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Showing papers in "Geoderma in 2017"


Journal ArticleDOI
15 Apr 2017-Geoderma
TL;DR: In this paper, the authors surveyed the soil organic carbon (SOC) stock estimates and sequestration potentials from 20 regions in the world (New Zealand, Chile, South Africa, Australia, Tanzania, Indonesia, Kenya, Nigeria, India, China Taiwan, South Korea, China Mainland, United States of America, France, Canada, Belgium, England & Wales, Ireland, Scotland, and Russia).

1,171 citations


Journal ArticleDOI
15 Feb 2017-Geoderma
TL;DR: In this article, a meta-analysis of 56 studies with 1080 experimental cases from manuscripts published between 2010 and 2015 was conducted to investigate how biochar properties and the interaction among biochar, soil and fertilisation affect SIN.

383 citations


Journal ArticleDOI
01 Nov 2017-Geoderma
TL;DR: In this article, three well-known machine learning models namely maximum entropy (MaxEnt), support vector machine (SVM), and Artificial Neural Network (ANN) were used accompanied by their ensembles in Wanyuan area, China.

269 citations


Journal ArticleDOI
20 Sep 2017-Geoderma
TL;DR: In this article, soil fauna may affect soil organic matter (SOM) dynamics not only by assimilating litter but also by modifying the soil environment at many spatiotemporal scales.

201 citations


Journal ArticleDOI
01 Apr 2017-Geoderma
TL;DR: In this article, the authors compare the most current DSM method, Regression Kriging (RK) with a new approach derived from RandomForest (QRF) in regard to their ability of predicting the uncertainties of GlobalSoilMap soil property grids.

191 citations


Journal ArticleDOI
01 Jun 2017-Geoderma
TL;DR: In this article, an overview of current understanding on the interaction between soil OM and selenium in soil-plant systems is given, highlighting that OM can immobilize Se by both biotic and abiotic mechanisms and reduce its bioavailability but the release of OM-immobilized Se through mineralization should not be overlooked.

177 citations


Journal ArticleDOI
01 Oct 2017-Geoderma
TL;DR: This study investigated the impact of two distinct types of biochar on soil chemical properties, microbial communities, soil aggregation and aggregate-associated C within two California agricultural soils in a laboratory incubation study (60 weeks).

160 citations


Journal ArticleDOI
15 Apr 2017-Geoderma
TL;DR: The results suggest that the below-ground bacterial communities are more sensitive to N inputs, but P inputs can also play an important role in bacterial niche differentiation in pots with higher N or P input.

151 citations


Journal ArticleDOI
15 Apr 2017-Geoderma
TL;DR: In this paper, the authors used principal component analysis (PCA) to identify sensitive soil quality indicators and to develop soil quality indices and establishment of their critical limits in Inceptisols, Entisols and Alfisols collected from farmers' fields with long-term rice-rice cropping system in sub-tropical India.

147 citations


Journal ArticleDOI
15 Oct 2017-Geoderma
TL;DR: In this article, 13C-labelled wheat residues (leaves, stalks, roots) were added to a silt-loam soil at levels of 1.40 and 5.04 kg−1 and CO2 release and δ13C signature were measured over 64 days at 20°C.

139 citations


Journal ArticleDOI
Fei Zang1, Shengli Wang1, Zhongren Nan1, Jianmin Ma1, Qian Zhang1, Yazhou Chen1, Yepu Li1 
01 Nov 2017-Geoderma
TL;DR: Wang et al. as discussed by the authors investigated the heavy metal concentrations in soil-corn system, 30 pairs of soil and corn grain samples were collected from Baiyin City, China, a typical industrial oasis in Loess Plateau.

Journal ArticleDOI
01 Nov 2017-Geoderma
TL;DR: In this article, the vertical distribution of soil organic carbon (SOC), soil total nitrogen (STN), bulk density (BD), and mapped their spatial distribution at five standard soil depth intervals (0-5, 5-15, 15-30, 30-60 and 60-100).

Journal ArticleDOI
15 Sep 2017-Geoderma
TL;DR: In this article, a large area in which 161 free-to-swell undisturbed samples were obtained for this research represents a major part of the Swiss agricultural land and belongs to one broad soil group (Cambi-Luvisols).

Journal ArticleDOI
15 Jun 2017-Geoderma
TL;DR: Wang et al. as discussed by the authors studied the soil organic carbon (SOC) concentration and its correlations with environmental factors in the Wangmaogou Watershed of Wuding River, China.

Journal ArticleDOI
01 Feb 2017-Geoderma
TL;DR: In this article, X-ray tomography was used to measure soil pore space architecture at an image resolution of 65μm for 64 samples taken in two consecutive years in the harrowed and ploughed layers of a silt loam soil a few weeks after spring cultivation.

