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天然林林地土壤资源及特性的调查、采样、化验分析 ,获得了 64个森林类型 30 6个天然林标准地林地土壤资料 ,分析测试土壤样品 1465个 ,测定理化指标 2 6780项次。对天然林土壤剖面进行了较全面的调查和分析。研究出天然林生物因子与其土壤理化因子相关紧密。总结出天然林林地土壤粗腐殖质、有机质、氮、磷的全量及速效量的含量 ,总孔隙度、非毛管孔隙度与水文特性均是落叶阔叶林 >常绿阔叶林 >针叶林的规律
Soil resources and characteristics of natural forest were investigated, sampled and analyzed. Soil samples from 64 forests of natural forest with the standard of 63 were obtained, and 1465 soil samples were analyzed and tested, and 2 6780 physical and chemical indexes were measured. The natural forest soil profile has been more comprehensive investigation and analysis. It was found that the natural forest biological factors are closely related to soil physico-chemical factors. The contents of crude humus, organic matter, nitrogen and phosphorus in soils were summarized. The total porosity, non-capillary porosity and hydrological characteristics of deciduous broad-leaved forest> evergreen broad-leaved forest> coniferous forest law