Precipitation-mediated responses of plant biomass production and allocation to changing soil pH in semiarid grasslands

Li, Kai; Liu, Zunchi; Li, Xiang; Shi, Xusheng; Lock, T. Ryan; Kallenbach, Robert L.; Yuan, ZY

doi:10.1016/j.agee.2022.108123

Cited by 13 publications

(4 citation statements)

References 65 publications

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“…Different plants exhibit different preferences for soil, making soil pH a crucial factor that directly influences plant growth [34]. Soil pH is not only an indicator of soil acidity and alkalinity but is also closely related to the effectiveness of nutrients needed for plant growth [35].…”

Section: Discussionmentioning

confidence: 99%

Rice Husks and Leaf Mold Used as Peat Substitutes to Improve the Morphological, Photosynthetic, and Biochemical Properties of Chrysanthemum (Chrysanthemum × morifolium)

Liu,

Chen

et al. 2023

Sustainability

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Chrysanthemums (Chrysanthemum × morifolium) are highly valued for their ornamental and economic benefits. However, the commonly used growing medium for chrysanthemums, peat, is not renewable, and peatlands are facing depletion. Therefore, it is important to find sustainable alternatives to peat. This study aims to evaluate the potential of rice husks and leaf mold mixed with peat and perlite in different ratios (10–20–30–40–80% v/v/v/v) as substitute materials for peat in chrysanthemum production. The study examines the physical and chemical properties of the different growing media ratios, as well as their effects on plant growth, development, and physiological indicators. The results of the experiment demonstrate that the different ratios of the cultivation substrate significantly influence the physical and chemical properties of the growing medium, as well as the growth and physiological indicators of chrysanthemums. A 20–30% proportion of rice husks and leaf mold promotes the growth and photosynthetic activity of chrysanthemum cuttings, resulting in increased plant height, leaf area, total chlorophyll content, and net photosynthetic rate. The mixed substrates (10–40%) maintain suitable pH levels, electrical conductivity (EC), and nutrient content (nitrogen, phosphorus, and potassium). However, an 80% ratio of rice husks negatively affects plant survival and growth due to elevated EC and potassium levels. In conclusion, a peat medium containing 20% rice husks and leaf mold provides a more favorable cultivation substrate for producing high-quality chrysanthemums while promoting sustainable horticultural practices.

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Section: Discussionmentioning

confidence: 99%

Rice Husks and Leaf Mold Used as Peat Substitutes to Improve the Morphological, Photosynthetic, and Biochemical Properties of Chrysanthemum (Chrysanthemum × morifolium)

Liu,

Chen

et al. 2023

Sustainability

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“…To determine whether climate and soil nutrient factors had a direct or indirect impact on BGBP through community characteristics, we created two structural equation models (SEMs) [ 66 ]. These SEMs were built using the R package “piecewiseSEM”.…”

Section: Methodsmentioning

confidence: 99%

Climate Factors Influence Above- and Belowground Biomass Allocations in Alpine Meadows and Desert Steppes through Alterations in Soil Nutrient Availability

Wang,

Zhang,

Wang

et al. 2024

Plants

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Biomass is a direct reflection of community productivity, and the allocation of aboveground and belowground biomass is a survival strategy formed by the long-term adaptation of plants to environmental changes. However, under global changes, the patterns of aboveground–belowground biomass allocations and their controlling factors in different types of grasslands are still unclear. Based on the biomass data of 182 grasslands, including 17 alpine meadows (AMs) and 21 desert steppes (DSs), this study investigates the spatial distribution of the belowground biomass allocation proportion (BGBP) in different types of grasslands and their main controlling factors. The research results show that the BGBP of AMs is significantly higher than that of DSs (p < 0.05). The BGBP of AMs significantly decreases with increasing mean annual temperature (MAT) and mean annual precipitation (MAP) (p < 0.05), while it significantly increases with increasing soil nitrogen content (N), soil phosphorus content (P), and soil pH (p < 0.05). The BGBP of DSs significantly decreases with increasing MAP (p < 0.05), while it significantly increases with increasing soil phosphorus content (P) and soil pH (p < 0.05). The random forest model indicates that soil pH is the most important factor affecting the BGBP of both AMs and DSs. Climate-related factors were identified as key drivers shaping the spatial distribution patterns of BGBP by exerting an influence on soil nutrient availability. Climate and soil factors exert influences not only on grassland biomass allocation directly, but also indirectly by impacting the availability of soil nutrients.

