Impact of typical land use type on the stability and content of carbon and nitrogen of soil aggregates in western Hubei

Luo, Ting; Xia, Lu; Xia, Dong; Liu, Wenjing; Xu, Yakun; He, Zhiteng; Xu, Wennian

doi:10.1002/ecs2.4736

Cited by 5 publications

(2 citation statements)

References 42 publications

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“…Zhu et al (2017) note that the greatest differences between soils of different types of land use were found in the content of aggregates of fractions 2-5, 1-2, 0.25 mm. This indicates a greater indicator value of aggregates of fractions < 2 mm compared to aggregates of fractions >2 mm (Luo et al, 2023). The existence of close direct relationships between the sand content and the content of water-stable aggregates of the 3-5 mm (r = 0.74-0.96) and 2-3 mm (r = 0.70-0.93) fractions has been established.…”

Section: Discussionmentioning

confidence: 67%

Mechanisms of influence of forest ecosystems on the aggregate composition and water stability of soil aggregates in the semi-arid area of southeast Ukraine

Gorban,

Poleva,

Bilova

et al. 2024

Regul. Mech. Biosyst.

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Modern processes of climate change are accompanied by a number of negative factors, which include aridization, desertification, soil degradation and erosion. The research was were carried out on the territory that is the southern border of the distribution of the late glacial phase of the Dnieper glaciation (Middle Pleistocene, 100–230 thousand years ago). The influence of forest ecosystems on the aggregate composition and water stability of soil aggregates, the features of which determine the protection of soils from erosion and other degradation processes in semiarid conditions, was assessed. It has been established that luvic chernozems of forest ecosystems are characterized by an increased content of aggregates of fractions 2–3, 1–2 and 0.5–1.0 mm, as well as water-stable aggregates of fractions > 5, 0.5–1.0 and 0.25–0.5 mm in the 0–20 cm layer compared to ordinary chernozems of steppe ecosystems. The content of soil organic matter is a determining factor on which the aggregate composition and content of water-stable aggregates in luvic chernozems of forest ecosystems depends. The existence of close direct relationships has been established between the content of soil organic matter and the content of aggregates of the 0.5–1.0 mm fraction, as well as between the content of soil organic matter and the content of water-stable aggregates of fractions 3–5, 2–3 and 1–2 mm in chernozems of steppe and forest ecosystems. The existence of close direct relationships between the sand content and the content of water-stable aggregates of fractions 3–5 and 2–3 mm was revealed. The established increase in the content of soil organic matter and sand in luvic chernozems of forest ecosystems compared to ordinary chernozems of steppe ecosystems is the reason for the improvement in the aggregate composition and the increase in the content of water-stable aggregates. This is a key aspect of increasing the resistance of soils in forest ecosystems to various negative factors, such as desertification, degradation, wind and water soil erosion.

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Section: Discussionmentioning

confidence: 67%

Mechanisms of influence of forest ecosystems on the aggregate composition and water stability of soil aggregates in the semi-arid area of southeast Ukraine

Gorban,

Poleva,

Bilova

et al. 2024

Regul. Mech. Biosyst.

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“…Yang et al (2024) note an increase in the content of aggregates of the > 2 mm fraction during the restoration of forest vegetation, especially in the 0-40 cm layer. Luo et al (2023) found an increased content of aggregates of the > 2 mm fraction in forest soils. Thus, the content of aggregates of the fraction > 2 mm can be used as an indicator of the influence of forest vegetation on the aggregate composition of chernozems.…”

Section: Discussionmentioning

confidence: 86%

The influence of forest vegetation on the physical properties of chernozems in the steppe zone of Ukraine

Gorban,

Bilova,

Poleva

et al. 2024

Biosys. divers.

