Relationship between land use and soil erosion in a typical area in the tableland and gully region of the Loess Plateau, China

Zhang, Jianxiang; Wang, Nai’ang; Duoyong, Zhang; Su, Xianbao

doi:10.22541/au.158325509.99091544

Cited by 3 publications

(4 citation statements)

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“…Based on pertinent studies in loess hilly gully areas and combined with the actual situation of the WRB [17,30], P of 0.2, 0.6, 0.8, 0, 0, and 1 were obtained for arable land, forest land, grassland, water area, construction land, and unused land, respectively.…”

Section: Rusle Modelmentioning

confidence: 99%

Spatiotemporal Variation in the Coupling Relationship between Human Activities and Soil Erosion—A Case Study in the Weihe River Basin

Zhao,

Huo,

Liu

et al. 2023

Sustainability

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Studying the relationship between human activities and soil erosion on a regional scale is of great significance for macro-decision-making in soil erosion prevention and control. The entropy weight method and RUSLE model are used to analyze the spatiotemporal variation in human activity intensity (HAI) and soil erosion in the Weihe River Basin (WRB) from 2005 to 2020. Through geographic detectors and a four-quadrant model, the impact of various driving factors and the coupling degree of the human–land relationship are studied. The results showed: (1) During the past 15 years, the moderate, high, strong, and severe erosion areas in the WRB decreased by 9.88%, 35.89%, 45.17%, and 70.05%, respectively. The ratio of the historical sand transport modulus to the RUSLE model result is 0.83, indicating that the results obtained by the RUSLE model can be used for further analysis. (2) Slight and weak degrees account for 80% in the northwest region. The high and strong regions are mainly distributed in the Shaanxi section, accounting for 3% of the total basin. (3) The coupling between human activities and soil erosion is constantly strengthening, and the joint effect of pop and crop is the main reason for the slowdown and spatial differences in soil erosion. This indicates that the ecological environment became stable. These findings contribute by acting as references for soil and water conservation and management in the WRB to promote a harmonious relationship between humans and the environment.

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Section: Rusle Modelmentioning

confidence: 99%

Spatiotemporal Variation in the Coupling Relationship between Human Activities and Soil Erosion—A Case Study in the Weihe River Basin

Zhao,

Huo,

Liu

et al. 2023

Sustainability

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“…This agreed with the results of Bai [67], who stated that a higher SAN content was found in middle-and late-aged alfalfa pastures, especially in the upper 60 cm range. With an increase in the number of alfalfa growth years, the soil bulk density of each alfalfa pasture soil layer decreased as the total porosity increased [68,69]. At the same time, it was found that the soil C/N ratio decreased after planting alfalfa over 10 years; this enhanced the mineralization and organic matter decomposition of soil microorganisms [69].…”

Section: Factors Affecting Soil Soc Stn and Sanmentioning

confidence: 99%

“…With an increase in the number of alfalfa growth years, the soil bulk density of each alfalfa pasture soil layer decreased as the total porosity increased [68,69]. At the same time, it was found that the soil C/N ratio decreased after planting alfalfa over 10 years; this enhanced the mineralization and organic matter decomposition of soil microorganisms [69]. The productivity and water use efficiency of alfalfa decreased, and the root death increased during late growth, reducing the amount of organic matter injected into the soil [9].…”

Section: Factors Affecting Soil Soc Stn and Sanmentioning

confidence: 99%

Responses of Deep Soil Carbon and Nitrogen Contents to Long-Term Retention of Alfalfa Pasture on Infertile Loess: A Synthesis Study

