基于meta分析的放牧强度对中国温性草甸草原生态系统的影响

doi:10.12160/j.issn.1672-5190.2025.06.006

Abstract

Abstract: [Objective] To clarify the effects of grazing intensity on temperate meadow grassland ecosystems in China. [Methods] A meta-analysis was conducted by searching CNKI, VIP, Wanfang, and Web of Science databases from January 2000 to June 2025. The Chinese keyword combinations were "soil microorganisms or bacteria or fungi or actinomycetes", "grazing intensity", and "temperate meadow grassland"; the English keywords included "grazing or livestock or stocking rate", "grazing capacity", and "temperate meadow grassland". Literature meeting the inclusion criteria was screened to examine the responses of plant communities, soil nutrients, and soil microorganisms in China's temperate meadow grasslands to grazing intensities. [Results] Compared with ungrazed plots, light grazing significantly decreased microbial biomass nitrogen content by 37.3% and significantly increased the light fraction organic carbon content by 26.2%. Moderate grazing significantly reduced aboveground biomass and microbial biomass nitrogen content by 100.3% and 41.8%, respectively. Under heavy grazing, aboveground biomass, soil organic carbon, and total nitrogen contents were significantly reduced by 122.2%, 23.8%, and 26.7%, respectively. [Conclusion] The results indicate that heavy grazing significantly degrades ecosystem functions of temperate meadow grasslands in China and is detrimental to ecosystem sustainability. In contrast, light grazing is an appropriate intensity for maintaining grassland ecological functions. These findings provide a scientific basis for formulating grazing management strategies for temperate meadow grasslands, suggesting that reducing grazing intensity can achieve a balance between ecological conservation and livestock production.

Key words: temperate meadow grasslands in China, grazing intensity, ecosystems, meta-analysis

CLC Number:

S8-1
812

HAO Dongkai¹, JIN Dongyan², NA Ya¹, JIANG Rong¹, LIU Hao¹, SUN Nan¹, CUI Yanfeng³, BAO Qinglong⁴. Effects of Grazing Intensity on Temperate Meadow Grassland Ecosystems in China Based on a Meta-analysis[J]. Animal Husbandry and Feed Science, 2025, 46(6): 37-44.

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Effects of Grazing Intensity on Temperate Meadow Grassland Ecosystems in China Based on a Meta-analysis

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