구임지질량총체속우중등수평。
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.