【摘要】 对广西西北部地区退化土地再造林项目中的8种造林模式人工林的碳贮量进行了初步的预估及比较分析,在项目计入期内,各造林模式人工林的单位面积碳贮量顺序依次为马尾松林(65.41 t/hm2)>马尾松+红荷混交林(63.33 t/hm2)>杉木林(59.43 t/hm2)>马尾松+枫香混交林(59.18 t/hm2)>秃杉(57.59t/hm2)>酸枣林(45.83 t/hm2)>光皮桦林(45.26 t/hm2)>桉树林(42.70 t/hm2)。各造林模式人工林地上部分的单位面积碳贮量占其单位面积总碳贮量百分比的排序依次为马尾松林(83.33%)>马尾松+红荷混交林(82.55%)>马尾松+枫香混交林(82.48%)>桉树林(82.10%)>杉木林(82.03%)、秃杉林(82.03%)>光皮桦林(81.24%)>酸枣林(77.58%),地上部分碳贮量远远大于地下部分碳贮量。更多还原

【Abstract】 Preliminary study and comparative analysis of carbon stock of different afforestation models of reforestation on degraded lands were conducted in northwest Guangxi.The results showed that: in the crediting period,the order of carbon stock of different afforestation modes was Pinus massoniana forest(65.41t/hm2) > Pinus massoniana + Schina wallichii forest(63.33t/hm2) > Cunninghamia lanceolata forest(59.43t/hm2) > Pinus massoniana + Liquidambar formosana forest(59.18t/hm2) > Taiwania flousiana forest(57.59 t/hm2)> Choerospondias axillaris forest(45.83 t/hm2) > Betula luminifera forest(45.26 t/hm2) > Eucalyptus forest(42.70 t/hm2).The order of percent of the carbon stock of above-ground part in the total carbon stock of corresponding model was Pinus massoniana forest(83.33%) > Pinus massoniana + S.wallichii forest(82.55%) > Pinus massoniana + Liquidambar formosana forest(82.48%) > Eucalyptus forest(82.10%) > Cunninghamia lanceolata forest(82.03%),Taiwania flousiana forest(82.03%) > Betula luminifera forest(81.24%) > Choerospondias axillaris forest(77.58%),the carbon stock in above-ground part was larger distinctly than that in underground part.更多还原