Spatial Variability of Soil Physical Properties in a Region of the Loess Plateau of Pr China Subject to Wind and Water Erosion

Wang, Y. Q.; Shao, Mingan

doi:10.1002/ldr.1128

Cited by 150 publications

(95 citation statements)

References 45 publications

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“…The topographic factor has been traditionally included in the study of the spatial distribution of soil properties (Fernández-Calviño et al, 2013;Haregeweyn et al, 2013;Ozgoz et al, 2013;Wang and Shao, 2013). Over time, many researchers have quantified the relationships between topographic parameters and soil properties such as soil OM and physical properties such as particle size distribution, bulk density and depth to specific horizon boundaries (McKenzie and Austin, 1993;Gessler et al, 1995Gessler et al, , 2000Pachepsky et al, 2001;Ziadat, 2005).…”

Section: Introductionmentioning

confidence: 99%

Soil organic carbon along an altitudinal gradient in the Despeñaperros Natural Park, southern Spain

2015

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Abstract. Soil organic carbon (SOC) is extremely important in the global carbon (C) cycle as C sequestration in non-disturbed soil ecosystems can be a C sink and mitigate greenhouse-gas-driven climate change. Soil organic carbon changes in space and time are relevant to understand the soil system and its role in the C cycle. This is why the influence of topographic position on SOC should be studied. Seven topographic positions from a toposequence between 607 and 1168 m were analyzed in the Despeñaperros Natural Park (Jaén, SW Spain). Depending on soil depth, one to three control sections (0-25, 25-50 and 75 cm) were sampled at each site. The SOC content in studied soils was below 30 g kg −1 and strongly decreases with depth. These results were related to the gravel content and to the bulk density. The SOC content from the topsoil (0-25 cm) varied largely through the altitudinal gradient ranging between 27.3 and 39.9 g kg −1 . The SOC stock (SOCS) varied between 53.8 and 158.0 Mg ha −1 in the studied area, which had been clearly conditioned by the topographic position. Therefore, results suggest that elevation should be included in SOCS models and estimations at local and regional scales.

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Section: Introductionmentioning

confidence: 99%

Soil organic carbon along an altitudinal gradient in the Despeñaperros Natural Park, southern Spain

2015

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“…The relationship between different land use and soil susceptibility to erosion has attracted the interest of a variety of researchers (Yang et al, 2003;Cerdà and Doerr, 2007;Blavet et al, 2009;Biro et al, 2013;Wang and Shao, 2013), who have shown the impact of changes in vegetation cover and agricultural practices on soil properties and therefore on overland flow. Generally, cultivated lands experience the highest erosion yield (Cerdà et al, 2009;Mandal and Sharda, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Moreover the spatial variability of soil properties, which influence soil susceptibility to erosion, is highly related to anthropogenic factors particularly in cultivated lands (Paz-González et al, 2000;Wang and Shao, 2013). Thus, information on the spatial variability and the interactions between soil properties is essential for understanding the ecosystem processes and planning sustainable soil management alternatives for specific land uses (Pérez-Rodríguez et al 2007;Ziadat and Tamimeh, 2013).…”

Section: Introductionmentioning

confidence: 99%

Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed

et al. 2015

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Abstract. The aim of this work is to investigate how the spatial variability of soil properties and soil erodibility (K factor) were affected by the changes in land use allowed by irrigation with water from a reservoir in a semiarid area. To this end, three areas representative of different land uses (agroforestry grassland, lucerne crop and olive orchard) were studied within a 900 ha farm. The interrelationships between variables were analyzed by multivariate techniques and extrapolated using geostatistics. The results confirmed differences between land uses for all properties analyzed, which was explained mainly by the existence of diverse management practices (tillage, fertilization and irrigation), vegetation cover and local soil characteristics. Soil organic matter, clay and nitrogen content decreased significantly, while the K factor increased with intensive cultivation. The HJ-Biplot methodology was used to represent the variation of soil erodibility properties grouped in land uses. Native grassland was the least correlated with the other land uses. The K factor demonstrated high correlation mainly with very fine sand and silt. The maps produced with geostatistics were crucial to understand the current spatial variability in the Alqueva region. Facing the intensification of land-use conversion, a sustainable management is needed to introduce protective measures to control soil erosion.

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“…It causes on-site loss of topsoil and poses threats to land productivity (Lieskovský and Kenderessy, 2014;Ziadat and Taimeh, 2013). This is especially true on the Loess Plateau of China, where erosion-prone area reached up to 472,000 km 2 and the area with soil erosion modulus higher than 8,000 tonnes km −2 yr −1 was approximate 91,200 km 2 in recent years (Wang and Shao, 2013;Zhao et al, 2013b). The intense soil erosion and frequent anthropogenic activities have caused the extreme degradation of both zonal vegetation and soil quality in this region.…”

Section: Introductionmentioning

confidence: 99%

Effects of patterned Artemisia capillaris on overland flow resistance under varied rainfall intensities in the Loess Plateau of China

Zhang

Liu

et al. 2014

Journal of Hydrology and Hydromechanics

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Abstract:In this paper simulated rainfall experiments in laboratory were conducted to quantify the effects of patchy distributed Artemisia capillaris on spatial and temporal variations of the Darcy-Weisbach friction coefficient (f). Different intensities of 60, 90, 120, and 150 mm h -1 were applied on a bare plot (CK) and four different patched patterns: a checkerboard pattern (CP), a banded pattern perpendicular to slope direction (BP), a single long strip parallel to slope direction (LP), and a pattern with small patches distributed like the letter 'X' (XP). Each plot underwent two sets of experiments, intact plant and root plots (the above-ground parts were removed). Results showed that mean f for A. capillaris patterned treatments was 1.25-13.0 times of that for CK. BP, CP, and XP performed more effectively than LP in increasing hydraulic roughness. The removal of grass shoots significantly reduced f. A negative relationship was found between mean f for the bare plot and rainfall intensity, whereas for grass patterned plots f r (mean f in patterned plots divided by that for CK) increased exponentially with rainfall intensity. The f -Re relation was best fitted by a power function. Soil erosion rate can be well described using f by a power-law relationship.

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Spatial Variability of Soil Physical Properties in a Region of the Loess Plateau of Pr China Subject to Wind and Water Erosion

Cited by 150 publications

References 45 publications

Soil organic carbon along an altitudinal gradient in the Despeñaperros Natural Park, southern Spain

Soil organic carbon along an altitudinal gradient in the Despeñaperros Natural Park, southern Spain

Spatial variability of soil properties and soil erodibility in the Alqueva reservoir watershed

Effects of patterned Artemisia capillaris on overland flow resistance under varied rainfall intensities in the Loess Plateau of China

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