【摘要】 根据野外调查和观测,对子午岭次生林区的灌木和森林植被地上部各部分生物量中有机碳的储量进行了比较和分析。在灌木群落中,狼牙刺、虎榛子和沙棘群落中的茎杆与枝条中有机碳的储量分别占地上部生物量中有机碳储量的70.59%～75.33%、95%和83.84%;茎杆和枝条及叶片生物量中有机碳储量的顺序为沙棘>狼牙刺>虎榛子;灌木群落中草本层生物中有机碳储量的顺序为狼牙刺>沙棘>虎榛子;地被层有机物质中有机碳储量的顺序为沙棘>虎榛子>狼牙刺。狼牙刺群落、虎榛子群落和沙棘群落中有机碳的储量分别为15.06～16.25t/hm2、8.84t/hm2和25.67t/hm2。在森林植被中,山杨-辽东栎混交林、山杨林、白桦林、辽东栎林等落叶阔叶林的茎与枝条中有机碳的储量,占地上生物量中总储碳量的88.66%～97.75%、侧柏林和人工油松林针叶林的茎和枝条中有机碳的储量,约占地上生物量中总储碳量的83%,除过人工油松林外,乔木林中灌木层中有机碳储量的顺序为白桦>山杨-辽东栎>山杨>侧柏>辽东栎,乔木林中草本层生物量中有机碳的储量为0.5～0.6t/hm2,人工油松林的草本层生物量中有机碳的储量为1.26t/hm2,天然乔木林下地被物中有机碳的储量,约占群落地上部总有机碳储量的7%～13%。山杨-辽东栎、白桦、山杨、辽东栎、侧柏及人工油松林中有机碳的储?更多还原

【Abstract】 Organic carbon storage in the shrub and forest biomass was analyzed and compared according to the field investigation and measures in secondary forest region of Ziwuling mountain. The organic carbon stored in the stems and branches of Vetchleaf sophora（ Sophora viccifolia ）, David ostryopsis（ Ostryopsis davidiana ）, Seabuckthorn（ Hippophae rhamnoides ） accounts for 70.59%～75.33%, 95% and 83.84% of the total organic carbon stored in the aboveground biomass, respectively. The amounts of organic carbon stored in the stems and branches decrease in the order of Seabuckthorn> Vetchleaf sophora> David ostryopsis. The amounts of organic carbon stored in the herbal biomass in shrub community decrease following the order of Vetchleaf sophora > Seabuckthorn > David ostryopsis. The organic carbon stored in the litter of floor layer is found in the order of Seabuckthorn > David ostryopsis > Vetchleaf sophora. Total carbon storage in the aboveground parts of Vetchleaf sophora, David ostryopsis and Seabuckthorn is 15.06～16.25 t/hm², 8.84 t/hm² and 25.67 t/hm², resptectively. In Poplar（ Populus davidiana ）-Oak（ Quercus liaotungensis ）, Poplar（ Populus davidiana ）, White birch（ Betula platyphylla ）, and Oak（ Quercus liaotungensis ）forest, carbon storage in the stems and branches of trees accounts for 88.66%～97.75% of the total carbon stored in the aboveground biomass, and about 83% for Oriental arborritae（ Platycladus orientalis ）and Planted Chinese pine（ Pinus tabulaeformis ）forest. The amounts of carbon storage in the shrub biomass in the forests decrease following the order of White birch>Poplar-Oak>Poplar>Oriental arborritae>Oak. The carbon storage in the herbal biomass in the forests ranges 0.5～0.6 t/hm², and 1.26 t/hm² for that in the planted Chinese pine plantation. The carbon stored in the forest floor accounts for 7%～13% of the grant total carbon stored in all aboveground parts. The total carbon storage in aboveground parts of Poplar-Oak, White birch, Poplar, Oak, Oriental arborritae, and Planted Chinese pine is 84.90 t/hm², 91.01 t/hm², 56.10 t/hm², 107.66～166.43 t/hm², 94.32 t/hm² and 18.43 t/hm², respectively. It can be deduced that the shrub and forest in this region are the sink of CO₂ in the atmosphere.更多还原