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Targeted changes in the physical properties of soils, including through afforestation, are an important component of land use practices that are aimed at obtaining sustainable crop yields, which is especially important for potentially highly fertile chernozem soils. The physical properties of ordinary chernozems under steppe vegetation (used as a control) and plantings of Robinia pseudoacacia L. and Quercus robur L., as well as chernozem luvosol under natural forest vegetation, were studied in the field, as well as in laboratory conditions using soil samples taken from 12 areas established within Dnipropetrovsk region (Ukraine). As a result of the study, it was established that the studied ordinary chernozems and luvic chernozems are classified as silty loam according to their granulometric composition. The growth of acacia and oak plantations led to an increase in sand content and a decrease in silt content, and the growth of natural forest vegetation contributed to an increase in sand and silt content and a decrease in clay content in black soils. The influence of forest vegetation on chernozems led in the 0–20 cm layer to an increase in the content of aggregates of fractions > 2 mm and water-resistant aggregates of fractions > 0.5 mm and a decrease in the content of aggregates of fractions < 1 mm and water-resistant aggregates of fractions < 0.5 mm compared to chernozems under steppe vegetation. The growth of forest vegetation caused a decrease in the density and density of the solid phase, and an increase in the total porosity of chernozems in the layers of 0–20 and 20–40 cm. The influence of forest vegetation on ordinary chernozems and luvic chernozems contributed to an increase in the content of available water for plants and an increase in their water permeability compared to ordinary chernozems under steppe vegetation. Ordinary chernozems under acacia and oak plantations are characterized by increased electrical resistivity, and luvic chernozems under natural forest vegetation are characterized by reduced electrical resistivity compared to ordinary chernozems under steppe vegetation. The growth of forest vegetation contributed to a decrease in the dielectric constant of chernozems. The influence of natural forest vegetation leads to more pronounced changes in the physical properties of chernozems compared to the influence of acacia and oak plantings.

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Impact of typical land use type on the stability and content of carbon and nitrogen of soil aggregates in western Hubei

Luo,

Xia,

Xia

et al. 2023

Ecosphere

Self Cite

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In order to investigate the characteristics of soil structural stability and the factors influencing it under typical land use types in the karst region of western Hubei, soil samples were collected from five land use types (natural mixed forest [NF], cypress forest [CF], stone dike terrace [ST], stone dike forest [SF], and abandoned land [AL]) in Xialaoxi to analyze the particle size distribution of aggregates, structural stability, and the distribution characteristics of carbon, nitrogen, and extracellular enzyme contents. The results showed that the aggregates of NF, CF, SF, and AL were dominated by >2‐mm aggregates, while ST showed mostly 2–0.25‐mm aggregates. The mean weight diameter (EMWD) and the geometric mean diameter (EGMD) of mechanical aggregates showed a trend of CF > NF > SF > AL > ST, whereas the erodibility factor K showed an opposite trend. The total organic carbon (TOC), labile organic carbon (LOC), and total nitrogen (TN) contents of aggregates of each particle size were significantly higher in NF and CF than in ST and AL under the five land types. The content of available nitrogen (AN) was highest in NF and ST. The content of carbon and nitrogen and extracellular hydrolases (β‐glucosidase [BG], cellulose disaccharide hydrolase [CBH], β‐N‐acetyl‐aminoglucosidase [NAG], and leucine aminopeptidase [LAP]) in soil aggregates were mainly concentrated in <0.25–0.053‐mm aggregates. The variation in carbon and nitrogen abundance of each particle size agglomerate mainly originated from the LAP content of that particle size agglomerate and showed significant correlation. The partial least squares path models (PLS‐PM) showed that the main influences on the stability of soil aggregates in small watersheds were land use types, soil physical properties, carbon and nitrogen abundance, and extracellular enzyme activity. In conclusion, the structural stability of soil aggregates in Xialaoxi watershed is the result of the interaction between human disturbance and soil nutrient self‐cycling. In general, NF and CF have better soil aggregate stability and are conducive to soil carbon and nitrogen accumulation, whereas for later development and management of SF, ST, and AL sample plots, scientific cultivation means should be adopted, and attention should be paid to long‐term carbon and nitrogen accumulation and conservation.

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Impact of typical land use type on the stability and content of carbon and nitrogen of soil aggregates in western Hubei

Cited by 5 publications

References 42 publications

Mechanisms of influence of forest ecosystems on the aggregate composition and water stability of soil aggregates in the semi-arid area of southeast Ukraine

Mechanisms of influence of forest ecosystems on the aggregate composition and water stability of soil aggregates in the semi-arid area of southeast Ukraine

The influence of forest vegetation on the physical properties of chernozems in the steppe zone of Ukraine

Impact of typical land use type on the stability and content of carbon and nitrogen of soil aggregates in western Hubei

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