CAJ | 학술논문

根据黑龙江省森林收获表、生物量相容性相对生长方程及叶片与细根周转率数据，估算小兴安岭林区森林主要树种净初级生产力( NPP)与年龄的关系，并结合森林生态系统碳循环模型 InTEC 模型和 NPP 与年龄的关系，估算1901—2008年间小兴安岭森林 NPP的时空变化。结果表明：幼龄林 NPP随林分年龄的增长而迅速增加，进入成熟年龄 NPP达到最大，随后逐渐减少，直至达到稳定值；小兴安岭人工林的 NPP大于天然林，天然针叶林的固碳能力大于天然阔叶林与针阔混交林；1901—2008年间小兴安岭森林NPP整体呈现增加趋势，与工业前期1901年相比，2008年小兴安岭森林NPP增加了30%；森林NPP受海拔影响，呈现出中部偏高、北部与南部偏低的趋势。
근거흑룡강성삼림수획표、생물량상용성상대생장방정급협편여세근주전솔수거，고산소흥안령림구삼림주요수충정초급생산력( NPP)여년령적관계，병결합삼림생태계통탄순배모형 InTEC 모형화 NPP 여년령적관계，고산1901—2008년간소흥안령삼림 NPP적시공변화。결과표명：유령림 NPP수림분년령적증장이신속증가，진입성숙년령 NPP체도최대，수후축점감소，직지체도은정치；소흥안령인공림적 NPP대우천연림，천연침협림적고탄능력대우천연활협림여침활혼교림；1901—2008년간소흥안령삼림NPP정체정현증가추세，여공업전기1901년상비，2008년소흥안령삼림NPP증가료30%；삼림NPP수해발영향，정현출중부편고、북부여남부편저적추세。
In this study,net primary productiviby ( NPP ) data at various stand ages for eight major forest types in Xiaoxing’an Mountains in northeast China were estimated from stand yield tables with consideration of the total biomass increment and foliage and fine-root turnovers. Then,we estimated the spatial and temporal changes in NPP according to NPP-age relationships and InTEC model. The results indicated that the forest NPP increased quickly at young ages,reached the maximum value at middle age (10 -40 years old),and then decreased to a relative stable level at old ages. NPP of planted stands in Xiaoxing’an Mountains was larger than the natural forest. Natural coniferous forest can accumulated more carbon than natural broad-leaved mixed forest and natural coniferous and broad-leaved mixed forest. Forest NPP in Xiaoxing’an Mountains in 1901-2008 presented an increase trend,NPP in 2008 increased by 30 percent more than that in 1901. Forest NPP was higher in middle part and lower in northern and southern part because of the elevation effects on NPP.