Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands?

Burgess-Conforti, Jason R.; Moore, P.; Owens, Phillip R.; Miller, David M.; Ashworth, Amanda J.; Hays, Phillip D.; Evans‐White, Michelle A.; Anderson, Kelsey R.

doi:10.1007/s11356-019-04883-y

Cited by 17 publications

(11 citation statements)

References 21 publications

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“…A higher temperature together with a humid climate could enhance chemical weathering and leaching, which caused the lowest soil pH in the lowest elevation site (1,571-1,721 m a.s.l.). The coniferous forest in the higher elevation also showed a decreased soil pH due to acidic chemical components (Burgess-Conforti et al, 2019). Thus, soil pH in the medium elevation was close to neutral and consequentially led to the highest bacterial diversity.…”

Section: Effects Of Ph In Shaping Bacterial Diversity and Compositionmentioning

confidence: 93%

Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient

et al. 2021

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Elevational gradients strongly affect the spatial distribution and structure of soil bacterial communities. However, our understanding of the effects and determining factors is still limited, especially in the deep soil layer. Here, we investigated the diversity and composition of soil bacterial communities in different soil layers along a 1,500-m elevational gradient in the Taibai Mountain. The variables associated with climate conditions, plant communities, and soil properties were analyzed to assess their contributions to the variations in bacterial communities. Soil bacterial richness and α-diversity showed a hump-shaped trend with elevation in both surface and deep layers. In the surface layer, pH was the main factor driving the elevational pattern in bacterial diversity, while in the deep layer, pH and soil carbon (C) availability were the two main predictors. Bacterial community composition differed significantly along the elevational gradient in all soil layers. In the surface layer, Acidobacteria, Delta-proteobacteria, and Planctomycetes were significantly more abundant in the lower elevation sites than in the higher elevation sites; and Gemmatimonadetes, Chloroflexi, and Beta-proteobacteria were more abundant in the higher elevation sites. In the deep layer, AD3 was most abundant in the highest elevation site. The elevational pattern of community composition co-varied with mean annual temperature, mean annual precipitation, diversity and basal area of trees, pH, soil C availability, and soil C fractions. Statistical results showed that pH was the main driver of the elevational pattern of the bacterial community composition in the surface soil layer, while soil C fractions contributed more to the variance of the bacterial composition in the deep soil layer. These results indicated that changes in soil bacterial communities along the elevational gradient were driven by soil properties in both surface and deep soil layers, which are critical for predicting ecosystem functions under future climate change scenarios.

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Section: Effects Of Ph In Shaping Bacterial Diversity and Compositionmentioning

confidence: 93%

Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient

et al. 2021

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“…This could be mainly because the slow-decaying larch litter released fewer base cations to soil solution, which could reduce soil buffering capacity (Berthrong et al, 2009). In addition, the slow-decaying larch litters also lead to thick forest floors, which produced organic acids to acidify the soil (Burgess-Conforti et al, 2019;Hong et al, 2018;Lucas et al, 2011;Savill, 2019 As expected, mature stands suffered more serious water shortages, soil acidification, and soil salinization than young stands (Figure 2a). Our data indicated that soil total Na concentration was negatively correlated with soil moisture but was not affected by soil pH (Figure 5).…”

Section: Discussionmentioning

confidence: 80%

Drought and Salinization Stress Induced by Stand Development Alters Mineral Element Cycling in a Larch Plantation

et al. 2021

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“…In contrast, it has been suggested that differences may be more subtle, or that changes in forest composition may influence soil chemistry at a slower rate than expected. In Arkansas, changes in soil chemistry were investigated following a large increase in conifers over a 50-year period [54]. Despite greater nutrient concentrations in deciduous (Quercus spp., Acer spp., and Ulmus spp.)…”

Section: Soil Chemistrymentioning

confidence: 99%

Contrasting Litter Nutrient and Metal Inputs and Soil Chemistry among Five Common Eastern North American Tree Species

Ott

Watmough

2021

Forests

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Forest composition has been altered throughout Eastern North America, and changes in species dominance may alter nutrient cycling patterns, influencing nutrient availability and distribution in soils. To assess whether nutrients and metals in litterfall and soil differed among sites influenced by five common Ontario tree species (balsam fir (Abies balsamea (L.) Mill.), eastern hemlock (Tsuga canadensis (L.) Carr.), white pine (Pinus strobus L.), sugar maple (Acer saccharum Marsh.), and yellow birch (Betula alleghaniensis Britt.)), litterfall and soil chemistry were measured at a managed forest in Central Ontario, Canada. Carbon (C) and macronutrient (nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), and magnesium (Mg)) inputs in litterfall varied significantly among sites, primarily due to differences in litterfall mass, which was greatest in deciduous-dominated sites, while differences in elemental concentrations played relatively minor roles. Trace metal inputs in litterfall also varied, with much higher zinc (Zn) and cadmium (Cd) in litterfall within yellow birch dominated stands. Mineral soil oxide composition was very similar among sites, suggesting that differences in soil chemistry were influenced by forest composition rather than parent material. Litter in deciduous-dominated stands had lower C/N, and soils were less acidic than conifer-dominated sites. Deciduous stands also had much shorter elemental residence times in the organic horizons, especially for base cations (Ca, Mg, K) compared with conifer-dominated sites, although total soil nutrient pools were relatively consistent among sites. A change from stands with greater conifer abundance to mixed hardwoods has likely led to more rapid cycling of elements in forests, particularly for base cations. These differences are apparent at small scales (100 m2) in mixed forests that characterize many forested regions in Eastern North America and elsewhere.

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Are soils beneath coniferous tree stands more acidic than soils beneath deciduous tree stands?

Cited by 17 publications

References 21 publications

Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient

Soil pH and Organic Carbon Properties Drive Soil Bacterial Communities in Surface and Deep Layers Along an Elevational Gradient

Drought and Salinization Stress Induced by Stand Development Alters Mineral Element Cycling in a Larch Plantation

Contrasting Litter Nutrient and Metal Inputs and Soil Chemistry among Five Common Eastern North American Tree Species

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