Variation of soil infiltrability across a 79-year chronosequence of naturally restored grassland on the Loess Plateau, China

Zhao, Yu-Guo; Wu, Pute; Zhao, Shiwei; Feng, Hao

doi:10.1016/j.jhydrol.2013.09.039

Cited by 74 publications

(46 citation statements)

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“…3). Results are consistent with previous studies that soil infiltration capacity was enhanced after vegetation restoration (Chartier et al, 2011;Yüksek and Yüksek, 2011;Zhao et al, 2013). The enhancement of soil infiltration capacity is mainly associated with vegetation growth and improvement in soil properties (Li et al, 2011;Neris et al, 2012).…”

Section: Changes In Soil Hydraulic Conductivity Under Different Vegetsupporting

confidence: 92%

“…Soil infiltration is a critical process of the hydrological cycle in terrestrial ecosystems and it is the crucial link between the precipitation and soil water storage (Ludwig et al, 2005;Zhao et al, 2013). As a fundamental hydrological process, soil hydraulic conductivity has a direct effect on the water budget of an ecosystem, the amount of surface runoff and the associated risk of substantial erosion (Michaelides et al, 2009;Chartier et al, 2011).…”

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confidence: 99%

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Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

et al. 2016

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Abstract:The Loess Plateau of China has experienced extensive vegetation restoration in the past several decades, which leads to great changes in soil properties such as soil bulk, porosity, and organic matter with the vegetation restoration age. And these soil properties have great effect on the soil infiltration and soil hydraulic conductivity. However, the potential changes in soil hydraulic conductivity caused by vegetation restoration age have not been well understood. This study was conducted to investigate the changes in soil hydraulic conductivity under five grasslands with different vegetation restoration ages (3, 10, 18, 28 and 37 years) compared to a slope farmland, and further to identify the factors responsible for these changes on the Loess Plateau of China. At each site, accumulative infiltration amount and soil hydraulic conductivity were determined using a disc permeameter with a water supply pressure of -20 mm. Soil properties were measured for analyzing their potential factors influencing soil hydraulic conductivity. The results showed that the soil bulk had no significant changes over the initial 20 years of restoration (P>0.05); the total porosity, capillary porosity and field capacity decreased significantly in the grass land with 28 and 37 restoration ages compared to the slope farmland; accumulative infiltration amount and soil hydraulic conductivity were significantly enhanced after 18 years of vegetation restoration. However, accumulative infiltration amount and soil hydraulic conductivity fluctuated over the initial 10 years of restoration. The increase in soil hydraulic conductivity with vegetation restoration was closely related to the changes in soil texture and structure. Soil sand and clay contents were the most influential factors on soil hydraulic conductivity, followed by bulk density, soil porosity, root density and crust thickness. The Pearson correlation coefficients indicated that the soil hydraulic conductivity was affected by multiply factors. These results are helpful to understand the changes in hydrological and erosion processes response to vegetation succession on the Loess Plateau.

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Section: Changes In Soil Hydraulic Conductivity Under Different Vegetsupporting

confidence: 92%

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confidence: 99%

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

et al. 2016

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“…The OMC of gully heads is lower than those (0.81–3.19%) of the restored hillslopes reported by Zhao et al . () and Li et al . (), which is mainly due to the fact that hillslopes have longer vegetation restoration periods (6–79 years) and caused more organic matter accumulation.…”

Section: Resultsmentioning

confidence: 88%

Impacts of different vegetation restoration options on gully head soil resistance and soil erosion in loess tablelands

Guo

Wang

et al. 2020

Earth Surf Processes Landf

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Vegetation restoration is identified as an effective approach to control soil erosion and affects soil detachment and resistance to concentrated flow on the Loess Plateau. However, the effects of vegetation restoration at gully heads in loess‐tableland remains unclear. This study was performed to investigate the effects of nine vegetation restoration types at gully heads on soil detachment rate (Dr) and soil resistance to concentrated flow (i.e. soil erodibility, Kr and critical shear stress, τc). Undisturbed soil samples were collected from nine vegetation‐restored lands and one slope cropland (as the control) and were subjected to a hydraulic flume to obtain Dr values of gully heads under six inflow discharges (0.5–3.5 L s‐1). The results showed that the Dr values of nine revegetated gully heads were 77.11% to 95.81% less than that of slope cropland, and the grassland dominated by Cleistogenes caespitosa and the shrubland dominated by Hippophae rhamnoides had a relatively greater decrease in Dr than those of other seven restoration types. The Dr value of nine revegetated gully heads could be better simulated by stream power than by flow velocity and shear stress and was also significantly affected by soil disintegration rate (positively), soil bulk density, saturated hydraulic conductivity, organic matter content, and water‐stable aggregate stability (negatively). Additionally, roots with diameters of 0 to 0.5 mm showed a greater effect on Dr than those with larger diameters. Compared to cropland, the nine restored types reduced Kr by 76.26% to 94.26% and improved τc by 1.51 to 4.68 times. The decrease in Kr and the increase in τc were significantly affected by organic matter content, water‐stable aggregate, mean weight diameter of aggregate and root mass density. The combination of grass species (Cleistogenes caespitosa) and shrub (Hippophae rhamnoides) could be considered the best vegetation restoration types for improving soil resistance of gully heads to concentrated flow. © 2019 John Wiley & Sons, Ltd.

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“…Revegetation improved soil characteristics by reducing BD and increasing TP, CP and SOMs (Jiao et al ., ), attributing to the accumulation of fresh plant residues in surface soil as well as decomposed root residues in subsurface soil (Zhao et al ., ). Soil characteristics were closely associated with soil infiltrability (Cerdà, ).…”

Section: Discussionmentioning

confidence: 99%

Legume Grasslands Promote Precipitation Infiltration better than Gramineous Grasslands in arid Regions

Huang

Tian

et al. 2016

Land Degrad Dev

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Precipitation infiltration is the most important process for soil water supply of vegetation in the arid regions. Higher infiltration rate is advantageous for vegetation growth and maintenance in the arid areas. Four grassland types (Medicago sativa, Agropyron cristatum, Caragana korshinskii and Stipa capillata) were selected in this study. Results showed that the infiltration capacity in the legume grasslands was about 30% higher than in the gramineous grasslands and the difference was significant (p < 0·05). Furthermore, the infiltration rate in legume shrub‐grassland was 16% less than the legume grasslands, but the difference was not significant (p > 0·05). The below‐ground biomass, total porosity, capillary porosity, soil organic matters and soil aggregate were the main factors to determine the soil infiltration rates. The capillary porosity and soil aggregate of the top soil presented significant negative effects on soil infiltration rate (p < 0·05). The below‐ground biomass in 10–30 cm soil layer was the most important factor, which significantly and positively correlates with the soil infiltration rate (p < 0·01). It is possible to conclude that the legume grasslands presented the higher soil infiltration rate and promoted precipitation infiltration in the studied area. And the legume grasslands might be a more suitable option for vegetation restoration from the perspective of soil infiltration and water supply in the arid regions. Copyright © 2016 John Wiley & Sons, Ltd.

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Variation of soil infiltrability across a 79-year chronosequence of naturally restored grassland on the Loess Plateau, China

Cited by 74 publications

References 47 publications

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

Soil hydraulic conductivity as affected by vegetation restoration age on the Loess Plateau, China

Impacts of different vegetation restoration options on gully head soil resistance and soil erosion in loess tablelands

Legume Grasslands Promote Precipitation Infiltration better than Gramineous Grasslands in arid Regions

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