Chemical Analysis of Ecological Materials.

Kenworthy, J. B.; Allen, S. E.; Grimshaw, H. M.; Parkinson, John; Quarmby, C.

doi:10.2307/2258784

Cited by 346 publications

(60 citation statements)

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“…Three soil samples, down to 50 cm depth, were collected from each stand and mixed as one composite sample for each site. Soil texture was determined by the hydrometer method (Allen et al, 1974). Total organic matter was determined based on loss-on-ignition at 450 °C.…”

Section: Soil Analysismentioning

confidence: 99%

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RETRACTED: Vegetation analysis of Wadi Al-Jufair, a hyper-arid region in Najd, Saudi Arabia

Alatar

El‐Sheikh

Thomas

2012

Saudi Journal of Biological Sciences

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please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy). This article has been retracted at the request of the Editor-in-Chief and Author. Data processing errors have resulted in misleading conclusions. The scientific community in King Saud University has serious concerns regarding the results and the article will be resubmitted for publication after reprocessing of the data.

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Section: Soil Analysismentioning

confidence: 99%

“…Soil nutrient elements (Ca, K, Na, Mg, Fe, N and P) were determined using Spectrophotometer (model ICP MSEOS 6000 Series). All procedures are outlined by Allen et al (1974).…”

Section: Soil Analysismentioning

confidence: 99%

RETRACTED: Vegetation analysis of Wadi Al-Jufair, a hyper-arid region in Najd, Saudi Arabia

Alatar

El‐Sheikh

Thomas

2012

Saudi Journal of Biological Sciences

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“…SBD was measured by the cutting ring method (Grossman and Reinsch, 2002), and soil moisture (SM) was determined by oven drying soils at 105°C for 24 h. Soil pH was measured using a pH meter (soil to water ratio was 1:2.5) (Kenworthy et al, 1976). The total nitrogen content (TN) was measured by the Kjeldahl method using a 2,300 Kjeltec Analyzer Unit (FOSS, Sweden) (Bremner and Mulvaney, 1982).…”

Section: Soil Sampling and Physicochemical Analysesmentioning

confidence: 99%

Understory vegetation diversity, soil properties and microbial community response to different thinning intensities in Cryptomeria japonica var. sinensis plantations

Liu

Chen²,

Zhang³

et al. 2023

Front. Microbiol.

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IntroductionSoil microorganisms are the key factors in elucidating the effects of thinning on tree growth performance, but the effects of vegetation and soil on the species composition and function of soil microorganisms after thinning are still not well elaborated.MethodsThe effects of thinning on understory vegetation diversity, soil physicochemical properties and soil microbial community composition were investigated in a thinning trial plantation of Cryptomeria japonica var. sinensis, including four thinning intensities (control: 0%, LIT: 20%, MIT: 30% and HIT: 40%), and the relationships of the microbial community structure with the understory vegetation diversity and soil properties were assessed.ResultsThe results showed that thinning had a greater effect on the diversity of the shrub layer than the herb layer. The soil bulk density and the contents of soil organic matter, total potassium and nitrogen increased with increasing thinning intensities. The Shannon and Chao indices of soil bacteria and fungi were significantly lower in the LIT, MIT and HIT treatments than in the control. Thinning can significantly increase the abundance of Proteobacteria and Actinobacteria, and higher thinning intensities led to a higher relative abundance of Ascomycota and a lower relative abundance of Basidiomycota, Rozellomycota, and Mortierellomycota. Redundancy analysis indicated that soil physicochemical properties rather than understory vegetation diversity were the main drivers of microbial communities, and fungi were more sensitive to soil properties than bacteria. Functional prediction showed that thinning significantly reduced the potential risk of human diseases and plant pathogens, and the nitrogen fixation capacity of bacteria was the highest in the HIT treatment. Thinning significantly increased the relative abundance of cellulolysis and soil saprotrophs in bacteria and fungi.ConclusionThe findings provide important insights into the effects of thinning on C. japonica var. sinensis plantation ecosystems, which is essential for developing thinning strategies to promote their ecological and economic benefits.

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“…To estimate pH and electrical conductivity (EC), a soil water extract (1:5) was prepared by dissolving 100 g air-dried soil in 500 ml distilled water. Soil nutrient elements (Ca, K, Na, Mg, HCO3, CaCO3, and Cl) were measured following the methods described by (Allen, 1989;Ryan et al, 2001). All edaphic variables were statistically evaluated using COSTAT software for Windows version (4.6), and oneway analysis of variance was used to determine the significance of differences using SPSS for Windows version (25).…”

Section: Soil Analysismentioning

confidence: 99%

Floristic composition and vegetation analysis in Wadi AlFurayshah region, Saudi Arabia

Alzamel

2022

Journal of Environmental Studies

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The present study aimed to determine floristic composition, vegetation cover of different communities in Wadi AlFurayshah, Saudi Arabia, and highlighting the ecological factors that affect species distribution. A total of 26 plant species were collected and identified to be distributed among four plant communities: Ziziphus nummularia, Panicum turegidum, Acacia gerardii, and Haloxylon salicornicum. The main factors influencing plant presence were soil texture, CaCO3, Na, Mg, Ca, Cl, EC, pH and organic matter content. The majority of the registered species in this survey were perennials with 16 of the total recorded species (61.54%), followed by annuals by 10 species (38.46%).

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Chemical Analysis of Ecological Materials.

Cited by 346 publications

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RETRACTED: Vegetation analysis of Wadi Al-Jufair, a hyper-arid region in Najd, Saudi Arabia

RETRACTED: Vegetation analysis of Wadi Al-Jufair, a hyper-arid region in Najd, Saudi Arabia

Understory vegetation diversity, soil properties and microbial community response to different thinning intensities in Cryptomeria japonica var. sinensis plantations

Floristic composition and vegetation analysis in Wadi AlFurayshah region, Saudi Arabia

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