Interaction Between Heavy Metals and Nitrogen Fertilizers Applied to Soil-Vegetable Systems

Zhou, Qian

doi:10.1007/s00128-003-0169-z

Cited by 55 publications

(28 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Some soil properties for the soil samples are given in Table 1. Soil pH (soil/water ratio of 1:2.5), organic matter, and CEC were determined by using standard methods of chemical analysis [16]. For total metal content determination, 1 g soil samples were digested directly into each pre-cleaned vessel and 15 mL of 37% HCl and then 5 mL of 65% HNO 3 were added; then the vessels were (Table 2).…”

Section: Methodsmentioning

confidence: 99%

Comparison of Extraction Procedures for Assessing Soil Metal Bioavailability of to Wheat Grains

Bakırcıoğlu

Kurtulus

İbar

2011

CLEAN Soil Air Water

View full text Add to dashboard Cite

Agricultural soils have been analyzed to elucidate whether the trace metal distribution changes in relation to agricultural activities and to predict environmental risk. In addition to the extractability of Cu, Mn, Ni, Pb, and Zn in soils was compared by single extraction (hydrochloric acid (HCl), ethylenediaminetetraacetic acid (EDTA), diethylenetriaminepentaacetic acid (DTPA), calcium chloride (CaCl 2 ), water (H 2 O)), and sequential extraction procedures. The modified Community Bureau of Reference (BCR) sequential extraction procedure (three-step) used to extraction of metals in soil samples. The extraction capacity of the analyzed metals was found by using single extraction procedures in the order: HCl > EDTA > DTPA > CaCl 2 > H 2 O. A single correlation analysis was used to investigate the relationship between extractable metal concentrations in soil solutions and metal accumulation in wheat grains. Simple correlation analyses indicated that the extractable Pb and Ni of soils by HCl, EDTA, and DTPA single extraction procedures were significantly correlated with the metal contents of wheat grains. For CaCl 2 , H 2 O, and BCR extraction procedures there was a relatively poor correlation between the extractable Cu, Mn, Ni, Pb, and Zn of soils and metal contents of wheat grains.

show abstract

Section: Methodsmentioning

confidence: 99%

Comparison of Extraction Procedures for Assessing Soil Metal Bioavailability of to Wheat Grains

Bakırcıoğlu

Kurtulus

İbar

2011

CLEAN Soil Air Water

View full text Add to dashboard Cite

show abstract

“…After removing litters from soil surface, undisturbed soil were sampled at depths of 0-20, 20-40, and 40-60 cm by 5-point quincunx sampling method (Zhou, 2003) using a shovel in each research plot. The soil samples of each soil layer from the five points were mixed together as the plot's samples, and a total of 36 mixed soil samples were collected for the purposes of the study.…”

Section: Sample Collection and Analysismentioning

confidence: 99%

“…Thus, smaller fractal dimensions indicate better soil structures and stability and higher erosion resistance. Likewise, higher fractal dimensions indicate poorer soil structures and stability (Zhou et al, 2008;Barral et al, 1998).…”

Section: Effects Of Vegetation Restoration On the Distribution And Stmentioning

confidence: 99%

Effects of vegetation restoration on the aggregate stability and distribution of aggregate-associated organic carbon in a typical karst gorge region

