Soil Erosion Processes and Geographical Differentiation in Shaanxi during 1980–2015

Lin, Jifeng; Lin, Yunhong; Zhao, Hongfei; He, Hongming

doi:10.3390/su141710512

Cited by 6 publications

(4 citation statements)

References 55 publications

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“…Shanxi Province is a typical region in the Loess Plateau, which suffers severe ecological problems from nature factors and human activities. First, due to the special geological and climatic conditions, it has severe soil erosion and a fragile ecological background [54,55]. Besides, as most of the mineral resources are distributed within the mountain areas in the whole province, high-intensity and large-scale mining have caused serious damage to the ecological environment [31].…”

Section: Construction Of Resistance Surface In Plateau Areasmentioning

confidence: 99%

Ecological Security Pattern Construction in Loess Plateau Areas—A Case Study of Shanxi Province, China

Fu,

Zhang,

Gao

et al. 2024

Land

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Strong soil erosion and increasing human activities have made Loess Plateau areas ecologically fragile regions. Constructing the ecological security pattern (ESP) is imperative to maintain their ecosystem functions and sustainable development. However, it is still challenging to establish the ESP in such an unstable and scattered ecological environment. In this study, we take Shanxi Province, which suffers severe ecological problems in Loess Plateau areas, as an example to construct the ESP in a pattern of “source-resistance-corridor”. The proposed methods include the following steps: (1) potential ecological sources are selected with important ecosystem functions based on contributions of soil and water conservation, habitat quality, and carbon storage; (2) ecological sources are determined by considering core areas at the landscape scale based on morphological spatial pattern analysis (MSPA) along with stability based on dynamic assessment on previous sources; (3) the comprehensive resistance surface is constructed by multiple resistance factors and remotely sensed nighttime light data; (4) ecological corridors are simulated and extracted based on circuit theory. As a result, the proposed ESP in our study area mainly includes 13,592 km2 of ecological sources, 8519.64 km of ecological corridors, and 277 ecological nodes. Meanwhile, an ecological framework of “two axes, three belts, and three zones” was proposed based on the optimization and reorganization of ecological components within the ESP. Our research lays a methodological and practical foundation for regional ESP construction and sustainable development in Loess Plateau areas.

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Section: Construction Of Resistance Surface In Plateau Areasmentioning

confidence: 99%

Ecological Security Pattern Construction in Loess Plateau Areas—A Case Study of Shanxi Province, China

Fu,

Zhang,

Gao

et al. 2024

Land

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“…Therefore, accurate estimation of soil erosion is crucial for water resource management and increasing agricultural production efficiency [4]. The universal soil loss equation (USLE) and its revised version RUSLE are widely used globally to quantify and predict soil erosion [5][6][7][8][9][10]. In these models, soil loss is determined by various factors, but among these factors, rainfall erosivity (RE) is the pivotal determinant in water-induced soil erosion, signifying rainfall's potential capacity to induce erosion.…”

Section: Introductionmentioning

confidence: 99%

Spatiotemporal Variability in Rainfall Erosivity and Its Teleconnection with Atmospheric Circulation Indices in China

