华南地区固氮与非固氮豆科树种叶片养分利用策略的对比研究
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江西省教育厅科技项目(GJJ170839)资助


Different Leaf Nutrient Use Strategies of Nitrogen-fixing and Non-nitrogen-fixing Leguminous Trees in South China
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  • YE Nan

    YE Nan

    College of Life Sciences, Gannan Normal University, Ganzhou 341000, Jiangxi, China;Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • LIU Hui

    LIU Hui

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • LUO Qi

    LUO Qi

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • LIN Yixue

    LIN Yixue

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • HOU Hao

    HOU Hao

    Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • YE Qing

    YE Qing

    College of Life Sciences, Gannan Normal University, Ganzhou 341000, Jiangxi, China;Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystem, Guangdong Provincial Key Laboratory of Applied Botany, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China;South China National Botanical Garden, Guangzhou 510650, China
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  • LAI Wenling

    LAI Wenling

    College of Life Sciences, Gannan Normal University, Ganzhou 341000, Jiangxi, China;Key Laboratory of Nanling Plant Resources Conservation and Utilization, Ganzhou 341000, Jiangxi, China
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    摘要:

    为探究富氮环境中固氮(nitrogen-fixing leguminous trees, NLT)与非固氮豆科树种(non-nitrogen-fixing leguminous trees, n-NLT)的叶片养分利用策略差异,以华南地区5种NLT植物[水黄皮(Pongamia pinnata)、大叶相思(Acacia auriculiformis)、朱樱花(Calliandra haematocephala)、海南红豆(Ormosia pinnata)、台湾相思(Acacia confusa)]和3种n-NLT植物[油楠(Sindora glabra)、中国无忧花(Saraca dives)、银珠(Peltophorum tonkinense)]为对象,测定其单位质量叶片碳(C)、氮(N)和磷(P)含量及其比值、单位面积叶片最大净光合速率(Aarea)和叶片光合氮、磷利用效率(PNUE、PPUE)等功能性状。结果表明,NLT的单位质量叶片N、P含量和Aarea均显著高于n-NLT,而两者PNUE和PPUE无显著差异;尽管两类植物单位质量叶片C含量无显著差异,但NLT的叶片C: N和C: P显著低于n-NLT。因此,这表明华南地区NLT比n-NLT具有更强的养分获取和光合能力,但叶片养分利用效率更低。

    Abstract:

    To reveal leaf nutrient use strategies of nitrogen-fixing leguminous trees (NLT) and non-nitrogen-fixing leguminous trees (n-NLT) under the nitrogen-rich environments in South China, five NLT (Pongamia pinnata, Acacia auriculiformis, Calliandra haematocephala, Ormosia pinnata, Acacia confuse) and three n-NLT (Sindora glabra, Saraca dives, Peltophorum tonkinense) were selected, the concentrations of carbon (C), nitrogen (N) and phosphorus (P) per leaf mass, leaf C: N and C: P, maximum net photosynthetic rate per leaf area (Aarea), photosynthetic nitrogen use efficiency (PNUE) and photosynthetic phosphorous use efficiency (PPUE) were measured. The results showed that N and P contents and Aarea of NLT were significantly higher than those of n-NLT, whereas their PNUE and PPUE had not significant difference. Although there was no significant difference in leaf C content between two types of species, leaf C: N and C: P of NLT were significantly lower than those of n-NLT. Therefore, these indicated that NLT in South China had stronger nutrient acquisition and photosynthetic capacity than N-NLT, but lower leaf nutrient utilization efficiency.

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叶楠,刘慧,罗琦,林忆雪,侯皓,叶清,赖闻玲.华南地区固氮与非固氮豆科树种叶片养分利用策略的对比研究[J].热带亚热带植物学报,2023,31(3):334~340

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  • 收稿日期:2021-11-30
  • 最后修改日期:2022-03-01
  • 在线发布日期: 2023-05-24
  • 出版日期: 2023-05-20
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