Spatial variations in soil organic carbon, nitrogen and phosphorus concentrations related to stand characteristics in subtropical areas

Jiang, Fang; Wu, Xin; Xiang, Wenhua; Fang, Xi; Zeng, Yeling; Ouyang, Shuai; Lei, Pifeng; Deng, Xiaomin; Peng, Changhui

doi:10.1007/s11104-016-3101-0

Cited by 35 publications

(17 citation statements)

References 40 publications

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“…The soil is a well‐drained, red clay‐rich loam classified as an Alliti‐Udic Ferrosol in the Chinese Soil Taxonomy (CST), which corresponds to Acrisol in the World Reference Base for Soil Resources (IUSS Working Group WRB, ). Site details are provided by Jiang et al ().…”

Section: Methodsmentioning

confidence: 99%

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Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

Xiang

Ouyang

et al. 2019

Functional Ecology

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Increased availability of soil phosphorus (P) has recently been recognised as an underlying driving factor for the positive relationship between plant diversity and ecosystem function. The effects of plant diversity on the bioavailable forms of P involved in biologically mediated rhizospheric processes and how the link between plant and soil microbial diversity facilitates soil P bioavailability, however, remain poorly understood. This study quantified four forms of bioavailable P (CaCl2‐P, citric‐P, enzyme‐P and HCl‐P) in mature subtropical forests using a novel biologically based approach, which emulates how rhizospheric processes influence the release and supply of available P. Soil microbial diversity was measured by Illumina high‐throughput sequencing. Our results suggest that tree species richness significantly affects soil microbial diversity (p < 0.05), increases litter decomposition, fine‐root biomass and length and soil organic carbon and thus increases the four forms of bioavailable P. A structural equation model that links plants, soil microbes and P forms indicated that soil bacterial and fungal diversity play dominant roles in mediating the effects of tree species richness on soil P bioavailability. An increase in the biodiversity of plants, soil bacteria and fungi could maintain soil P bioavailability and alleviate soil P limitations. Our results imply that biodiversity strengthens plant and soil feedback and increases P recycling. A plain language summary is available for this article.

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Section: Methodsmentioning

confidence: 99%

“…Due to their small effect on the bioavailable P, understorey species were excluded from further analyses. The tree basal area (m 2 ha ‐1 ) was calculated as the sum of π(DBH/2) 2 of trees (DBH ≥4 cm) (Jiang et al, ). Detailed information on the stand characteristics is available in Ouyang et al () and Table S1.…”

Section: Methodsmentioning

confidence: 99%

Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

Xiang

Ouyang

et al. 2019

Functional Ecology

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“…Based on a semivariogram and a cross-variogram, appropriate models were fitted and the input parameters for the spatial interpolation of kriging and cokriging were provided (Cressie, 1993;Goovaerts, 1997). Three parameters of nugget (C 0 ), sill (C + C 0 ), and range (A) can show the spatial dependence of litter amount (Burgos, Madejón, Pérez-de-Mora, & Cabrera, 2006), and the degree of spatial autocorrelation can be evaluated using structure variance ratio, that is, the value of C 0 /(C 0 + C) (Jiang et al, 2017).…”

Section: Geostatistical Analysismentioning

confidence: 99%

Spatial variability in the amount of forest litter at the local scale in northeastern China: Kriging and cokriging approaches to interpolation

Qin

Wang

Lei

et al. 2019

Ecology and Evolution

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Litter is essential to promote nutrient cycling and maintain the sustainability of forest resources. However, its variability has not been sufficiently studied at the local scale.The prediction of litter amount using ordinary cokriging with Pearson correlation analysis (COK P ) and ordinary cokriging with principal component analysis (COK PCA ) was compared with that using ordinary kriging (OK) based on cross-validation at the local scale of a 1-ha plot over natural spruce-fir mixed forest in Jilin Province, China.Litter samples in semidecomposed (F) and complete decomposed (H) horizons were collected using an equidistant grid point sampling of 10 m × 10 m. Pearson correlation analysis and principal component analysis (PCA) were used to confirm auxiliary variables. The results showed that the amount of litter was 19.65 t/ha in the F horizon and 10.37 t/ha in the H horizon. The spatial structure variance ratio in the H horizon was smaller than that in the F horizon, indicative of its stronger spatial autocorrelation. Spatial distributions of litter amount in both horizons exhibited a patchy and heterogeneous pattern. Of the selected stand characteristics and litter properties, litter moisture content indicated the strongest relationship with litter amount. Cross-validation revealed that COK PCA using the comprehensive score as an auxiliary variable produced the most accurate map. The average standard error and root-mean-square error between the predicted and measured values were always smaller, the mean error and mean standardized error were much closer to 0, and the root-mean-square standardized error was closer to 1 than COK P using litter moisture and OK. Therefore, a clear advantage of cokriging based on principal component analysis was observed and COK PCA was found to be a very useful approach for further interpolation prediction. K E Y W O R D S cokriging, kriging, litter amount, principal component analysis | 779 QIN et al.

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“…The soil chemical variations can be primarily explained by climate (e.g., leaching intensity and duration of droughts, including El Nino) and geology (geological age, silicate clays, Fe oxides, and bedrock P concentration) [18]. However, topography, soil texture, and stand characteristics contributed the most to spatial variations in soil organic C, and total N and P [19]. Spatial patterns of total P strongly resembled woody vegetation cover throughout the soil profile [20], but differed from total N predominately regulated by biotic factors (plant residues and microbial communities) [21], especially in subsurface soils.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen and Phosphorus Concentration in Leaf Litter and Soil in Xishuangbanna Tropical Forests: Does Precipitation Limitation Matter?

Mani

Cao

2019

Forests

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Tropical forests are generally expected to be limited by the availability of nitrogen (N) and phosphorus (P), and these nutrient limitations could be increased by changes in forest biogeochemistry due to limited precipitation. This effect is presumed to be enhanced in the forests predominated by monsoon climate. The present study examined the impacts of monthly precipitation on total N and P in leaf litter and soil of Xishuangbanna tropical forests. Litterfall and top soil were sampled from each of the five 20 × 20 m plots established in the primary (PTF) and secondary tropical forests (STF), at monthly interval for one year. Soils were strongly acidic and showed significant differences between the sites. The monthly amounts of soil and leaf litter nutrients showed great variations between the PTF and STF. Leaf litter N and P were associated with precipitation in both dry and rainy seasons. Soil N and P were not significantly related to precipitation, indicating that changes in vegetation composition and litterfall production together accounted for variation in soil N and P. Our results suggest that the precipitation limitation may affect the leaf litter N and P changes, but did not support the prediction that precipitation limitation can immediately lead to effects on soil N and P in the Xishuangbanna tropical forests.

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Spatial variations in soil organic carbon, nitrogen and phosphorus concentrations related to stand characteristics in subtropical areas

Cited by 35 publications

References 40 publications

Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

Linkage between tree species richness and soil microbial diversity improves phosphorus bioavailability

Spatial variability in the amount of forest litter at the local scale in northeastern China: Kriging and cokriging approaches to interpolation

Nitrogen and Phosphorus Concentration in Leaf Litter and Soil in Xishuangbanna Tropical Forests: Does Precipitation Limitation Matter?

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