Study on Soil Physicochemical Properties along Forest Age of Pinus tabulaeformis Plantations
In order to explore the impact of forest ages on the physicochemical characteristics of soil under pi nus tabulaeformis plantation and compare the variation characteristics of the soil physicochemical characteris- tics under pinus tabulaeformis plantation of different forest age, typical sample zones were set in Shangluo in this study. The combination method of field investigation and laboratory analysis was adopted. The results showed that organic matter, total nitrogen and pH value reduced with the increase of the forest age among the soil depth of 0--20 cm and 20 40 cm. The other physical and chemical parameters also changed, but did not show obvious increase or decrease. Total nitrogen and pH value reduced with the increase of the forest age among the tween organic nitrogen and p chemical propt soil depth of 40--60 cm. Correlation analysis showed that there was a positive correlation be- matter, total nitrogen and pH value, while an extremely significant correlation between total H value was observed. There was no significantly correlation between the other physical and ertles.
国家科技期刊平台
NSTL
万方数据
维普