Ali

Wang

2023

Agronomy

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Incorporating perennial pastures into annual crop systems is an efficient means of improving soil carbon (C) sequestration and reducing the application of nitrogen (N) fertilizer on farmlands. How the soil C and N at different soil depths respond to the length of pasture duration and rainfall conditions is still being determined. In this study, we conducted a meta-analysis of data from 63 published studies to investigate the impacts of the alfalfa pasture on the incorporation of soil organic carbon (SOC), total nitrogen (STN), and available nitrogen (SAN) contents in the 0–300 cm soil profile of the Loess Plateau. An annual crop field was taken as a reference. The results showed that the average SOC content at soil depths of 0–100 and 100–200 cm in the alfalfa pasture increased by 17% and 8% (p < 0.001) compared to the crop field, respectively, while that at 200–300 cm decreased (p > 0.05). The SOC content increased with pasture age; it was the highest when the alfalfa had been planted for 5–9 years and decreased thereafter. The STN content at soil depths of 0–100 and 100–200 cm increased by 19% and 14% (p < 0.001), respectively; the content at depths of 200–300 cm only increased slightly (p > 0.05). It also increased the most when the alfalfa was 5–9 years old. The increments in the SAN content at the 0–100 and 100–200 cm soil depths were higher than those of the STN, with values of 29% and 18%, respectively, while those at depths of 200–300 cm also changed insignificantly (p > 0.05). The SAN content continuously increased with the age of the alfalfa, and the average increment in the 0–300 cm profile was as high as 21% when the alfalfa was ≥10 years old. The SOC and STN content increased the most under moderate rainfall conditions (350–500 mm), while the SAN content maintained the highest increment under high rainfall (500–650 mm) conditions. Therefore, ley farming with the alfalfa pasture contributed substantially to the soil C and N at depths of 200 cm in deep loess. Alfalfa should be removed in its middle ages to increase C sequestration while utilizing soil N efficiently.

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“…Soil is the basis for the dynamic circulation and flow of carbon, nitrogen, phosphorus, potassium and other nutrient elements in the terrestrial ecosystem, and is the matrix for the normal growth and development of forests [16][17][18][19][20]. At the same time, forests play an important role in improving soil texture, enhancing species resources, enhancing water conservation functions, and promoting ecological restoration [21][22][23][24][25]. Therefore, soil and forest are interdependent communities.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Canopy Density on Cycling of Soil Available N in Different Landform of Loess Plateau in China

Fu,

He,

Qian

et al. 2024

AJESE

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In this paper, a total of 330 soil samples with 0-100cm soil depth of 66 planted square forest (10*10m) with different canopy density in the Loess Plateau were selected for the determination and analysis of soil N content in different soil layers, and the effects of different canopy density on soil N cycle under different topographic factors of planted forest were studied. The results showed as follows: (1) the migration mechanism of different N forms to the root surface was different, the migration of nitrate nitrogen to the root surface mainly depended on mass flow, there was enrichment phenomenon near the root, ammonium nitrogen mainly through diffusion, resulting in deficiency and loss in the near rhizosphere, and the leaching loss of nitrate nitrogen was affected by soil water and root growth. (2) The thickness, composition and decomposition rate of litter were different due to different canopy density, which affected the content of ammonium nitrogen and nitrate nitrogen in forest soil. (3) Although the change of different regions in this region was spatially different, keeping the stand cover in the middle and high range of 0.75-0.8 can be conducive to maintaining the balance between the consumption of soil nutrients by the stand and the supplement of nutrient consumption, which can also be conducive to the sustainable recovery and growth of the stand in this region.

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Relationship between land use and soil erosion in a typical area in the tableland and gully region of the Loess Plateau, China

Cited by 3 publications

References 0 publications

Spatiotemporal Variation in the Coupling Relationship between Human Activities and Soil Erosion—A Case Study in the Weihe River Basin

Spatiotemporal Variation in the Coupling Relationship between Human Activities and Soil Erosion—A Case Study in the Weihe River Basin

Responses of Deep Soil Carbon and Nitrogen Contents to Long-Term Retention of Alfalfa Pasture on Infertile Loess: A Synthesis Study

Study on the Influence of Canopy Density on Cycling of Soil Available N in Different Landform of Loess Plateau in China

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