Soil-sediment linkage and trace element contamination in forested/deforested areas of the Itacaiúnas River Watershed, Brazil: To what extent land-use change plays a role?

Dall’Agnol, Roberto; Sahoo, Prafulla Kumar; Salomão, Gabriel Negreiros; Araújo, Alessandra Danieli Miranda de; Silva, Marcio Sousa da; Powell, M. A.; Ferreira, Jair da Silva; Ramos, Sílvio Júnio; Martins, Gabriel Caixeta; Costa, Marlene Furtado da; Guilherme, Luiz Roberto Guimarães

doi:10.1016/j.scitotenv.2022.154327

Cited by 5 publications

(5 citation statements)

References 78 publications

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“…In mountainous areas, groundwater feeds into surface water in the form of springs or underground rivers, and the mixing of surface water and groundwater will affect the hydrogeochemical composition of surface water [11][12][13]. Along with the runoff process, the river will exchange materials with the surrounding land, and different types of land use will also affect the materials exchanged with the surface water [14,15]. In recent years, the global temperature change caused by drastic climate change has also directly affected the precipitation recharge and evaporation of surface water [4,[16][17][18].…”

Section: Introductionmentioning

confidence: 99%

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Zhu,

Yang,

Xiao

et al. 2023

Water

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Rivers are an important source of water in humid regions, but their availability is greatly limited by water chemistry. In order to accurately identify the changes in river water chemical composition, the compositional analysis method (CoDA) is proposed from the perspective of compositional data analysis theory, which considers the geochemical riverine system as a whole and detects the compositional changes of the entire watershed. The basic data analysis is carried out by traditional analysis methods, and the results show that the hydrochemical characteristics of different sections of the basin have significant features. The water chemistry of Dongxi River is of the HCO3− Ca type. The water of the Xixi River shows a gradual evolution from the HCO3-Ca type and high SO42− content in the upper reaches to the Cl-Ca type in the lower reaches. The hydrochemistry of river water in the watershed is mainly affected by rock weathering leaching (PC1) and agricultural and domestic pollutant discharge (PC2), with a contribution rate of 48.4% and 19.7%, respectively. Rock weathering, mining, and agricultural pollution are the main factors affecting the chemical composition of river water in different regions. The spatial composition of a single sample at different scales is monitored by the Mahalanobis distance approach in an iterative manner to minimize the influence of a single anomaly on the composition center. The results show that the main reasons for the change in river water chemical composition along the Xixi River are attributed to mine pollution, domestic pollution, and tea plantation and that along the Dongxi River is caused by domestic pollution. The hydrochemical composition changes after the confluence of the Xixi River and Dongxi River are mainly affected by human activities and seawater in urban areas. This research could provide new perspectives and methods for detecting the influences of human and natural factors on the hydrochemistry of river water in humid regions worldwide.

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Section: Introductionmentioning

confidence: 99%

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Zhu,

Yang,

Xiao

et al. 2023

Water

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“…In this study, an RGB was used to calculate the mCd; therefore, natural processes that conditioned an enrichment of some metals in the CMP were considered. This is particularly important for mineral‐rich regions, such as CMP, which may present geochemical anomalies not associated with human activities (Dall'Agnol et al, 2022; Sahoo et al, 2020). It is noteworthy that, regardless of whether the PTE are naturally enriched or not, high levels can cause deleterious effects on living beings, which depends on several characteristics such as pH, OM, CEC, and texture, among others.…”

Section: Discussionmentioning

confidence: 99%

Combining approaches for environmental assessment of rehabilitated gold‐mining areas in the Eastern Amazon

Ramos,

de Oliveira,

Ribeiro

et al. 2024

Land Degrad Dev

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Monitoring key soil and vegetation attributes in mining areas under environmental rehabilitation is essential to ensure that the intervention techniques are effective. There are several approaches to monitoring mining areas and their integration is necessary to process large amounts of information. Thus, this study aimed to (i) assess soil multi‐contamination with potentially toxic elements (PTE) and human health risks; (ii) obtain a soil quality index with soil fertility data; (iii) calculate spectral index; (iv) show rehabilitation status based on vegetation attributes, and (v) compile these indices in a single measure. Four tailings' ponds (TPs), two waste piles (WPs), and an area of native forest from a gold mine in the Carajás National Forest were evaluated. Soil quality and vegetation cover are good in forest areas, with no evidence of PTE contamination. On the other hand, the TPs have poor fertility and vegetation cover, as well as higher levels of PTE. Human health risk indices obtained for all PTE were lower than 1, indicating a low risk to human health. The results of integrating the different indices suggest that the environmental conditions of the WPs are better than those of the TPs, which are still far from the environmental conditions of native areas. Soil attributes and vegetation development in TPs areas could be enhanced by the incorporation of organic materials and fertilizers and by planting species with phytoremediation potential. Finally, the integrative approach of the different indices proved to be useful in assessing the rehabilitation progress of the areas.

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“…Linear regression [56] was used to analyze the change trends of various hydrological indices and of LMs from 1990 to 2019 for the chosen watersheds. This type of analysis has been widely employed in previous relevant works and has shown reasonable results [43,57,58]. In addition, the F-test [59] was adopted to test the significance of the trend for each series at confidence levels of 0.05 and 0.01.…”

Section: Analysis Methodsmentioning

confidence: 98%

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

Wei

Dong

et al. 2023

Remote Sensing

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With rapid economic development, extensive human activity has changed landscape patterns (LPs) dramatically, which has further influenced hydrological processes. However, the effects of LPs changes on hydrological processes, especially for the streamflow–sediment relationship in the subtropical monsoon climate zone, have not been reported. In our study, 10 watersheds with different sizes in the subtropical monsoon climate zone of southeastern China were chosen as the study area, and the effect of the 14 most commonly used landscape metrics (LMs) on 4 typical hydrological indices (water yields (WY), the runoff coefficient (RC), the soil erosion modulus (SEM), and the suspended sediment concentration (SSC)) were analyzed based on land use maps and hydrological data from 1990 to 2019. The results reveal that the LP characteristics within the study area have changed significantly. The number of patches and landscape shape indices were significantly positively correlated with watershed size (p < 0.01). For most watersheds, the largest patch index was negatively correlated with WY, RC, and SEM, and the perimeter area fractal dimension was positively correlated with WY, RC, SEM, and SSC. The effects of several LMs on the hydrological indices had scale effects. WY/RC and the interspersion and juxtaposition index were negatively correlated in most larger watersheds but were positively correlated in most smaller watersheds. Similar results were found for Shannon’s diversity/evenness index and SEM. In general, an increase in a small patch of landscape and in landscape diversity would increase WY, the fragmentation of LPs would result in more soil erosion, and LPs would affect the relationship between streamflow and sediment yield. As a result, a proper decrease in landscape fragmentation and physical connectivity in the subtropical monsoon climate zone of southeastern China would benefit soil erosion prevention. These results enhance the knowledge about the relationship between LPs and hydrological processes in the subtropical monsoon climate zone of southeastern China and benefit local water and soil conservation efforts.

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Soil-sediment linkage and trace element contamination in forested/deforested areas of the Itacaiúnas River Watershed, Brazil: To what extent land-use change plays a role?

Cited by 5 publications

References 78 publications

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Identification of Hydrochemical Characteristics, Spatial Evolution, and Driving Forces of River Water in Jinjiang Watershed, China

Combining approaches for environmental assessment of rehabilitated gold‐mining areas in the Eastern Amazon

Relationships between Landscape Patterns and Hydrological Processes in the Subtropical Monsoon Climate Zone of Southeastern China

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