Physiological adaptability of three gramineae plants under various vegetation restoration models in mining area of Qinghai-Tibet Plateau

Large-scale coal mining activities on the QTP have affected the natural grassland ecosystem which will take decades to recover. Therefore, looking for an effective vegetation restoration method is the most effective way to restore the ecosystem. In this study, we explored the effects of three vegeta...

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Bibliographic Details
Published in:Journal of plant physiology 2022-09, Vol.276, p.153760-153760, Article 153760
Main Authors: Sun, Yi, Yao, Xixi, Li, ChangHui, Xie, YongLi
Format: Article
Language:English
Subjects:
China
chlorophyll
coal
Cold resistance
ecological restoration
ecosystems
Elymus nutans
Festuca sinensis
grasslands
Habitat conditions
habitats
Mining area
organic fertilizers
Physiological indices
plant physiology
Poa
Restoration plants
soil
sugars
Vegetation reconstruction models
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Summary:Large-scale coal mining activities on the QTP have affected the natural grassland ecosystem which will take decades to recover. Therefore, looking for an effective vegetation restoration method is the most effective way to restore the ecosystem. In this study, we explored the effects of three vegetation restoration modes (coal mine spoils planting (CK), organic fertilizer planting (OF), and cover soil planting (CS)) on the five cold-resistance related physiological indices of three native Gramineae plants (Elymus nutans, Poa crymophila and Festuca sinensis) growing in three different habitats (shady slope, sunny slope, and flat slope). The higher contents of soluble sugar (SS) in the Elymus nutans (213.46 mg/g) and Festuca sinensis (202.84 mg/g) were recorded under the CS treatment in the sunny slope habitat. The FP contents of Elymus nutans (421.31 μg/g), Poa crymophila (310.06 μg/g), and Festuca sinens (288.45 μg/g) were higher under the CK treatment in the flat ground habitat. The higher (P  Festuca sinensis > Poa crymophila. While the effectiveness order of the three vegetation restoration models in alpine mining areas from good to bad was CS > OF > CK. This study will provide a theoretical and guiding significance to evaluate the effectiveness of different restoration methods, formulate optimal restoration strategies and guide the sustainable restoration of the damaged ecosystems of the alpine mining areas.
ISSN:0176-1617
1618-1328
DOI:10.1016/j.jplph.2022.153760