The contributions of root morphological characteristics and soil property to soil infiltration in a reseeded desert steppe

Wang, Bo; Liu, Jing; Li, Zhigang; Morreale, Stephen J.; Schneider, Rebecca L.; Xu, Dan; Lin, Xiongkui

doi:10.1016/j.catena.2023.107020

Cited by 18 publications

(8 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Grassland restoration be accelerated by reseeding native species, and grassland ecosystem functioning and soil quality can be restored. 61 However, replanting should be supplemented with forages that have strong resistance to it, such as M. sativa , while selection of P. pratensis and other Gramineae forages that are sensitive to it should be avoided. Local natural conditions and soil texture can also affect the establishment of native grasses.…”

Section: Discussionmentioning

confidence: 99%

Allelopathy and potential allelochemicals of Ligularia sagitta as an invasive plant

Wang,

Zhang

et al. 2024

Plant Signaling & Behavior

View full text Add to dashboard Cite

Allelopathy is the main chemical means in the invasion process of exotic plants and one of the key factors in grassland degradation. In this experiment, we investigated the effects of ethyl acetate phase extract (EAE), n-butanol phase extract (BE) and aqueous phase extract (AE) from the aboveground (stems and leaves) and roots of Ligularia sagitta on seed germination and seedling growth of four Gramineae forages ( Poa pratensis L. Festuca ovina L. Elymus nutans Griseb. Agropyron cristatum (L.) Gaertn.) in their sympatric domains and one Legosuminae forage ( Medicago sativa L.). The chemical components in each phase extract of L. sagitta were determined with UHPLC-MS/MS non-targeted metabolomics, and the differential compounds were screened using Orthogonal Partial Least Squares-Discriminant Analysis (OPLS-DA). Within a set concentration range, EAE significantly inhibited seed germination and seedling growth of four Gramineae forages. BE and AE acted mainly in the seedling growth stage and did not significantly inhibit forage seed germination. P. pratensis was most sensitive to L. sagitta extracts; at 2.0 mg/mL of EAE from roots, germination energy and germination rate of P. pratensis seeds were 0. L. sagitta extracts inhibited the growth of M. sativa seedlings and did not inhibit its seed germination. A total of 904 compounds were identified with UHPLC-MS/MS, among which 31, 64, 81 and 66 metabolites displayed different accumulation patterns in the four comparison groups (R.EAE vs. R.BE, R.EAE vs. R.AE, SL.EAE vs. SL.BE, SL.EAE vs. SL.AE), respectively. In particular, 9 compounds were found to be common up-regulated differential metabolites in the four comparison groups and were enriched in EAE. Additionally, N,N-dimethylaniline, Caffeic acid, 4-Hydroxybenzoic acid, 4-Hydroxybenzaldehyde and cis-9-Octadecenoic acid as potential allelochemicals in L. sagitta . The results of this study support efforts at finding alternative control plants for the restoration of poisonous grass-type degraded grasslands.

show abstract

Section: Discussionmentioning

confidence: 99%

Allelopathy and potential allelochemicals of Ligularia sagitta as an invasive plant

Wang,

Zhang

et al. 2024

Plant Signaling & Behavior

View full text Add to dashboard Cite

show abstract

“…Root reinforcement without freeze‒thaw action: Without freeze‒thaw action, a root–soil composite, in which the roots are intertwined, forms a uniform and effective “network” support system of roots [ 35 – 37 ]. At the same time, there is strong cohesion between soil particles and between roots and soil particles.…”

Section: Slope Stability Simulationmentioning

confidence: 99%

“…According to the above test results, combined with the research of other scholars, the attenuation mechanism of the root-soil composite strength due to freeze-thaw action is briefly summarized below (Fig 13 ): 1. Root reinforcement without freeze-thaw action: Without freeze-thaw action, a root-soil composite, in which the roots are intertwined, forms a uniform and effective "network" support system of roots [35][36][37]. At the same time, there is strong cohesion between soil particles and between roots and soil particles.…”

Section: The Influence Mechanism Of Freeze-thaw Cycles and Roots On T...mentioning

confidence: 99%

Effect of freeze‒thaw cycles on root–Soil composite mechanical properties and slope stability

