生态学报2017，Vol.37Issue(7)：2282-2289,8.DOI:10.5846/stxb201511292394
广西不同林龄杉木、马尾松人工林根系生物量及碳储量特征
Biomass and carbon storage in roots of Cunninghamia lanceolata and Pinus massoniana plantations at different stand ages in Guangxi
摘要
Abstract
Cunninghamia lanceolata and Pinus massoniana plantations cover a large area in Guangxi.In the present study,dynamics of biomass and carbon storage in roots of the two types of plantations were investigated.The plantations were selected according to five stand ages,i.e.,young forest,middle-aged forest,near mature forest,mature forest and over mature forest.Two methods,i.e.,whole soil excavation and soil auger,were adopted for root sampling.Roots were divided according to trees,shrubs,or grass.The results showed that total root biomass in C.lanceolata and P.massoniana plantations ranged from 9.06 to 31.40 and 7.91 to 53.40 Mg/hm2,respectively.Total root biomass increased with stand age.The fine root biomass in C.lanceolata plantations decreased initially but then increased with stand age,but that in P.massoniana plantations decreased with stand age.Root carbon content in different soil horizons changed in the order of tree ＞ shrub ＞ herb roots.Carbon storage in roots of both types of plantations changed similarly to root biomass.The carbon storage of roots in different soil horizons ranged from 7.56 to 21.97 and 8.86 to 29.95 Mg/hm2,respectively,for C.lanceolata and P.massoniana plantations.Overall,the carbon storage of roots was dominated by tree roots that increased with forest age.关键词
碳储量/根系/林龄/杉木/马尾松Key words
carbon storage/roots/stand age/Cunninghamia lanceolata/Pinus massoniana引用本文复制引用
韩畅,宋敏,杜虎,曾馥平,彭晚霞,王华,陈莉,苏樑..广西不同林龄杉木、马尾松人工林根系生物量及碳储量特征[J].生态学报,2017,37(7):2282-2289,8.基金项目
中国科学院科技服务网络计划STS项目(KFJ-EW-STS-092) （KFJ-EW-STS-092）
国家自然科学基金项目(31370485,31370623,31400412,31460135) （31370485,31370623,31400412,31460135）
广西科技惠民计划项目(桂科转1599001-6) （桂科转1599001-6）
广西特聘专家资助项目 （）
