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黄波, 王悦, 邓小兵, 等. 高寒草地不同退化类型对植物多样性与种间关系的影响研究—以理县为例[J/OL]. 四川林业科技, 2024, 45[2024-07-11]. DOI: 10.12172/202404280001
引用本文: 黄波, 王悦, 邓小兵, 等. 高寒草地不同退化类型对植物多样性与种间关系的影响研究—以理县为例[J/OL]. 四川林业科技, 2024, 45[2024-07-11]. DOI: 10.12172/202404280001
HUANG B, WANG Y, DENG X B, et al. Study on the Impact of Different Degradation Types on Plant Diversity and Interspecific Association in Alpine Grasslands: A Case Study of Lixian[J/OL]. Journal of Sichuan Forestry Science and Technology, 2024, 45[2024-07-11]. DOI: 10.12172/202404280001
Citation: HUANG B, WANG Y, DENG X B, et al. Study on the Impact of Different Degradation Types on Plant Diversity and Interspecific Association in Alpine Grasslands: A Case Study of Lixian[J/OL]. Journal of Sichuan Forestry Science and Technology, 2024, 45[2024-07-11]. DOI: 10.12172/202404280001

高寒草地不同退化类型对植物多样性与种间关系的影响研究—以理县为例

Study on the Impact of Different Degradation Types on Plant Diversity and Interspecific Association in Alpine Grasslands: A Case Study of Lixian

  • 摘要: 群落结构和种间关系是草地群落退化和评价的主要指标。通过四川省理县草原健康与退化评估工作,分析调查样地物种多样性、种间联结性和生态位宽度,探讨高寒草地不同退化类型各物种之间的相互作用和种间关系,有助于高寒草地的科学恢复及合理利用。研究结果表明理县调查区主要有145种植物,隶属于37科,106属,其中糙野青茅、白莲蒿和早熟禾为重要值前三的优势物种。毒害型退化草地中,毒害草和本土种的生态位重叠值增加,加剧种间竞争程度,联结关系较其他退化类型中物种更加紧密;石漠型退化草地中,主要物种的生态位重叠数量最低,较多植物种对联结松散,种间联结AC值主要以负联结为主,明显区别于未退化草地和毒害型草地。因此,针对两种不同退化类型草地应采用不同恢复措施,因地制宜,因时制宜的实现可持续性恢复。

     

    Abstract: The structure of plant communities and interspecies relationships are key indicators for assessing degradation in grasslands. This study, through an evaluation of grassland health and degradation in Lixian County, Sichuan Province, analyzed species diversity, interspecies association, and niche breadth in grasslands under different types of degradation. By examining the interactions and relationships among species in alpine grasslands, the study aims to provide a basis for the scientific restoration and rational utilization of these grasslands. The survey in Lixian identified 145 plant species across 37 families and 106 genera, with Deyeuxia scabrescens, Artemisia stechmanniana, and Poa annua being the top three dominant species. In toxicologically degraded grasslands, increased niche overlap between toxic grass and native species intensified interspecies competition and connectivity. Conversely, rock desertification grasslands showed the least niche overlap among primary species, with more loose interspecies connections and predominantly negative connectivity values, distinctly different from undegraded and toxicologically degraded grasslands. Therefore, restoration measures tailored to different degradation types should be implemented to achieve sustainable recovery in both geographical and temporal contexts.

     

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