Response of soil microbes to Carex meyeriana meadow degeneration caused by overgrazing in inner Mongolia

Ji, Guoxu; Hu, Guo‐fu; Liu, Guofu; Bai, Zijian; Li, Bing; Li, Dandan; Hongying, L; Cui, Guowen

doi:10.1016/j.actao.2022.103860

Cited by 5 publications

(2 citation statements)

References 58 publications

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“…Long-term overgrazing can reduce plant diversity, dominant species abundance, soil nutrients, and water content in grassland ( Wu et al, 2014 ; Ji et al, 2022 ; Luo et al, 2022 ), which is reflected by the plant Shannon–Weiner index, SWC, TOC, and TN reduction in the UM grassland in our study. Human interference can negatively alter soil properties in edge areas, such as TOC, TN, and C/N ( Malmivaara-Lämsä et al, 2008 ).…”

Section: Discussionmentioning

confidence: 59%

Overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community

Fang,

Lu,

Zhang

et al. 2024

Front. Microbiol.

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A “grazing ban” policy has been implemented in some pastoral areas in China to fence degraded grasslands for restoration. However, fencing increased grazing pressures in unmanaged grasslands. Based on the mechanism of negative edge effect, we investigated whether overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community using a sample in Hulun Buir of Inner Mongolia, in order to optimize the “grazing ban” policy. Plant and soil were sampled in areas 30 m away from the fence in unmanaged grassland (UM) and in areas 30 m (adjacent to UM) and 30–60 m (not adjacent to UM) away from the fence in the grazing-banned grassland (F-30 m and F-60 m). The species richness and diversity of plant communities and the ASV number of fungal communities significantly decreased in F-30 m and UM, and the Simpson index of the bacterial community significantly decreased in F-30 m compared with F-60 m. The abundance of fungi involved in soil organic matter decomposition significantly decreased and the abundance of stress-resistant bacteria significantly increased, while the abundance of bacteria involved in litter decomposition significantly decreased in UM and F-30 m compared with F-60 m. The simplification of plant communities decreased in soil water and total organic carbon contents can explain the variations of soil microbial communities in both UM and F-30 m compared with F-60 m. The results of PLS-PM show that changes in plant community and soil microbial function guilds in UM may affect those in F-30 m by changing soil water and total organic carbon contents. These results indicate that overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community. The grazing-banned grasslands should be adjusted periodically in order to avoid negative edge effects.

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Section: Discussionmentioning

confidence: 59%

Overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community

Fang,

Lu,

Zhang

et al. 2024

Front. Microbiol.

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“…Overgrazing is the use of pasture lands beyond the limit of their production capacity or an improper use in terms of grazing period and duration [10,13], and can lead to significant changes in biomass [14,15], floristic composition, diversity [16,17], and soil conditions [18,19]. Globalization is bringing changes and global demand in food circulation and is intensifying the pressure on regional arable lands [20,21].…”

Section: Introductionmentioning

confidence: 99%

For a Better Quality of Beef: The Challenge from Growing Livestock on Limited Grasslands with a Production–Consumption Balance Perspective

Xue,

Yan,

Zhen

2023

Foods

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The growing population, the transition dietary towards animal-based products, and the preference for the brand of grass-feeding livestock are bringing increasing pressure on natural grasslands, especially for dry-land areas. The Xilingol League of China is famous for its free-range livestock product, however, overgrazing and herders’ benefits damage are always serious issues for this semi-arid grassland region. This study focuses on the relationship between the supply of natural grassland and the consumption of free-range livestock in the Xilingol League, and this study employed the grassland carrying capacity as the index to judge the sustainability states and its trends of the local grass-feeding system. Satellite data production of net primary production was used for grassland production, statistical livestock data and the consumption model were used for actual forage consumption, and empirical key informant interview data were used to obtain a more comprehensive understanding. The results show that: (1) the natural grassland carrying capacity of the Xilingol League fluctuated, showing improvement from 2000 to 2021; (2) the grassland management needs to be more diversified in different regions with different natural conditions; and (3) while the demand for free-range, high-quality beef is increasing, attention should be paid to the carrying capacity of natural pastures and more consideration should be taken of the benefits of balancing the livelihood of herders, policy strategies, and the customers’ preferences. Potential ways of doing this include employing technologies to improve livestock production, and further exploring and promoting the economic value of the free-range livestock and the geographical indication to get the economic–ecological win-win situation. The research framework and results would be beneficial to reveal the potential threats in pastoral areas and provide support for the optimization of the regional grass-feeding breeding system, especially in middle-income countries.

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Light grazing reduces the abundance of carbon cycling functional genes by decreasing oligotrophs microbes in desert steppe

Zhao,

Guo,

Suo

et al. 2024

Applied Soil Ecology

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Response of soil microbes to Carex meyeriana meadow degeneration caused by overgrazing in inner Mongolia

Cited by 5 publications

References 58 publications

Overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community

Overgrazing on unmanaged grassland interfered with the restoration of adjacent grazing-banned grassland by affecting soil properties and microbial community

For a Better Quality of Beef: The Challenge from Growing Livestock on Limited Grasslands with a Production–Consumption Balance Perspective

Light grazing reduces the abundance of carbon cycling functional genes by decreasing oligotrophs microbes in desert steppe

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