Influence of shrub roots on soil macropores using X-ray computed tomography in a shrub-encroached grassland in Northern China

Hu, Xia; Li, Xiaoyan; Guo, Lanlan; Liu, Yong; Wang, Pei; Zhao, Yun‐Duo; Cheng, Y.S.; Lyu, Yanli; Liu, Lianyou

doi:10.1007/s11368-018-2218-6

Cited by 28 publications

(15 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In addition, the root branch density was significantly correlated (p < 0.01) with the macropore branch density (Table 3). Therefore, these findings support our hypothesis that the relatively large number of macropores in the soil under the P. fruticosa shrubs could be attributed to root development (Hu et al 2016;Hu et al 2018). Meanwhile, the roots had little effect on the soil macropores in the alpine Kobresia meadow.…”

Section: Discussionsupporting

confidence: 83%

“…10b), numerous shrub roots and macropores were distributed horizontally throughout the surface soil (0-150 mm) beneath the interspace meadow patches of P. fruticosa shrubs. The results of Hu et al (2015Hu et al ( , 2018 suggested that the macroporosity of the soil under shrubs was greater than that of the soil under grassland, and that macropores are mainly formed by developed shrub root systems. Similarly, the macroporosity of the P. fruticosa shrubs was significantly greater than that of the interspace meadow patches of P. fruticosa shrubs.…”

Section: Discussionmentioning

confidence: 97%

“…Macropores are comprised of large soil voids and pathways, including root channels, cracks, fissures (Keith and Peter 1982;Haling et al 2013), and earthworm burrows (Capowiez et al 2016), which can permit the preferential flow of water and nutrients through the soil profile. Roots, water content and soil compaction are important factors of macropore formation (Gebhardt et al 2009;Hosseini et al 2018;Hu et al 2018). Furthermore, soil pore size distribution is an important soil physical property in relation to root development through their effect on mechanical resistance (Hosseini et al 2016).…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Characterization of Root Architectures and Soil Macropore Networks Under Different Ecosystems Using X-ray CT Scanning in the Qinghai Lake Watershed, NE Qinghai–Tibet Plateau

2019

J Soil Sci Plant Nutr

Self Cite

View full text Add to dashboard Cite

The objectives of this study were to visualise and quantify the soil macropore networks and root architectures within intact soil columns under different ecosystems and to investigate the influences of roots on soil macropore network characteristics. Intact soil columns with diameters of 110 mm and lengths of 400 mm were taken from alpine Kobresia meadow, interspace meadow patches of Potentilla fruticosa shrubs, Potentilla fruticosa shrubs and Artemisia sphaerocephala shrubs in the Qinghai Lake watershed of the NE Qinghai-Tibet Plateau. A Philips medical X-ray CT scanner was used to simultaneously visualise and quantify the soil macropore networks and root architectures. The results showed that macropores and taproots were concentrated in the top 0-150 mm. The root volume density of the P. fruticosa shrub was greater than that of the interspace meadow patches of P. fruticosa shrub and that of the alpine Kobresia meadow. The macroporosity and the root volume density of the soils under the P. fruticosa shrub patches were significantly greater than those in the soils under the other sites. The root volume density was significantly correlated with the macroporosity for the A. sphaerocephala shrubs (R 2 = 0.88) and the P. fruticosa shrubs (R 2 = 0.73). There were significant positive correlations between the volume density, branch density and mean angle of the roots and those of the macropores. Shrub roots invasion played an important role in the formation of macropores. The root volume density was the most important factor for the quantified characteristics and distributions of the macropores.

show abstract

Section: Discussionsupporting

confidence: 83%

Section: Discussionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Characterization of Root Architectures and Soil Macropore Networks Under Different Ecosystems Using X-ray CT Scanning in the Qinghai Lake Watershed, NE Qinghai–Tibet Plateau

2019

J Soil Sci Plant Nutr

Self Cite

View full text Add to dashboard Cite

show abstract

“…Através destes processos, a cobertura vegetal exerce algum controle sobre a quantidade de água e a velocidade com a qual esta atinge determinados horizontes do solo, ao reter e/ou redistribuir fluxos (Marques et al, 2018;Arcova et al, 2020a). A arquitetura de raízes e a matéria orgânica no solo, por sua vez, favorecem os fluxos de água entre perfis pedológicos (Centenaro et al, 2018;Hu et al, 2019;Lavallee et al, 2019). Assim, a deflagração de movimentos de massa ou a ocorrência de erosão superficial é, em alguma parte, resultante deste conjunto de interações entre a água da chuva e a vegetação, em associação à magnitude dos eventos pluviométricos (Arcova et al, 2020a;Paula et al 2020).…”

Section: Introductionunclassified

Efeitos da dinâmica pluviométrica na interceptação e precipitação interna em uma encosta com Floresta Atlântica no Parque Nacional da Tijuca, RJ, Brasil.

Miranda

Avelar

2021

Rev. Bras. Geog. Fis.

View full text Add to dashboard Cite

Given the importance of vegetation cover for the hydric balance, the present paper aimed to analyze the pluviometric dynamics for the net precipitation and interception process, in the forested hillslope in the Tijuca National Park. The influence by a set of independents variables given by hydrometeorological dynamics (rainfall volume and intensity and drought context) was discussed face the temporal modulation for interception and net precipitation, coupled a spatial analyze given by comparisons between hillslope positions (summit; upper hillslope; lower hillslope; valley bottom), where there is a vegetation structure heterogeneity originated by geomorphological context. The volume intercepted at each event varies directly proportional to the antecedent drought time, with the complementary effect of the rainfall volume in the previous 15-days. The percentual interception varies inversely proportional to the gross precipitation and its intensity. It is about the interception wich best manifests the significance of the spatial variations, with highlights for the summit área, where the canopy openness is bigger. The net precipitation varies under the strong influence – directly proportional – by gross precipitation volumes, being better explained with the complementary effect by the previous drought. The spatial variations on the net precipitation are less significant in comparison to the interception, decreasing the significance in the time of increase of the gross precipitation volumes.

show abstract

“…According to articles published, soil water infiltration capacity is mainly influenced by soil texture, soil structure, bulk density, porosity and soil organic matter (Zhang et al, 2007;Wu et al, 2016;Huang et al, 2017). Hu et al (2019) recently indicated that the increase of the root network density would led to the increase of soil macroporosity and macropore volume. Because most root's diameters are higher than soil pores, soil appears as a compacted material and the soil bulk density near the roots is higher than far from the roots (Zuazo and Pleguezuelo, 2008).…”

Section: Introductionmentioning

confidence: 99%

Alfalfa planting significantly improved alpine soil water infiltrability in the Qinghai-Tibetan Plateau

Huang

Sun

Liu

et al. 2019

Agriculture, Ecosystems & Environment

View full text Add to dashboard Cite

Influence of shrub roots on soil macropores using X-ray computed tomography in a shrub-encroached grassland in Northern China

Cited by 28 publications

References 48 publications

Characterization of Root Architectures and Soil Macropore Networks Under Different Ecosystems Using X-ray CT Scanning in the Qinghai Lake Watershed, NE Qinghai–Tibet Plateau

Characterization of Root Architectures and Soil Macropore Networks Under Different Ecosystems Using X-ray CT Scanning in the Qinghai Lake Watershed, NE Qinghai–Tibet Plateau

Efeitos da dinâmica pluviométrica na interceptação e precipitação interna em uma encosta com Floresta Atlântica no Parque Nacional da Tijuca, RJ, Brasil.

Alfalfa planting significantly improved alpine soil water infiltrability in the Qinghai-Tibetan Plateau

Contact Info

Product

Resources

About