2019•Acta Ecologica SinicaRequires access

Effect of vegetation restoration patterns on the carbon storage in a rocky desertification ecosystem

卢立华 LU Lihua, 农友 NONG You, 李华 Li Hua, 杨予静 YANG Yujing, 明安刚 MING Angang, 雷丽群 LEI Liqun, 何日明 HE Riming, 陈琳 Chen Lin

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Abstract

为揭示石漠化生态系统碳储量对植被恢复模式的响应,在广西天等县中度石漠化山地,研究了吊丝竹纯林(Dendrocalamus minor D)、任豆纯林(Zenia insignis Z)、任豆、蚬木(Buerretiodendron hsienmu)和顶果木(Acrocarpus fraxinifolius)混交林(mixed plantation M),以及相应同龄封育林(DCK、ZCK、MCK)的碳储量。结果表明:人工林碳储量显著高于相应同龄封育林的碳储量,D、Z、M人工林碳储量分别为67.75、66.56、121.20 t/hm2,而DCK、ZCK、MCK封育林仅为49.75、52.89、60.86 t/hm2。碳储量在乔木层、地被物层、土壤层分配排序因生态系统类型而异,如M:乔木层 > 土壤层 > 地被物层;D和Z:土壤层 > 乔木层 > 地被物层;DCK、ZCK和MCK:土壤层>地被物层>乔木层。此外,M、D、Z乔木层年平均碳储量差异显著,而封育林尚未形成乔木层,其植被碳储量则随封育时间的增加而提高,即MCK > ZCK > DCK。可见,在中度石漠化山地,植被恢复模式显著影响生态系统碳储量及其分配。人工造林相对于封山育林更能快速促进植被恢复、形成乔木林,从而提高生态系统碳储量。

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为揭示石漠化生态系统碳储量对植被恢复模式的响应,在广西天等县中度石漠化山地,研究了吊丝竹纯林(Dendrocalamus minor D)、任豆纯林(Zenia insignis Z)、任豆、蚬木(Buerretiodendron hsienmu)和顶果木(Acrocarpus fraxinifolius)混交林(mixed plantation M),以及相应同龄封育林(DCK、ZCK、MCK)的碳储量。结果表明:人工林碳储量显著高于相应同龄封育林的碳储量,D、Z、M人工林碳储量分别为67.75、66.56、121.20 t/hm2,而DCK、ZCK、MCK封育林仅为49.75、52.89、60.86 t/hm2。碳储量在乔木层、地被物层、土壤层分配排序因生态系统类型而异,如M:乔木层 > 土壤层 > 地被物层;D和Z:土壤层 > 乔木层 > 地被物层;DCK、ZCK和MCK:土壤层>地被物层>乔木层。此外,M、D、Z乔木层年平均碳储量差异显著,而封育林尚未形成乔木层,其植被碳储量则随封育时间的增加而提高,即MCK > ZCK > DCK。可见,在中度石漠化山地,植被恢复模式显著影响生态系统碳储量及其分配。人工造林相对于封山育林更能快速促进植被恢复、形成乔木林,从而提高生态系统碳储量。

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Available abstract

为揭示石漠化生态系统碳储量对植被恢复模式的响应,在广西天等县中度石漠化山地,研究了吊丝竹纯林(Dendrocalamus minor D)、任豆纯林(Zenia insignis Z)、任豆、蚬木(Buerretiodendron hsienmu)和顶果木(Acrocarpus fraxinifolius)混交林(mixed plantation M),以及相应同龄封育林(DCK、ZCK、MCK)的碳储量。结果表明:人工林碳储量显著高于相应同龄封育林的碳储量,D、Z、M人工林碳储量分别为67.75、66.56、121.20 t/hm2,而DCK、ZCK、MCK封育林仅为49.75、52.89、60.86 t/hm2。碳储量在乔木层、地被物层、土壤层分配排序因生态系统类型而异,如M:乔木层 > 土壤层 > 地被物层;D和Z:土壤层 > 乔木层 > 地被物层;DCK、ZCK和MCK:土壤层>地被物层>乔木层。此外,M、D、Z乔木层年平均碳储量差异显著,而封育林尚未形成乔木层,其植被碳储量则随封育时间的增加而提高,即MCK > ZCK > DCK。可见,在中度石漠化山地,植被恢复模式显著影响生态系统碳储量及其分配。人工造林相对于封山育林更能快速促进植被恢复、形成乔木林,从而提高生态系统碳储量。

Key concepts: Vegetation (pathology), Environmental science, Ecosystem, Forestry, Desertification, Soil carbon, Carbon fibers, Agroforestry

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