Comparison of Nutrient Accumulation and Distribution of Chinese fir Mixed Plantation with Mytilaria laosensis in Different Slope Positions
Objected with the plantations of 16-year-old Cunninghamia lanceolata and its mixed forest with Mytilaria laosensis in Fan-qiao State-owned Forest Farm of Jianyan City in Fujian Province,the N,P,K accumulation and distribution of arbor layer,understory vegetation and litter layer of the pure stand and mixed forest in different slope positions was separately determined and ana-lyzed.Main results showed that:compared with Chinese fir pure plantation in uphill and mid slope stand conditions,both of N and P accumulation of the mixed forest were more.The ranking of the accumulation of N,P and K in arbor layer showed that N>K>P,and downhill>mid slope>uphill,which amounted percentage from 90.25%to 99.35% of the total nutrient accumulation in the whole stands.Compared with the litter layer of the mixed stand in different slope positions,all of N distribution percentages of understory vegetation were lower.For K distribution percentages of understory vegetation in different slope positions,which amounted percentage from 0.63%to 6.65%,were higher than the litter layer.
Chinese firMytilaria laosensisnutrient accumulationunderstory vegetationlitter layer
国家科技期刊平台
NSTL
万方数据
维普