Tang

Cui

et al. 2016

Solid Earth

View full text Add to dashboard Cite

Abstract. Land use changes have a major impact on soil structure and soil nutrients. The influences of vegetation restoration on aggregate stability and soil carbon storage have been studied extensively, but the distribution of aggregate-associated carbon is not yet understood. The objective of this work was to study the influences of vegetation restoration on aggregate stability and distribution of soil organic carbon (SOC) associated with water-stable aggregates (WSAs) in a karst gorge region. The experiment was carried out in 2012 and included four land use types: bare land (BL), grassland (GL), shrubland (SL), and woodland (WL). Soil samples were collected from the 0-20, 20-40, and 40-60 cm depths, and aggregates were separated by a wet-sieving method. Aggregate stability and aggregatedassociated SOC were determined, and the relationships between water-stable aggregation with SOC were examined. The results showed that total SOC and SOC associated with WSAs of various sizes were the highest at a soil depth of 0-20 cm. In addition, the SOC contents of the WSAs increased as the soil aggregate sizes decreased. The SOC contents of the WSAs < 0.25 mm were highest except in the bare land, and the SOC contents of the aggregates < 0.25 mm comprised the majority of the total aggregate SOC contents. The aggregates were dominated by particles with sizes > 5 mm under dry-sieving treatment, while aggregates were predominantly comprised of WSAs < 0.25 mm under wet-sieving treatment. At a soil depth of 0-60 cm, the mean weight diameter (MWD), geometrical mean diameter (GMD), and fractal dimensions (D) of the dry aggregates and water-stable aggregates in the different types of land were ranked, in descending order, as WL > GL > SL > BL. The contents of WSAs > 0.25 mm, MWD, and GMD increased significantly, in that order, and the percentage of aggregate destruction (PAD) and fractal dimensions decreased significantly as the soil aggregate stability improved. SOC contents increased after vegetation restoration, and the average SOC content of WL was 2.35, 1.37, and 1.26 times greater than that in the BL, GL, and SL, respectively. We conclude that woodland and grassland facilitated WSA stability and SOC protection; thus, promoting the natural restoration of vegetation by reducing artificial disturbances could effectively restore the ecology and prevent soil erosion in karst regions.

show abstract

“…The increase in Cu and Zn in soils is associated mainly with NPK fertilizers (Kabata-Pendias, 2011). High application rates of nitrogen fertilizer to agricultural soils resulted in increased accumulation of some heavy metals such as Cd and Pb in agricultural products (Zhou, 2003).…”

Section: Introductionmentioning

confidence: 99%

Influence of long-term mineral fertilization on metal contents and properties of soil samples taken from different locations in Hesse, Germany

Czarnecki

Düring

2015

SOIL

View full text Add to dashboard Cite

Abstract. Essential and non-essential metals occur in soils as a result of weathering, industrial processes, fertilization, and atmospheric deposition. Badly adapted cultivation of agricultural soils (declining pH value, application of unsuitable fertilizers) can enhance the mobility of metals and thereby increase their concentrations in agricultural products. As the enrichment of metals in soils occurs over long time periods, monitoring of the long-term impact of fertilization is necessary to assess metal accumulation in agricultural soils. The main objective of this study was to test the effects of different mineral fertilizer variations on soil properties (pH, C org , and cation exchange capacity (CEC)) and pseudo-total and mobile metal contents of soils after 14 years of fertilizer application and to determine residual effects of the fertilization 8 years after cessation of fertilizer treatment. Soil samples were taken from a field experiment which was carried out at four different locations (210, 260, 360, and 620 m above sea level) in Hesse, Germany. During the study, a significant decrease in soil pH and an evident increase in soil carbon content and cation exchange capacity with fertilization were determined. The CEC of the soils was closely related to their organic C contents. Moreover, pseudo-and mobile metal (Cd, Cu, Mn, Pb, Zn) contents in the soils increased due to application of 14 years of mineral fertilizer treatments (N, P, NP, and NPK) when compared to control plots. Eight years after termination of the fertilization in the soil samples taken from soil profiles of the fertilized plots (NPK) for monitoring the residual effects of the fertilizer application, a decrease of 82.6, 54.2, 48.5, 74.4, and 56.9 % in pseudo-total Cd, Cu, Mn, Pb, and Zn contents, respectively, was determined.

show abstract

Interaction Between Heavy Metals and Nitrogen Fertilizers Applied to Soil-Vegetable Systems

Cited by 55 publications

References 0 publications

Comparison of Extraction Procedures for Assessing Soil Metal Bioavailability of to Wheat Grains

Comparison of Extraction Procedures for Assessing Soil Metal Bioavailability of to Wheat Grains

Effects of vegetation restoration on the aggregate stability and distribution of aggregate-associated organic carbon in a typical karst gorge region

Influence of long-term mineral fertilization on metal contents and properties of soil samples taken from different locations in Hesse, Germany

Contact Info

Product

Resources

About