Effects of plant diversity and community structure on ecosystem multifunctionality under different grazing potentials in the eastern Eurasian steppe

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 934, P. 173128 - 173128

Published: May 9, 2024

Language: Английский

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Different contributions of plant diversity and soil properties to the community stability in the arid desert ecosystem

Frontiers in Plant Science, Journal Year: 2022, Volume and Issue: 13

Published: Aug. 25, 2022

As a one of the focuses ecological research, understanding regulation plant diversity on community stability is helpful to reveal adaption environmental changes. However, relationship between and still controversial due scale effect its influencing factors. In this study, we compared changes in different (i.e., species, functional, phylogenetic diversities) three communities riparian forest, ecotone community, desert shrubs), across spatial scales 100, 400, 2500 m2), then quantified contribution soil properties by using structural equation model (SEM) Ebinur Lake Basin Nature Reserve Xinjiang Uygur Autonomous Region NW China. The results showed that: (1) differed among (ecotone > shrubs forest). all decreased with increase (2) species diversity, richness mean pairwise distance were higher than that while nearest taxa as forest shrubs. (3) Soil ammonium nitrogen total phosphorus had significant direct negative positive effects stability, respectively. also indirectly affected adjusting diversity. interaction functional diversities regulated variation scales. Our suggested greater asynchronous caused composition traits impact stability. study provided theoretical support for conservation management biodiversity functions areas.

Language: Английский

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Modulation of drought adversities in Vicia faba by the application of plant growth promoting rhizobacteria and biochar

Microscopy Research and Technique, Journal Year: 2022, Volume and Issue: 85(5), P. 1856 - 1869

Published: Jan. 7, 2022

Drought is the greatest threat to world food security, seen as catalyst for great famines of past. Given that world's water supply limited, it likely future demand increasing population will further exacerbate drought effects. Therefore, present study was aimed investigate effect biochar and plant growth promoting rhizobacteria (PGPR) Sphingobacterium pakistanensis (NCCP246) Cellulomonas (NCCP11) on agronomic physiological attributes Vicia faba two varieties Desi (V1) Pulista (V2) under induced stress. The seeds were sown in earthen pots filled with 3 kg sand soil (1:2), (0 5% w/w) triplicate arranged complete randomized design. Analysis possessed 0.49 g cm-3 bulk density, 9.6 pH; 5.4 cmol kg-1 cation exchange capacity, 3.64% organic carbon EC 6.7 ds/m. Agronomic including seed LAI, LAR, SVI, %PHSI RWC improved by 30.4-180.4%, 14.37-47.20%, 37.64-50.91%, 18.21-30.80, 35.82-54.34% both co-application PGPR. Stomatal physiology epidermal vigor successfully application PGPR analyzed scanning electron microscopy (SEM). Photosynthetic pigments, flavonoids, phenols, proline glycine betaine amplified 58.33-173.8%, 50.59-130.33%, 46.58-86.62%, 46.66-109.30%, 35.74-56.10%, 21.96-77.22% So, work concluded that, combined could be an effective strategy alleviate adversities V. growing drastic ecosystems.

Language: Английский

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Plant α‐and β‐diversity, and soil microbial stoichiometry co‐regulate the alterations in ecosystem multifunctionality in response to grazing and N addition in a typical steppe

Land Degradation and Development, Journal Year: 2023, Volume and Issue: 34(10), P. 2849 - 2861

Published: Feb. 15, 2023

Abstract Despite their significance, how interactions of plant diversity at multiple spatial scales and soil microbial stoichiometry alter a series ecosystem functions (multifunctionality, EMF) in response to anthropogenic nitrogen (N) input herbivores are poorly known. We conducted 17‐year sheep grazing experiment with 6‐year N addition explore the impacts (0, 2.7, 5.3 8.7 ha −1 ) (N0, N5, N10 N20, i.e., 0, 5, 10 20 g m −2 yr , respectively) on grassland EMF via changes α‐and β‐diversity, carbon ratio (C:N) microbes typical steppe. The results show that or alone significantly affected treatment order 2.7 > 0 for intensity N5 N20 N0 addition, which resulted significant higher combination 5 . Plant C:N were predominant drivers EMF. Grazing reduced indirectly by decreasing β‐diversity. promoted α‐diversity. In lower α‐diversity enhanced increasing C:N. Our suggest negative effects herbivore stronger larger compared smaller local communities, while could maintain level rather than ones. highlight should be considered fully unravel eutrophication functions. also demonstrate important role microbe maintaining multifunctionality, thus we include (i.e., C transformation) further studies. low supplementation most work provides insight into conservation management, aiming capacity grasslands sustainably supply ecological productive

Language: Английский

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Alteration of microbial carbon and nitrogen metabolism within the soil metagenome with grazing intensity at semiarid steppe

Journal of Environmental Management, Journal Year: 2023, Volume and Issue: 347, P. 119078 - 119078

Published: Sept. 25, 2023

Language: Английский

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