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Response of soil nematode community structure and metabolic footprint to nitrogen addition in alfalfa fields on the Loess Plateau.
Li, Liangliang; Luo, Zhuzhu; Nian, Lili; Li, Lingling; Niu, Yining; Prasath, Barathan Balaji; Haider, Fasih Ullah; Zhang, Yaoquan; He, Renyuan; Liu, Jiahe.
Afiliación
  • Li L; Grassland Science College, Gansu Agricultural University, Lanzhou, 730070, China.
  • Luo Z; Grassland Science College, Gansu Agricultural University, Lanzhou, 730070, China. luozz@gsau.edu.cn.
  • Nian L; College of Resources and Environmental Sciences, Gansu Agricultural University, Lanzhou, 730070, China. luozz@gsau.edu.cn.
  • Li L; State Key Laboratory of Arid Habitat Crop Science, Lanzhou, 730070, China. luozz@gsau.edu.cn.
  • Niu Y; College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China.
  • Prasath BB; State Key Laboratory of Arid Habitat Crop Science, Lanzhou, 730070, China.
  • Haider FU; State Key Laboratory of Arid Habitat Crop Science, Lanzhou, 730070, China.
  • Zhang Y; Marine and Coastal Ecology Division, Gujarat Institute of Desert Ecology, Bhuj, 370001, India.
  • He R; Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou, 510650, China.
  • Liu J; College of Forestry, Gansu Agricultural University, Lanzhou, 730070, China.
Sci Rep ; 14(1): 17640, 2024 07 31.
Article en En | MEDLINE | ID: mdl-39085380
ABSTRACT
Nematodes serve as key indicators of soil health in ecological studies. Therefore, the current study examined the community structure and metabolic footprint of soil nematodes in alfalfa fields across varying levels of N supply in the semi-arid Loess Plateau. The findings offer theoretical guidance for the sustainable management of artificial alfalfa grasslands in this region. The research was based on alfalfa fields with different N application rates (0, 50, 100, 150 kg/ha2) as the research object, The shallow plate method was used to separate and extract soil nematodes, identify soil nematode groups, calculate ecological function index and metabolic footprint, and identify indicator species. A total of 6346 nematodes were isolated in this study, belonging to 27 genera and 19 families. Notably, the plant parasitic nematode Helicotylenchus was predominant. As N addition increased, the plant parasitic index (PPI) increased significantly. A N50 application significantly enhanced the soil nematode diversity index ( H ) and the free-living index (MI). The findings showcased a noticeable decrease in disturbance within the N50 soil nematode community. This resulted in a mature and stable community structure primarily attributed to the heightened abundance of omnivorous/predatory nematodes. Across various N levels, soil nematode communities underwent significant alterations in the soil food web structure through shifts in their metabolic footprint. Future strategies should focus on refining N management practices and integrating sustainable approaches like crop rotation and pest management. These efforts will contribute to guidelines ensuring artificial alfalfa grasslands lasting health and productivity.
Asunto(s)

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Suelo / Medicago sativa / Nematodos / Nitrógeno Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: China

Texto completo: 1 Base de datos: MEDLINE Asunto principal: Suelo / Medicago sativa / Nematodos / Nitrógeno Límite: Animals País/Región como asunto: Asia Idioma: En Revista: Sci Rep Año: 2024 Tipo del documento: Article País de afiliación: China