摘要
兰考泡桐（Paulowniaelongata）是淮北平原砂姜黑土上的主要造林树种．为了提高造林质量，提高林业经营与决策的科学水平，开展了该区兰考泡桐立地类型划分、立地质量评价及生长模型的研究．通过调查该立地上兰考泡桐的生长情况．应用数量化理论筛选该类土壤影响兰考泡桐生长的主导因子，划分了9个立地类型．应用Richards函数为导向曲线，以平均优势木胸径为评价指标，导出了地位指数模型．编制了数量化地位指数得分表，实现了有林地与无林地的统一评价．根据兰考泡桐在这一地区栽培密度小的特点，建立了平均本胸径和平均本材积的单木生长模型．
Through investigating the growth of Paulownia elongata on Shajiang black soil of Huaibei Plain and applying a quantitative theory to Select the principal factors thataffect Paulownia elongata growth,the soil region has been divided into 9 site types. By using Richards function as the guide curve and BHD of average superior trees as the appraisal target,a site index model has been set up,and a site index mark table has been compiled. The latter makes it possible to consistently appraise the site quality of both forestland and non-stocked land in a saing system. Considering that the planting density ofPaulownia elongata in the region is small,this paper has also established individual tree growth models for average trees' BHD and timber volume.
出处
《中南林学院学报》
CSCD
1997年第3期12-17,共6页
Journal of Central South Forestry University
基金
国家"八五"攻关课题!"黄淮海平原
豫西黄土丘陵兰考泡桐立地分类
立地质量评价与生长模型的研究"
关键词
兰考泡桐
立地类型
立地质量
砂姜黑土
Paulownia elongata
site type
site quality
growth model
Huaibei Plain
