Influence of plant communities and soil properties during natural vegetation restoration on arbuscular mycorrhizal fungal communities in a karst region
Influence of plant communities and soil properties during natural vegetation restoration on arbuscular mycorrhizal fungal communities in a karst region
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自然植被恢复过程中植物群落和土壤性质对喀斯特地区丛枝菌根真菌群落的影响
DOI：
10.1016/j.ecoleng.2015.04.089
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发表时间：
2015-09-01
影响因子：
3.8
通讯作者：
Su, Yirong
中科院分区：
文献类型：
--
作者：
Liang, Yueming;He, Xunyang;Su, Yirong
丛枝菌根（AM）真菌在植物的建植和生长过程中起着重要作用，是植被更新的关键。研究了退化喀斯特生态系统植被恢复过程中AM真菌多样性、植物多样性和土壤性质之间的关系。采用焦磷酸测序法对西南喀斯特地区4种典型植被恢复生态系统（草丛、灌丛、次生林和原始林）AM真菌群落的遗传多样性和组成进行了研究。通过野外调查，对植物物种多样性、丰富度和均匀度进行了评价。测量了土壤的基本特性。植物物种多样性和土壤养分含量从灌丛到原始林逐渐增加，但AM真菌多样性的大小顺序为灌丛>次生林>原始林<灌丛。不同生态系统AM真菌和植物群落组成差异显著（p < 0.05）。AM真菌的丰富度与植物多样性指数（Shannon-Wiener指数、均匀度和丰富度）和土壤性质（土壤有效磷、土壤有机碳和pH）均呈显著负相关（p < 0.05）。结果表明，喀斯特地区AM真菌的多样性和组成受植物群落和土壤养分条件的影响。(C)2015 Elsevier B. V.版权所有。
Arbuscular mycorrhizal (AM) fungi are crucial for vegetation regeneration because they play an important role in plant establishment and growth. We investigated the relationships among AM fungal diversity, plant diversity, and soil properties during vegetation restoration in degraded karst ecosystems. Pyrosequencing approach was used to determine the genetic diversity and composition of AM fungal communities in four typical ecosystems of vegetation restoration (tussock (TK), shrub (SB), secondary forest (SF), and primary forest (PF)) in a karst region of southwest China. The diversity, richness, and evenness of plant species were evaluated through field surveys. Basic soil properties were measured. Plant species diversity and soil nutrient contents increased with vegetation restoration from tussock to primary forest, but the diversity of AM fungi followed the order of shrub approximate to secondary forest approximate to primary forest < tussock. The composition of AM fungi and plant communities differed significantly between ecosystems (p < 0.05). The richness of AM fungi was negatively correlated with both the plant diversity (the indices of plant Shannon-Wiener, evenness and richness) and soil properties (soil available phosphorus (AP), soil organic carbon (SOC) and pH) (p < 0.05). Redundancy analysis showed that the AM fungal communities closely linked to plant richness, soil organic carbon, soil available phosphorus and pH. These results suggest that the diversity and composition of AM fungi in karst region are influenced by plant communities and soil nutrient conditions. (C) 2015 Elsevier B.V. All rights reserved.