Biodiv Sci ›› 2025, Vol. 33 ›› Issue (3): 24341. DOI: 10.17520/biods.2024341 cstr: 32101.14.biods.2024341
• Original Papers:Ecosystem Diversity • Previous Articles Next Articles
Mo Xiaomei1, Zhang Qi1, Yang Jiaxin1, Zheng Guo1(), Hu Zhongmin2(
), Zhang Xiaoke3, Liang Siwei4,*(
), Cui Shuyan1,5,*(
)
Received:
2024-07-29
Accepted:
2024-09-15
Online:
2025-03-20
Published:
2025-03-24
Contact:
*E-mail: siweiliang0102@163.com; cui.shu.yan@163.com
Supported by:
Mo Xiaomei, Zhang Qi, Yang Jiaxin, Zheng Guo, Hu Zhongmin, Zhang Xiaoke, Liang Siwei, Cui Shuyan. Responses of soil nematode metabolic rate and energy flow to nitrogen addition and precipitation pattern change in a typical northern grassland[J]. Biodiv Sci, 2025, 33(3): 24341.
Fig. 2 Effects of precipitation pattern change and nitrogen addition on soil nematode metabolic rate of each trophic group (mean ± SE). N, Nitrogen addition; P, Precipitation pattern change; N × P, The interaction between nitrogen addition and precipitation pattern change. N0 and N10 are treatments without and with nitrogen, respectively. Different letters indicate significant differences among different precipitation patterns. * P < 0.05, ** P < 0.01, *** P < 0.001.
Fig. 3 Effects of precipitation pattern change and nitrogen addition on soil nematode energy flux of different trophic groups (mean ± SE). N, Nitrogen addition; P, Precipitation pattern change; N × P, The interaction between nitrogen addition and precipitation pattern change. N0 and N10 are treatments without and with nitrogen, respectively. Different letters indicate significant differences among different precipitation patterns. * P < 0.05, ** P < 0.01, *** P < 0.001.
Fig. 4 Effects of precipitation pattern change and nitrogen addition on energy flux and fresh biomass distribution within soil nematode food web. N0 and N10 are treatments without and with nitrogen, respectively. R indicates basal resources.
Fig. 5 The nematode metabolic rate and energy flux were related to environmental factors by partial Mantel tests. N0 and N10 are treatments without and with nitrogen, respectively. BF, Bacterivores; FF, Fungivores; PP, Plant parasites; OP, Omnivores/predators; SM, Soil moisture; SOC, Soil organic carbon; DOC, Dissolved organic carbon; MBC, Microbial biomass carbon; MBN, Microbial biomass nitrogen; NH4+-N, Ammonium nitrogen; NO3--N, Nitrate nitrogen; AGB, Aboveground biomass; BGB, Belowground biomass.
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