Liu,

Dong,

Liu

et al. 2023

Sustainability

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Rainfall erosivity (RE) is a critical factor influencing soil erosion, and soil erosion is closely related to land ecosystem health and long-term sustainable utilization. To ensure regional stable food supply and ecological balance, it is crucial to study the spatiotemporal distribution and influencing factors of RE. This study focuses on China and its three natural regions using daily precipitation data from 611 stations from 1960 to 2020. The study analyses the spatiotemporal changes in RE. Rainfall events were classified as moderate, large, and heavy based on rainfall intensity. The RE contribution from different rainfall levels to the total RE was analyzed, and the key climatic drivers closely linked to RE were identified using random forest. The results demonstrate that (1) on a national scale, RE shows a significant increasing trend, marked by an 81.67 MJ·mm·ha−1·h−1/decade. In the subregions, the Eastern Monsoon Region (EMR) and Qinghai–Tibet Plateau Region (QTR) show a significant increasing trend, with a greater change rate in EMR of 108.54 MJ·mm·ha−1·h−1/decade, and the Northwest Arid Region (NAR) shows a nonsignificant upwards trend. (2) The average RE increases northwest–southeast nationwide, ranging from 60.15 MJ·mm·ha−1·h−1 to 31,418.52 MJ·mm·ha−1·h−1. The RE contribution generated by different rainfall levels to the total RE exhibits spatial variations. The dominant types show that EMR is influenced by heavy RE, NAR is dominated by large RE, and QTR is affected by moderate RE. (3) The REs are associated with teleconnection indices, but the impact of these indices varies in different regions. The Western Hemisphere Warm Pool has the greatest impact on the EMR, while the North Atlantic Oscillation and Atlantic Multidecadal Oscillation are the factors influencing RE in NAR and QTR, respectively. (4) On a national scale, for every 1 mm increase in annual total rainfall, the RE increased by 8.54 MJ·mm·ha−1·h−1, a sensitivity of 8.54 MJ·mm·ha−1·h−1/mm. For the three subregions, there are differences in the sensitivity of RE to changes in annual precipitation. The highest sensitivity is found in EMR, at 8.71 MJ·mm·ha−1·h−1/mm, which is greater than the sensitivity indices in NAR (6.19 MJ·mm·ha−1·h−1/mm) and QTR (3.60 MJ·mm·ha−1·h−1/mm). This study can provide theoretical references for future regional soil erosion prediction and sustainable agricultural development in China.

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“…The hilly and gully areas of the Loess Plateau are the areas with the most severe soil erosion in China and even the world (Wang et al, 2022). The research of soil and water conservation in this area has important scientific research significance, which not only promotes the development of ecological environment and improves living conditions, but also provides a basis for soil erosion research in others area (Lin et al, 2022). The granularity composition of flood sediment has an important indicating role in transportation force, flood frequency and rainstorm events.…”

Section: Introductionmentioning

confidence: 99%

Research on flood sediments and rainstorm events in Huangtuwa, Northern Shaanxi

Shi¹,

Yue²,

Jing-bo³

et al. 2023

Front. Environ. Sci.

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The research purpose of this paper is to reveal the relationship between flood deposits, rainfall and flooding in the Loess Plateau over the last 50 years. The research in this paper is of great significance as it reveals the torrential flood events and soil erosion in the central region of the Loess Plateau. Through grading analysis and 137Cs content determination of a closed lake sedimentary profile formed by landslide-blocked rivers in middle part of Loess Plateau, Zizhou County, Shaanxi Province, the age of the sedimentary formation in the section, as well as the rainstorm events and changes of soil erosion since 1954 are studied. The results show that the sediment particle size composition in the study section is fine, mainly comprising of coarse silt, while the content of sand particles (>100 μm) is very low. The changes in137Cs content show that the sedimentary layer at a depth of 280–210 cm in the research profile was formed between 1954 and 1964, while the deep sedimentary layer at 210–70 cm was formed between 1965 and 1986 and the sedimentary layer above 70 cm depth was formed between 1987 and 2011. In total, 20 coarse particle layers (particle size >50 μm) were deposited in the lake between 1954 and 2011. The sedimentation timing of the 20 coarse particle layers was basically consistent with the timing of rainstorm events (daily rainfall ≥60 mm) in the study area, indicating that the coarse particle sediments in the lake represent rainstorm events. Soil erosion was stronger between 1954 and 1985 and was weaker after 1986.

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Soil Erosion Processes and Geographical Differentiation in Shaanxi during 1980–2015

Cited by 6 publications

References 55 publications

Ecological Security Pattern Construction in Loess Plateau Areas—A Case Study of Shanxi Province, China

Ecological Security Pattern Construction in Loess Plateau Areas—A Case Study of Shanxi Province, China

Spatiotemporal Variability in Rainfall Erosivity and Its Teleconnection with Atmospheric Circulation Indices in China

Research on flood sediments and rainstorm events in Huangtuwa, Northern Shaanxi

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