Soil fertility indicators and soil stoichiometry in semi-arid steppe rangelands

Boudjabi, Sonia; Chenchouni, Haroun

doi:10.1016/j.catena.2021.105910

Cited by 42 publications

(17 citation statements)

References 63 publications

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“…Geographical and climatic factors would affect soil C, N, and P stoichiometric characteristics directly or indirectly by regulating vegetation growth (Zhou et al, 2018;Zhang et al, 2019;Wang X. G. et al, 2020;Boudjabi and Chenchouni, 2022). On a global scale, the soil C:N ratio increased, while the C:P ratio decreased with latitude, indicating that temperature and precipitation might regulate the soil stoichiometric patterns (Xu et al, 2013).…”

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confidence: 99%

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Tong

Wu²,

Jiang³

et al. 2023

Front. For. Glob. Change

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The crucial roles of soil carbon (C) and nutrients and their stoichiometric characteristics in indicating the soil interior nutrient cycling and plant nutrient supply of forest ecosystems have been widely verified, whereas it has been less explored when considering the influencing factors regionally, especially for the widely cultivated plantation tree species. In the current study, the patterns of soil organic C (SOC), total nitrogen (TN), and total phosphorus (TP) stoichiometry in Chinese fir [Cunninghamia lanceolata (Lamb.) Hook] plantations across subtropical China were analyzed, and their influencing factors were also investigated. The results showed that the range of SOC: TN (C:N), SOC: TP (C:P), and TN: TP (N:P) ratios were 7.32–18.27, 20.15–230.48, and 2.11–15.05 with a mean value of 13.22, 83.50, and 6.05, respectively. Well-constrained correlations were found in SOC and TN, as well as in TN and TP. Soil TN and TP contents increased with increasing altitude, whereas soil C:N, C:P, and N:P ratios decreased. Soil TP content decreased, and the C:P ratio increased with increasing mean annual temperature (MAT) and annual total solar radiation (ATSR). Soil C:N, C:P, and N:P ratios increased with increased mean annual precipitation (MAP) and mean annual evaporation (MAE). Overall, our findings suggested that the soil nutrient supply is relatively adequate in Chinese fir plantations across subtropical China. Meanwhile, soil C, N, and P stoichiometric characteristics were affected by geographical and climatic variables to different degrees.

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confidence: 99%

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Tong

Wu²,

Jiang³

et al. 2023

Front. For. Glob. Change

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“…Available phosphorus (AP) was determined by Olsen and Watanabe (1957) method [33]. The results of TOC, TN, and AP contents were used to calculate the carbon-nitrogen (C:N), carbon-phosphorus (C:P), and N:P ratios [34]. Finally, available water (AW) was calculated from the pF values at −33 and −1500 KPa using the Richards membrane method [35].…”

Section: Soil Physico-chemical Properties Measurementsmentioning

confidence: 99%

Short-Term Dynamics of Bacterial Community Structure in Restored Abandoned Agricultural Soils under Semi-Arid Conditions

Rodríguez-Berbel¹,

Soria²,

Villafuerte³

et al. 2022

Agronomy

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The restoration of unproductive abandoned agricultural soils under a semi-arid climate in southeastern Spain was evaluated. Four organic amendments from different composted wastes (greenhouse crop residues; worm compost from sheep–cow manure and plant remains; chicken manure; and sheep–chicken manure and plant remain) were applied, untreated control plots were installed, and natural unexploited soils were selected as a reference ecosystem. Through three sampling campaigns (initial, 3 months, and 12 months), significant changes were observed in soil physico-chemical properties, nutrient content (carbon -C-, nitrogen -N-, and phosphorus -P-), and bacterial composition of the restored soils with respect to control and natural soil, especially at 3 months. The increase of labile nutrients caused the proliferation of copiotrophic phyla at 3 months, which, after their consumption, were replaced by oligotrophic phyla at 12 months. Specific taxa involved in C, N, and P cycles were identified for each soil. For the soil bacterial composition of vermicompost, only chicken and sheep–chicken manures were more dissimilar to control and natural soils after 12 months, while greenhouse crop compost showed an intermediate position between them. Results indicated that composted greenhouse crop remains could be an optimal treatment for the short-term recovery of physico-chemical properties, nutrient content, and bacterial composition of agriculture-degraded soils in semi-arid areas.

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“…Therefore, it is necessary to determine a suitable soil fertility evaluation method for agricultural lands (Sadeghi et al, 2022). The proper understanding of soil fertility is very complex (Kabanyegeye et al, 2021), and knowing the exact state of soil fertility, in addition to studying soil properties, requires attention to environmental factors such as vegetation, climatic conditions, and topography (Boudjabi & Chenchouni, 2022). All these environmental factors are dependent on elevation conditions (Nariyanti et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of soil fertility in northwest Iran: A comparison based on elevation

Aqdam

Asadzadeh

Rezapour

et al. 2023

Preprint

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Soil fertility and nutrient management are the main factors that directly affect the yield of the product. To evaluate the soil fertility at different elevations (including 1600-2000, 2000-2400, 2400-2800, and >2800 m), 350 surface soil samples (0-30 cm) were collected from the agricultural lands of northwestern Iran. Then, soil properties, including soil texture (%), CaCO3 (%), pH, EC (dS.m-1), organic matter (OM) (%), and soil nutrients (macro and micro) (mg.kg-1), were measured. Finally, the interpretation and classification of the soil samples were made using the nutritional value index (NIV) based on the Gomez and Common methods. The comparison of the NIV index based on elevation changes showed that the Gomez method tends to classify the soil properties in the optimal class due to its tendency towards the center of the data. But the Common method is more consistent with reality. After classifying the NIV index using the Common method, it was determined that CaCO3 (%) and soil salinity is not the main problem for soil fertility in different elevation classes. However, in all elevations, high pH, low OM (%) at elevations >2800 m, total nitrogen (TN) (mg.kg-1), available phosphorous (AP) (mg.kg-1), and micronutrients deficiencies (except Zn at the elevation of 1600-2000 m) are the main limiting factors for soil fertility of agricultural lands. Therefore, to improve the soil fertility in all the elevations of the agricultural lands in the northwest of Iran, there is a need to improve the condition of macro and micronutrients (mg.kg-1), especially TN (mg.kg-1).

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Soil fertility indicators and soil stoichiometry in semi-arid steppe rangelands

Cited by 42 publications

References 63 publications

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Soil carbon, nitrogen, and phosphorus stoichiometry and its influencing factors in Chinese fir plantations across subtropical China

Short-Term Dynamics of Bacterial Community Structure in Restored Abandoned Agricultural Soils under Semi-Arid Conditions

Evaluation of soil fertility in northwest Iran: A comparison based on elevation

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