福建林业科技
福建林業科技
복건임업과기
Journal of Fujian Forestry Science and Technology
2015年
3期
50-53
,共4页
杉木%米老排%养分积累%林下植被%凋落物层
杉木%米老排%養分積纍%林下植被%凋落物層
삼목%미로배%양분적루%림하식피%조락물층
Chinese fir%Mytilaria laosensis%nutrient accumulation%understory vegetation%litter layer
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。
在福建省建暘範橋國有林場開展瞭坡位對林分喬木層、林下植被和凋落物的N、P、K養分積纍量及分配的影響研究。試驗林分為杉木米老排混交林和杉木純林，林齡均為16年生。結果錶明：杉木米老排混交林喬木層的N和P在上坡和中坡的積纍量均大于杉木純林。不同林分喬木層N、P、K養分積纍量均錶現為N＞K＞P、下坡＞中坡＞上坡。從養分分配比例來看，不同林分喬木層N、P、K積纍量佔整箇林分繫統養分積纍總量的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層。在不同坡位立地條件下，不同林分林下植被K分配比例為0.63％～6.65％，均明顯大于凋落物。
재복건성건양범교국유림장개전료파위대림분교목층、림하식피화조락물적N、P、K양분적루량급분배적영향연구。시험림분위삼목미로배혼교림화삼목순림，림령균위16년생。결과표명：삼목미로배혼교림교목층적N화P재상파화중파적적루량균대우삼목순림。불동림분교목층N、P、K양분적루량균표현위N＞K＞P、하파＞중파＞상파。종양분분배비례래간，불동림분교목층N、P、K적루량점정개림분계통양분적루총량적90.25％～99.35％。상파、중파、하파혼교림림하식피N적분배비례균소우동일파위적조락물층。재불동파위입지조건하，불동림분림하식피K분배비례위0.63％～6.65％，균명현대우조락물。
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.
