Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region

Y., J.; Li, Z. B.; Ma, Bo

doi:10.1007/s11069-020-04157-8

Cited by 7 publications

(4 citation statements)

References 44 publications

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“…Lower elevations and gentler slopes generally favor increased soil fertility due to their enhanced capacity to retain moisture [ 20 ]. In these areas, gentler slopes provide sufficient moisture to support microbial activity and nutrient cycling [ 41 ]. Additionally, these regions experience relatively low soil erosion, allowing organic matter and nutrients to accumulate rather than being washed away by rainfall, thereby enhancing fertility.…”

Section: Discussionmentioning

confidence: 99%

“…In these areas, intense soil erosion tends to remove the fertile topsoil and nutrients, limiting the nutrient resources available to plants. Simultaneously, steep slopes accelerate water runoff, reducing the availability of moisture in the soil, which further restricts microbial activity and the bioavailability of nutrients [ 41 , 42 , 43 ]. These factors collectively lead to lower soil fertility in regions with high elevations and steep slopes.…”

Section: Discussionmentioning

confidence: 99%

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The Long-Term Effects of Barren Land Afforestation on Plant Productivity, Soil Fertility, and Soil Moisture in China: A Meta-Analysis

Liu,

Qin,

et al. 2024

Plants

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As global ecological degradation intensifies, the long-term impacts of afforestation on productivity and soil fertility in barren lands have become critical in improving global ecological security and productivity. Through meta-analysis, this study integrates data from 109 barren land afforestation sites across China, aiming to comprehensively analyze the effects on plant productivity and soil fertility while identifying the key environmental drivers of these changes. We found that afforestation consistently enhances plant productivity across 60 years. However, soil fertility and moisture initially surged significantly after afforestation but gradually declined after the first decade, indicating the limited long-term benefits. Climatic factors, namely precipitation and humidity index, are crucial in enhancing plant productivity, while geographic factors, specifically lower elevations and gentler slopes, are associated with greater increases in soil fertility. Elevation and slope are two key factors that influence soil moisture after afforestation. These findings highlight the need for ongoing soil management and ecological maintenance in afforestation projects to sustain the soil fertility benefits. Our study provides a robust scientific foundation for afforestation strategies aimed at barren land restoration and offers valuable insights for policy formulation in barren land afforestation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The Long-Term Effects of Barren Land Afforestation on Plant Productivity, Soil Fertility, and Soil Moisture in China: A Meta-Analysis

Liu,

Qin,

et al. 2024

Plants

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“…On the hilly and gully Loess Plateau, the slope‐gully system, consisting of hillslopes (gentle slopes) and gully areas (steep slopes), forms a fundamental geomorphic unit (Ma et al, 2020), supplying an essential source of catchment sediment yield. Hillslopes, dominated by rill and interrill erosion, lie between the dividing ridge and the shoulder line of gullies, with slope gradient being lower than 35° (Li et al, 2021b; Li et al, 2021a; Xu et al, 2021; Zheng, 2006).…”

Section: Methodsmentioning

confidence: 99%

Monitoring soil erosion on field slopes by terrestrial laser scanning and structure‐from‐motion

Ren

et al. 2023

Land Degrad Dev

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Terrestrial laser scanning (TLS) and structure‐from‐motion (SfM) photogrammetry are prevalent erosion monitoring techniques. However, their relative performance for field erosion monitoring remained unclear. In the study, five souring experiments were implemented on each of the three plots, consisting of hillslope and gully area, established on field slopes. The input flow for three hillslopes was 25, 55, and 85 L min−1 respectively while that for the gully area was 10 L min−1. TLS and SfM were used to monitor erosion processes, while their performance was assessed using manual measurements. Results showed that TLS and SfM produced generally sound and comparable soil loss estimates, with relative errors (REm) for the cumulative and consecutive sediment yield derived by the two techniques being −24.10% to +84.50% and −29.60% to +73.10% respectively. TLS estimated sediment yield more accurately than SfM for more intensively eroded areas, while the estimation accuracy of TLS was lower than SfM for less intensively eroded areas. On gully slopes, the two techniques broadly captured the spatial pattern of erosion and deposition, with inconsistency/errors emerging on areas with small topographic changes or caves; TLS generally produced more accurate rill length than SfM, with the REm for TLS being −2.18% to −0.16% and the REm for SfM being −7.09% to −1.49% respectively. TLS‐ and SfM‐derived rill networks were broadly consistent (Kappa coefficient was 0.42–0.79) and different in details. The SfM‐ and TLS‐derived level of detection was generally at the same order of magnitude. However, their spatial pattern on hillslopes was rather different, which informed a different erosion monitoring capacity of TLS and SfM on field hillslopes and needs further study. Overall, SfM provides a cost‐effective and powerful alternative to TLS for field erosion monitoring and a combined use of them may produce more satisfactory results.

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“…is unique erosion of the loess provides a platform for landslides. In addition, the loess layer structure in the groundwater seepage layer is below the water-proof layer, and its stratum structure is unstable [39][40][41]. Due to the influence of lithology, structure, and gully topography, the stability of the bottom of the slope mass is poor.…”

Section: Mining Landslide Characteristicsmentioning

confidence: 99%

The Formation Mechanism of Surface Landslide Disasters in the Mining Area under Different Slope Angles

Zhao

Zhang

et al. 2021

Advances in Civil Engineering

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Slope stability analysis is important for the safe mining of mineral resources. The collapse of goafs in loess gullies can lead to natural disasters such as surface landslides. In this context, this study analyzes monitoring data obtained from surface observation in the Shendong mining area of the Hanjiawan coal mine based on the geological conditions therein. The monitoring results show that the working face experiences a starting period, an active period, and a declining period, from the start of mining to the end of the working face. At the initial mining stage, there is no evident surface movement or deformation in the mining area. When the advance distance of the 12106 working face is between 13 m and 109 m, the surface movement and deformation vary significantly, and the maximum subsidence reaches 1963 mm, which is enough to cause landslides. We select the physical and mechanical parameters of the rock and soil in the mine and then simulate the formation mechanism of surface landslides under different slope angles of the mining area using FLAC3D software. Because of the collapse of the mined-out area, the overlying strata structure is destroyed, the subsidence basin is shifted to the center as a whole, and the slope mass is subjected to tensile and compression deformation, resulting in plastic damage, which develops downward along the crack and leads to a collapse because of the discontinuous movement and deformation of the surface; moreover, step-type ground fissures are produced. The results also show that when the slope angle is greater than 60°, the displacement of the slope mass is not uniform, and the rock stratum in a position with large displacement loses its support, leading to landslides; when the slope angle is less than 30°, the bedrock surface forms a sliding surface and develops to the surface, thus decreasing the possibility of landslides. Based on the stability analysis of the collapsed slope in the goaf of the loess gully, a scientific basis is provided for the effective prevention and control of geological disasters in the Shendong mining area.

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Influences of revegetation mode on soil water dynamic in gully slope of the Chinese Loess hilly–gully region

Cited by 7 publications

References 44 publications

The Long-Term Effects of Barren Land Afforestation on Plant Productivity, Soil Fertility, and Soil Moisture in China: A Meta-Analysis

The Long-Term Effects of Barren Land Afforestation on Plant Productivity, Soil Fertility, and Soil Moisture in China: A Meta-Analysis

Monitoring soil erosion on field slopes by terrestrial laser scanning and structure‐from‐motion

The Formation Mechanism of Surface Landslide Disasters in the Mining Area under Different Slope Angles

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