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当前位置: 首页 > 文章 > 不同坡位杉木米老排混交林养分积累与分配比较 福建林业科技 2015 (3) 50-53
Position: Home > Articles > Comparison of Nutrient Accumulation and Distribution of Chinese fir Mixed Plantation with Mytilaria laosensis in Different Slope Positions Journal of Fujian Forestry Science and Technology 2015 (3) 50-53

不同坡位杉木米老排混交林养分积累与分配比较

作  者：
陈志云
单  位：
福建省南平峡阳国有林场
关键词：
杉木;米老排;养分积累;林下植被;凋落物层
摘  要：
在福建省建阳范桥国有林场开展了坡位对林分乔木层、林下植被和凋落物的N、P、K养分积累量及分配的影响研究。试验林分为杉木米老排混交林和杉木纯林,林龄均为16年生。结果表明:杉木米老排混交林乔木层的N和P在上坡和中坡的积累量均大于杉木纯林。不同林分乔木层N、P、K养分积累量均表现为N>K>P、下坡>中坡>上坡。从养分分配比例来看,不同林分乔木层N、P、K积累量占整个林分系统养分积累总量的90.25%~99.35%。上坡、中坡、下坡混交林林下植被N的分配比例均小于同一坡位的凋落物层。在不同坡位立地条件下,不同林分林下植被K分配比例为0.63%~6.65%,均明显大于凋落物。
译  名：
Comparison of Nutrient Accumulation and Distribution of Chinese fir Mixed Plantation with Mytilaria laosensis in Different Slope Positions
作  者：
CHEN Zhi-yun;Xiayang State-owned Forest Farm of Nanping City in Fujian Province;
关键词：
Chinese fir;;Mytilaria laosensis;;nutrient accumulation;;understory vegetation;;litter layer
摘  要：
Objected with the plantations of 16-year-old Cunninghamia lanceolata and its mixed forest with Mytilaria laosensis in Fanqiao 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 analyzed. 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.

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