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Article
Intraspecific variations in activities of four classes of fine root phosphatases in Quercus serrata, a dominant deciduous oak, occurring across a wide soil phosphorus gradient in Japan
Phosphatase secretion by roots is an important phosphorus (P) acquisition strategy for plants growing under soil P deficiency. Four different classes of phosphatases degrade specific fractions of soil organic ...
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Article
Soil acidity accelerates soil organic matter decomposition in Cryptomeria japonica stands and Chamaecyparis obtusa stands
Research has focused on behavior of particulate organic matter (POM) and mineral-associated organic matter (MAOM) in acidic soils, but little attention has been given to the effects of tree species and vertica...
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Article
Correction to: Silicon cycled by tropical forest trees: effects of species, elevation and parent material on Mount Kinabalu, Malaysia
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Article
An increase of fine-root biomass in nutrient-poor soils increases soil organic matter but not soil cation exchange capacity
Fine roots are an important source of soil organic matter (SOM); however, it is unclear whether the cation exchange capacity (CEC) of leaf-derived and root-derived organic matter is comparable. We previously f...
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Article
Divergent roles of iron and aluminum in sediment organic matter association at the terrestrial–aquatic interface
Organic matter (OM) can be protected from abiotic and biotic breakdown via its association with iron (Fe) and aluminum (Al) in both terrestrial and aquatic ecosystems. We hypothesized that the natural variatio...
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Article
Open AccessSoil carbon-food synergy: sizable contributions of small-scale farmers
Benefits to agricultural yield improvement, soil degradation prevention, and climate mitigation are central to the synergies of soil organic carbon (SOC) build-up. However, the contributions of small-scale far...
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Article
Ecosystem Dynamics After Abandonment of Rice Paddy Fields: Does Alien Plant Invasion Enhance Carbon Storage?
Ecosystem property and function can be considerably altered by changes in agricultural land use. Despite the expansion of abandoned fields in temperate humid areas worldwide, little is known about how ecosyste...
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Article
Open AccessLeveraging drought risk reduction for sustainable food, soil and climate via soil organic carbon sequestration
Drought is a major risk in global agriculture. Building-up soil organic carbon (SOC) enhances soil fertility and efficient use of rainwater, which can increase drought tolerance in food production. SOC managem...
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Article
Silicon cycled by tropical forest trees: effects of species, elevation and parent material on Mount Kinabalu, Malaysia
We aimed to compare uptake and litter flux of silicon (Si) across tropical tree species and sites on Mt. Kinabalu, Borneo.
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Article
Open AccessSignificant contribution of subseafloor microparticles to the global manganese budget
Ferromanganese minerals are widely distributed in subseafloor sediments and on the seafloor in oceanic abyssal plains. Assessing their input, formation and preservation is important for understanding the globa...
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Article
Improving understanding of soil organic matter dynamics by triangulating theories, measurements, and models
Soil organic matter (SOM) turnover increasingly is conceptualized as a tension between accessibility to microorganisms and protection from decomposition via physical and chemical association with minerals in e...
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Article
Beyond clay: towards an improved set of variables for predicting soil organic matter content
Improved quantification of the factors controlling soil organic matter (SOM) stabilization at continental to global scales is needed to inform projections of the largest actively cycling terrestrial carbon poo...
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Article
Open AccessGlobal distribution of clay-size minerals on land surface for biogeochemical and climatological studies
Clay-size minerals play important roles in terrestrial biogeochemistry and atmospheric physics, but their data have been only partially compiled at global scale. We present a global dataset of clay-size minera...
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Article
Soil temperature and moisture-based estimation of rates of soil aggregate formation by the endogeic earthworm Eisenia japonica (Michaelsen, 1892)
Ecological importance of earthworm via aggregate production has been well studied in Europe, but much less is known for Asian species. Assessing the effects of temperature and moisture on the soil aggregate fo...
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Article
Variation in the aboveground stand structure and fine-root biomass of Bornean heath (kerangas) forests in relation to altitude and soil nitrogen availability
Borneo’s tropical heath (kerangas) forest has limited soil nutrient availability, and high variation in aboveground structure and fine-root biomass. This variation depends on altitude and soil ...
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Article
Heterotrophic denitrification constrains the upper limit of dissolved N2O-nitrate concentration ratio in agricultural groundwater
Indirect emission of nitrous oxide (N2O) through groundwater and surface drainage is commonly estimated based on the apparent positive relationship between the concentrations of nitrate ([NO3 −]) ...
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Article
Association of organic matter with iron and aluminum across a range of soils determined via selective dissolution techniques coupled with dissolved nitrogen analysis
Strong correlations of soil total organic carbon (OC) with iron and aluminum phases reported frequently make it important to quantify these organic matter (OM) associations, but selective extractants sometimes...
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Article
Interactive influences of climate and parent material on soil microbial community structure in Bornean tropical forest ecosystems
Climate and parent material strongly control vegetation structure and function, yet their control over the belowground microbial community is poorly understood. We assessed variation in microbial lipid profile...
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Article
Sequential density fractionation across soils of contrasting mineralogy: evidence for both microbial- and mineral-controlled soil organic matter stabilization
Sequential density fractionation separated soil particles into “light” predominantly mineral-free organic matter vs. increasingly “heavy” organo-mineral particles in four soils of widely differing mineralogy. ...
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Article
Vertical distribution and pools of microbial residues in tropical forest soils formed from distinct parent materials
The contribution of soil microbial residues to stable carbon pools may be of particular importance in the tropics where carbon residence times are short and any available carbon is rapidly utilized. In this st...