Wang,

Jing,

Luo

et al. 2024

PLoS ONE

View full text Add to dashboard Cite

Natural disasters such as landslides often occur on soil slopes in seasonally frozen areas that undergo freeze‒thaw cycling. Ecological slope protection is an effective way to prevent such disasters. To explore the change in the mechanical properties of soil under the influence of both root reinforcement and freeze‒thaw cycles and its influence on slope stability, the Baijiabao landslide in the Three Gorges Reservoir area was taken as an example. The mechanical properties of soil under different confining pressures, vegetation coverages (VCs) and numbers of freeze‒thaw cycles were studied via mechanical tests, such as triaxial compression tests, wave velocity tests and FLAC3D simulations. The results show that the shear strength of a root–soil composite increases with increasing confining pressure and VC and decreases with increasing number of freeze‒thaw cycles. Bermuda grass roots and confining pressure jointly improve the durability of soil under freeze‒thaw conditions. However, with an increase in the number of freeze‒thaw cycles, the resistance of root reinforcement to freeze‒thaw action gradually decreases. The observed effect of freeze‒thaw cycles on soil degradation was divided into three stages: a significant decrease in strength, a slight decrease in strength and strength stability. Freeze‒thaw cycles and VC mainly affect the cohesion of the soil and have little effect on the internal friction angle. Compared with that of a bare soil slope, the safety factor of a slope covered with plants is larger, the maximum displacement of a landslide is smaller, and it is less affected by freezing and thawing. These findings can provide a reference for research on ecological slope protection technology.

show abstract

“…Fine roots (≤2 mm in diameter) are fundamental organs allowing plants to absorb soil nutrients and water, thereby promoting tree growth and determining forest productivity [1,2]. The morphological and chemical traits of fine roots are essential functional traits that mediate carbon and nutrient cycling in terrestrial ecosystems [3,4]. Forest thinning is an effective management practice used to enhance forest productivity and functionality primarily through optimizing stand structure, understory environment, and soil conditions [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Responses of Fine Root Morphological and Chemical Traits among Branch Orders to Forest Thinning in Pinus massoniana Plantations

Zhao,

Sun,

Wang

et al. 2024

Forests

View full text Add to dashboard Cite

Fine roots play an essential role in biogeochemical cycling in forest ecosystems; however, little is known about the response of fine root morphology and chemistry in different root orders to forest management activities such as forest thinning. We investigated the fine root morphological and chemical traits in different root orders of Pinus massoniana under different thinning intensities, namely no thinning, low-intensity thinning (LIT), middle-intensity thinning (MIT), and high-intensity thinning (HIT) (0%, 25%, 45%, and 65% of individual trees eliminated, respectively). We found that forest thinning increased the root diameter (RD) of absorptive roots and decreased that of transport roots, while the trend for the specific root length (SRL) was the opposite. LIT and MIT could increase specific surface area (SSA), especially the SSA of absorptive roots in the MIT treatment. The root tissue density (RTD) of all root sequences in the LIT treatment decreased but increased in the HIT treatment. For the fine root chemical traits, thinning increased the root carbon concentration (RCC) of absorptive roots. The root nitrogen concentration (RNC) and root phosphorus concentration (RPC) of first- to fourth-order roots increased in the LIT and MIT treatments after thinning. Meanwhile, thinning increased root lignin, cellulose, and non-structural carbohydrate (NSC) concentrations. Soil temperature, nitrate, and microbial biomass carbon were factors affecting variations in fine root morphology and chemistry. Forest thinning was likely to shift the absorptive roots’ foraging strategy into a resource-conserving one. Thinning increased fine root chemical traits in most root orders. These findings contributed to our ability to predict how belowground ecological processes are mediated by fine roots under forest management activities.

show abstract

The contributions of root morphological characteristics and soil property to soil infiltration in a reseeded desert steppe

Cited by 18 publications

References 38 publications

Allelopathy and potential allelochemicals of Ligularia sagitta as an invasive plant

Allelopathy and potential allelochemicals of Ligularia sagitta as an invasive plant

Effect of freeze‒thaw cycles on root–Soil composite mechanical properties and slope stability

Responses of Fine Root Morphological and Chemical Traits among Branch Orders to Forest Thinning in Pinus massoniana Plantations

Contact Info

Product

Resources

About