杉木、檫树混交林生物量及林地土壤肥力研究

通过对杉木檫树混交林与杉木纯林和檫树纯林的造林实验，在同一阳坡上三个实验区中设立600m^2标准地，分别对纯林、混交林的生物量和林地土壤性状进行测定，对标准地上标准木用全重法分别树干、枝、叶和根进行乔木层生物量测定，对土壤按常规方法测定其物理性质和化学性质。研究结果表明：混交林的生物量大于纯林，对林地土壤的物理和化学性质的影响效果优于杉木纯林而劣于檫树纯林。

Fir, Sassafras tree forest biomass and forest soil fertility research

Sassafras through fir trees and fir forest and the pure of the pure Sassafras tree plantin experiments on the same sunny area on three experiments in the establishment of standard 600m^2, respectively, of pure and mixed forest biomass and soil properties determination, The standard wood on the ground with standard all-law were re-trunk, branches, leaves and roots of trees for biomass-determination, according to the conventional methods of soil on the determination of the nature of the chemical and physical properties. The results show that： the mixed forest biomass is greater than pure, soil physical and chemical properties of Chinese fir is more effective than pure and worse than pure Sassafras tree.