Effect of vegetation on the temporal stability of soil moisture in grass-stabilized semi-arid sand dunes

Wang, Zhihui; Wedin, David A.; Franz, Trenton E.; Hiller, Jeremy

doi:10.1016/j.jhydrol.2014.12.037

Cited by 72 publications

(45 citation statements)

References 35 publications

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“…The dynamics of SWC have an important effect on vegetation restoration (Wang, Wedin, Franz, & Hiller, ), whereas the distribution and density of plants also influence the spatial variation of SWC (van Wesemael, Cammeraat, Mulligan, & Burke, ; Zucco, Brocca, Moramarco, & Morbidelli, ). The available SWC and its distribution are affected by the interaction between the environment and plants (Wilcox & Newman, ).…”

Section: Introductionmentioning

confidence: 99%

Soil water content and temporal stability in an arid area with natural and planted grasslands

Huang

Miao

Liu

et al. 2018

Hydrological Processes

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Soil water content (SWC) is a key factor for successful vegetation restoration in arid and semiarid regions, and vegetation has significant influences on the spatial patterns and temporal dynamics of SWC. The aim of this study was to investigate the temporal stability of SWC under different restored grasslands in an arid hilly area of Central China. SWC was measured in the 0‐ to 300‐cm soil profile in the natural grassland (Stipa capillata) and three typical planted grasslands (Medicago sativa, Agropyron cristatum, and Caragana korshinskii) over two growing seasons (from June to October 2015 and 2016) under natural rainfall conditions. The results showed that the mean SWC in the natural grassland was approximately 30% higher than those in the planted grasslands. The SWC consumption of the planted legume grasslands in the deepest soil layers (below 200 cm) was higher than that of the natural grassland, owing to the deep root system of the legumes. Both natural and planted grasslands had low SWC temporal stability in the top soil layers (0–50 cm), whereas more stable conditions were gradually observed with increasing the soil depth. The mean value of the mean relative differences of SWC in natural grassland (ca. 15%) was lower than that in the planted grasslands (A. cristatum grasslands) and much lower than that in the scrubland, highlighting the stronger temporal stability of SWC in the natural grassland. In conclusion, natural grassland could maintain higher and stable SWC and is recommended to be used for achieving sustainable vegetation restoration in arid and semiarid regions.

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Section: Introductionmentioning

confidence: 99%

Soil water content and temporal stability in an arid area with natural and planted grasslands

Huang

Miao

Liu

et al. 2018

Hydrological Processes

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“…Land use types would result in different temporal stability of SWC due to different water uptake patterns by roots (Liu and Shao, 2014). Vegetation tended to reduce temporal stability and increase spatial variability of SWC, and plant phenology influenced the change in the inter-seasonal patterns of temporal stability (Wang et al, 2015b). The soil water condition also had an important effect on the temporal stability of SWC (de Souza et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Spatial-temporal variability of soil water content in a cropland-shelterbelt-desert site in an arid inland river basin of Northwest China

Shen

Gao

et al. 2016

Journal of Hydrology

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a b s t r a c tKnowledge of the spatial-temporal variability of soil water content (SWC) is critical for understanding a range of hydrological processes. In this study, the spatial variance and temporal stability of SWC were investigated in a cropland-shelterbelt-desert site at the oasis-desert ecotone in the middle of the Heihe River Basin, China. The SWC was measured on 65 occasions to a depth of 2.8 m at 45 locations during two growing seasons from 2012 to 2013. The standard deviation of the SWC versus the mean SWC exhibited a convex upward relationship in the shelterbelt with the greatest spatial variation at the SWC of around 22.0%, whereas a linearly increasing relationship was observed for the cropland, desert, and land use pattern. The standard deviation of the relative difference was positively linearly correlated with the SWC (p < 0.05) for the land use pattern, whereas such a relationship was not found in the three land use types. The spatial pattern of the SWC was more time stable for the land use pattern, followed by desert, shelterbelt, and cropland. The spatial pattern of SWC changed dramatically among different soil layers. The locations representing the mean SWC varied with the depth, and no location could represent the whole soil profile due to different soil texture, root distribution and irrigation management. The representative locations of each soil layer could be used to estimate the mean SWC well. The statistics of temporal stability of the SWC could be presented equally well with a low frequency of observation (30-day interval) as with a high frequency (5-day interval). Sampling frequency had little effect on the selection of the representative locations of the field mean SWC. This study provides useful information for designing the optimal strategy for sampling SWC at the oasis-desert ecotone in the arid inland river basin.

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“…Baroni et al (2013) concluded that, under drought conditions, the spatial distribution of soil moisture is mainly affected by the spatial variability of the vegetation. Wang et al (2015) highlighted that, in drier periods, the soil under vegetation tends to decrease its moisture levels due to transpiration, increasing its spatial variability.…”

Section: Introductionmentioning

confidence: 99%

Temporal stability of soil moisture in an experimental watershed in the Pernambuco semi-arid region

Silva

Montenegro

Melo

2016

Rev. bras. eng. agríc. ambient.

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A B S T R A C TSoil moisture estimation is very important in decision making regarding agricultural practices and investigations in hydrology. The aim of the study was to evaluate surface soil moisture temporal stability under two cover crop conditions in an experimental watershed in the Brazilian semi-arid region, aiming to identify stable points, thus reducing monitoring costs and highlighting the importance of temporal stability in a watershed. Fourty five soil moisture monitoring campaigns in the layers of 0-0.10 and 0.10-0.20 m were conducted using a capacitance probe (Diviner -2000®) during the period from 10/07/2010 to 03/25/2014, with soil cover under native bushy vegetation and degraded pasture, predominantly Brachiaria decumbens. Temporal stability was evaluated through the mean relative difference technique. The point located at the middle of a slope under pasture and bushes was the most stable, with determination coefficient of 90 and 92% for both layers.Estabilidade temporal da umidade do solo em bacia experimental do semiárido pernambucano R E S U M O A estimativa da umidade no solo é de grande relevância na tomada de decisão de práticas agrícolas e pesquisas na área da hidrologia. Objetivou-se, neste estudo, avaliar a estabilidade temporal da umidade do solo nas camadas superficiais em duas condições de cobertura vegetal em uma bacia hidrográfica experimental, no semiárido brasileiro, buscando-se identificar pontos com maior estabilidade da umidade desonerando, assim, custos de monitoramento e ressaltando a importância da estabilidade temporal em uma bacia hidrográfica. Realizaram-se 45 campanhas de monitoramento de umidade do solo nas camadas de 0-0,10 e 0,10-0,20 m utilizando a sonda capacitiva/Diviner -2000® no período de 07/10/2010 a 25/03/2014, com cobertura do solo e presença de vegetação arbustiva natural, além de pastagem degradada com predominância de capim Braquiária (Brachiaria decumbens). A estabilidade temporal foi avaliada por meio da diferença relativa média. O ponto localizado em meia-encosta da bacia em presença de pastagem foi o mais estável, com coeficientes de determinação de 90 e 92% para ambas as camadas.

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Effect of vegetation on the temporal stability of soil moisture in grass-stabilized semi-arid sand dunes

Cited by 72 publications

References 35 publications

Soil water content and temporal stability in an arid area with natural and planted grasslands

Soil water content and temporal stability in an arid area with natural and planted grasslands

Spatial-temporal variability of soil water content in a cropland-shelterbelt-desert site in an arid inland river basin of Northwest China

Temporal stability of soil moisture in an experimental watershed in the Pernambuco semi-arid region

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