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“…which play important roles for plant growth. On the contrary, soil pH typically exhibits an opposite response to water availability [92] regulated by calcite (CaCO 3 ) and gibbsite (Al(OH) 3 ) equilibrium [93].…”

Section: Linear Responses Of Soil Properties Along Moisture Gradientsmentioning

confidence: 99%

Linear responses of soil microbiomes, metagenomic and metabolomic functioning across ecosystems along water gradients in the Altai region, northwestern China

Fu,

Qiu,

Zhao

et al. 2023

Preprint

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Background To investigate microbial communities and their contributions to carbon and nutrient cycling along water gradients can enhance our comprehension of climate change impacts on ecosystem services. Results We conducted an assessment of microbial communities, metagenomic functions, and metabolomic profiles within four ecosystems, i.e., desert grassland (DG), shrub-steppe (SS), forest (FO) and marsh (MA) in the Altai region of Xinjiang, China. Soil total carbon (TC), total nitrogen, NH4+, and NO3- increased linearly, but pH decreased with soil water gradients. Microbial abundances and richness also increased with soil moisture except the abundances of fungi and protists being lowest in MA. Within prokaryotes, the relative abundances of Proteobacteria and Acidobacteria increased, whereas those of Actinobacteria and Thaumarchaeota decreased along water gradients. In fungi and protists, Basidiomycota and Mortierellomycota, Evosea and Endomyxa became dominant in FO and MA, respectively, but the relative abundance of Cercozoa decreased along soil moisture gradients. The β-diversity of microbiomes, metagenomic and metabolomic functioning were linearly distributed along soil moisture gradients, significantly associated with soil factors of TC, NH4+, and pH. For soil metagenomic functions, the metabolic genes related to Carbohydrate (CO2 fixation, Di- and oligosaccharides, Fermentation, and One-carbon metabolism), Iron (Iron acquisition in Vibrio and Campylobacter iron metabolism) decreased with soil moisture, while genes related to the metabolisms of Nitrogen (Ammonia assimilation, Denitrification, Nitrogen fixation, and Nitrosative stress) and Potassium (Potassium homeostasis) increased linearly along water gradients. Additionally, MA harbored the most abundant metabolomics dominated by lipids and lipid-like molecules (Erucic acid, Hypogeic acid, and Kojibiose, etc.), and organic oxygen compounds (Maltotetraose, Quinone, Sucrose, and Trehalose, etc.), except certain metabolites showing decline trends along water gradients, such as N'-Hydroxymethylnorcotinine and 5-Hydroxyenterolactone. Conclusions Our study suggests that future ecosystem succession facilitated by changes in rainfall patterns will significantly alter soil microbial taxa, functional potential and metabolite fractions.

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Precipitation-mediated responses of plant biomass production and allocation to changing soil pH in semiarid grasslands

Cited by 13 publications

References 65 publications

Rice Husks and Leaf Mold Used as Peat Substitutes to Improve the Morphological, Photosynthetic, and Biochemical Properties of Chrysanthemum (Chrysanthemum × morifolium)

Rice Husks and Leaf Mold Used as Peat Substitutes to Improve the Morphological, Photosynthetic, and Biochemical Properties of Chrysanthemum (Chrysanthemum × morifolium)

Climate Factors Influence Above- and Belowground Biomass Allocations in Alpine Meadows and Desert Steppes through Alterations in Soil Nutrient Availability

Linear responses of soil microbiomes, metagenomic and metabolomic functioning across ecosystems along water gradients in the Altai region, northwestern China

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