Changes in soil nutrient and enzyme activities under different vegetations in the Loess Plateau area, Northwest China

Wang, Bing; Xue, Sha; Liu, Guo Bin; Zhang, Guanghui; Li, Gary; Ren, Zong Ping

doi:10.1016/j.catena.2011.12.004

Cited by 182 publications

(111 citation statements)

References 28 publications

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“…This process dramatically altered the soil physical, chemical, and microbiological properties by destroying the vegetation and increasing the rates of organic matter decomposition (Su et al, 2004). Previous studies reported that changes in the soil properties are attributed to cultivation and fertilization of the soil (He et al, 2007;Wang et al, 2012;Shen et al, 2010). Furthermore, the changes in the soils may involve shifts in nutrient contents and soil quality, as the natural grassland or forest plantation areas are expected to accumulate litter deposits, which are relatively more recalcitrant than the crop debris deposited in agricultural areas (Lauber et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

et al. 2017

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Abstract. The conversion of natural grassland into agricultural fields is an intensive anthropogenic perturbation commonly occurring in semiarid regions, and this perturbation strongly affects soil microbiota. In this study, the influences of land-use conversion on the soil properties and bacterial communities in the Horqin Grasslands in Northeast China were assessed. This study aimed to investigate (1) how the abundances of soil bacteria changed across land-use types, (2) how the structure of the soil bacterial community was altered in each land-use type, and (3) how these variations were correlated with soil physical and chemical properties. Variations in the diversities and compositions of bacterial communities and the relative abundances of dominant taxa were detected in four distinct land-use systems, namely, natural meadow grassland, paddy field, upland field, and poplar plantation, through the high-throughput Illumina MiSeq sequencing technique. The results indicated that landuse changes primarily affected the soil physical and chemical properties and bacterial community structure. Soil properties, namely, organic matter, pH, total N, total P, available N and P, and microbial biomass C, N, and P, influenced the bacterial community structure. The dominant phyla and genera were almost the same among the land-use types, but their relative abundances were significantly different. The effects of land-use changes on the structure of soil bacterial communities were more quantitative than qualitative.

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Section: Discussionmentioning

confidence: 99%

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

et al. 2017

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“…According to Lemanowicz and Krzy_ zaniak (2015), organic carbon served as a precursor for enzyme synthesis and played a vital role in the physical stabilization of the enzyme. Soil organic matter is an organic carrier of soil enzymes (Wang et al 2012). The enzyme activity of the controlled soil was higher from the soil from A and B point, but lower than C. According to Halasz et al (2011), high enzymes activity of the control area can be explained by the absence of wastes and the domination of plants.…”

Section: Enzyme Activitiesmentioning

confidence: 99%

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

2016

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The aim of the study was the assessment of the environmental contamination of soil by heavy metals and microorganisms within the uncontrolled landfill dumps and the impact of anthropogenic sources on the activity of selected soil surface horizons. Some physicochemical properties were determined according to commonly used procedures in soil science laboratories. The total of heavy metals concentration was assessed according to Crock and Severson and forms available according to Lindsay and Norvell. The total contents and mobile forms were determined by atomic absorption spectrophotometry. As part of the microbiological tests, potentially pathogenic evidence of bacteria was found indicating fecal contamination of the soil (E. coli and other coliform bacilli, Salmonella spp., and Enterococcus spp.). Quantitative analyses were carried out based on the calculation of the most probable number of microorganisms (MPN method). The activity of selected redox and hydrolases enzymes: the activity of dehydrogenases with the Thalmann method, catalase with the Johnson and Temple method, alkaline and acid phosphatase with the method of Tabatabai and Bremner. It was concluded that depending on the composition of the dump, the physicochemical properties of the soil were changed, too. Uncontrolled landfills significantly affected the increase or decrease in the pH of the tested soil and the organic content of the tested soil. The waste stored at the site affected the contamination of the soil by heavy metals to varying degrees. The results show that the most dangerous bacteria exist in the soil under the C landfill and this is where the greatest risk of soil contamination exists. The highest amount of selected enzymes activity was observed in soils under illegal C dumping sites. In the soil sourced from A and B landfills, the enzyme inhibition occurred which was linked to the lowering of the organic carbon. The results of the principal component analysis demonstrated that the content of heavy metals and the activity of enzymes are the indicators of anthropogenic pollution, whereas granulometric composition (sand and silt) is mainly associated with the natural environment.

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“…Forest soils generally have the best quality due to the development of climax vegetation and because we used these soils to compare them with annual and perennial crops. There is a vast literature about SOC decreasing land use as compared to forests (Wang et al, 2012), including Brazilian semiarid regions (Medeiros et al, 2015;Chazdon et al, 2016).…”

Section: Resultsmentioning

confidence: 99%

“…This problem is attracting the attention of producers and has resulted in a search for tools aimed at monitoring agricultural soil quality (Pandey et al, 2014). This quality depends on a large number of chemical, biological, physical, microbiological, and biochemical indicators and it may be affected by soil use (Wang et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

Enzymatic activity, microbial biomass, and organic carbon of Entisols from Brazilian tropical dry forest and annual and perennial crops

Notaro

Medeiros²,

Duda

et al. 2018

Chil. j. agric. res.

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Changes in soil nutrient and enzyme activities under different vegetations in the Loess Plateau area, Northwest China

Cited by 182 publications

References 28 publications

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

Land-use changes influence soil bacterial communities in a meadow grassland in Northeast China

Assessment of the content of heavy metals and potential pathogenic microorganisms in soil under illegal dumping sites

Enzymatic activity, microbial biomass, and organic carbon of Entisols from Brazilian tropical dry forest and annual and perennial crops

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