Journal ArticleDOI
15 Jun 2017-Geoderma
TL;DR: In this article, a precision analysis of the patterns of soil erosion and the soil surface components at the intra-plot scale was performed after monitoring soil erosion processes during 25 natural rainfall events.

Journal ArticleDOI
01 Feb 2017-Geoderma
TL;DR: In this article, the role of pore characteristics in soil carbon decomposition and protection at 5-1000μm spatial scale is discussed, with emphasis on direct and indirect effects on soil microorganisms and subsequent microbial effects on decomposition.

Journal ArticleDOI
01 Dec 2017-Geoderma
TL;DR: In this article, the authors investigated the influence of six fresh and six aged biochars on the ability of soils to hold sufficient plant available water (PAW) between rainfall events.

Journal ArticleDOI
15 Nov 2017-Geoderma
TL;DR: In this paper, the authors found that short-range-order (SRO) minerals are of particular interest due to their high reactive surface areas and capacity for soil C stabilization through sorption or co-precipitation.

Journal ArticleDOI
01 Jun 2017-Geoderma
TL;DR: In this paper, the P fractions and its sorption indices in the plow layer of a typical subtropical paddy soil under different fertilization regimes were determined and a sequential fractionation scheme identified that NaOH-extractable inorganic inorganic P (NaOH-Pi) was the primary P form in the P soil followed by residual P (Pres).

Journal ArticleDOI
01 Aug 2017-Geoderma
TL;DR: In this article, the authors evaluated the extent to which digital elevation models (DEM) derivatives and machine learning algorithms (k-nearest neighbor, support vector machine, decision tree (DT) and random forest) can be used for predicting the location and extent of salt-affected areas within the Vaalharts and Breede River irrigation schemes of South Africa.

Journal ArticleDOI
01 Jan 2017-Geoderma
TL;DR: In this paper, a multiple-trees classification technique, namely Random Forest (RF), was applied to extend predictions from 1:25,000 legacy soil surveys (including WRB soil groups, soil depth and soil texture classes) to the larger area of Cyprus.

Journal ArticleDOI
01 Aug 2017-Geoderma
TL;DR: In this article, the authors examined the management and landscape effects on water stable soil aggregates, soil aggregate-associated carbon, nitrogen content and soil carbon, and nitrogen accumulation in Xishuangbanna, southwestern China.

Journal ArticleDOI
01 Jan 2017-Geoderma
TL;DR: In this paper, the authors conducted a long-term N and P addition experiment in an N-rich tropical forest, consisting of four treatments: control, N-addition, P-additions, and NP-addiction, respectively, and found that continuous N addition promoted acidification and made the buffering effects by P addition invisible in our soils at the Albuffering stage.

Journal ArticleDOI
01 Jan 2017-Geoderma
TL;DR: It is found that urea hydrolysis rate was significantly correlated with gene copies of bacterial 16S, ureC, and increased pH, which suggests that liming acid soils increases urea Hydrolysis rates in part by encouraging the growth of microorganisms capable of producing urease.

Journal ArticleDOI
15 Aug 2017-Geoderma
TL;DR: In this paper, the role of tree roots in weathering bedrock was investigated in the Susquehanna Shale Hills Critical Zone Observatory (SSHCZO) in central Pennsylvania, where a variety of biological, physical, and chemical properties including root density, distribution, and respiration, soil gas, and elemental compositions, mineralogy, and morphology of soil, rock, and rock fracture fill were measured at ridge top, mid-slope, toe slope, and valley floor sites.

Journal ArticleDOI
01 Mar 2017-Geoderma
TL;DR: In this paper, the chemical and physical properties of peat change during land conversion to oil palm plantations were quantified by comparing four separate stages of conversion; namely, secondary peat swamp forests, recently deeply drained secondary forests, cleared and recently planted oil palm, and mature oil palm plantation in North Selangor, Malaysia.

Journal ArticleDOI
01 Jan 2017-Geoderma
TL;DR: In this paper, the influence of soil parent material on basic soil parameters (texture, pH, CaCO3 concentration) and SOM stocks to 30 cm depth (organic C and total N) was determined on the 50 soil samples.

Journal ArticleDOI
15 May 2017-Geoderma
TL;DR: In this paper, the structure and interface between the carbon and mineral phases of biochar were characterized using high-resolution scanning electron microscopy (SEM), atomic resolution transmission electron microscope (TEM) and scanning TEM (STEM), energy electron loss spectroscopy (EELS), and energy dispersive X-ray spectrographic (EDS) at resolutions of 1-20 nm.

Journal ArticleDOI
15 Nov 2017-Geoderma
TL;DR: In this paper, portable X-ray fluorescence (PXRF) spectrometry was combined with non-parametric indicator kriging for rapid soil pollution hotspot mapping in Eastern Europe.