长江上游典型区域森林土壤结构体形成和稳定性机制分析

Study on Aggragate Formation and Stability Mechanism of Forests Soil in Typical Region of Upper Reaches of the Yangtze River

良好的土壤结构对于森林水文生态功能的发挥具有重要的意义.以长江上游亚高山天然林、丘陵人工林土壤为研究对象,通过取样分析土壤团聚体数量组成及相关性质,运用相关分析明确土壤团聚体形成和稳定的主要稳定因子,提出了临时性团聚体、亚稳态团聚体、稳定性团聚体的形成机制和进化模式.

It is very important of well-formed soil structure to forest hydro-ecological function. Soil samples are taken from subalpine natural forest and hilly area artificial forest of upper reaches of the Yangtze River,and quantitative component of aggragates and the physical and chemical properties are also analyzed. The main factors of soil aggragates formation and stability were maken certain using correlation analysis,and the aggragate formation and stable model of temporary aggragate,sub-stable aggragate,and stable aggragate is put forward.