Efficiently Evaluating Heavy Metal Urban Soil Pollution Using an Improved Entropy-Method-Based Topsis Model

Liu, Jie; Chun, Liu; Wang, Han

doi:10.1007/s00244-016-0304-6

Cited by 11 publications

(10 citation statements)

References 9 publications

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“…In order to make full use of the advantages of EGM (1,1) and Verhulst model, we consider the following hybrid model: (10) The values of parameters a, b, c, d and λ can be obtained by solving the minimum values of the following functions. (11) where x(t) is the original sequence, is the predicted sequence obtained by employing hybrid model, and SSR are residual sum of squares. The relative error, mean square error ratio and small error probability proposed by Liu are used to test the applicability of the gray model [13].…”

Section: Hybrid Grey Modelmentioning

confidence: 99%

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Assessment and Prediction for China’s Regional Agricultural Sustainability

2021

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This paper proposes a sustainable agricultural development index (SADI) and a hybrid grey model for measuring the changes in agricultural sustainability over time. Firstly, a comprehensive indicator system for co-evaluating the level of agricultural economy, resource, environment, ecology, technology and rural society is presented based on a holistic understanding of agricultural sustainability. Then, the entropy-based TOPSIS model, grey prediction theory and genetic algorithm are combined to build a synthesis method for evaluating and predicting agricultural sustainability and detecting its regional heterogeneity. Furthermore, an empirical study at a provincial scale is conducted by collecting panel data from 2003 to 2017. The result shows that regional agricultural sustainability in China will continue to improve, with different rates in the different provinces from 2020 to 2030. And the regional heterogeneity of agricultural sustainability will increase significantly.

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Section: Hybrid Grey Modelmentioning

confidence: 99%

“…We use formulas (8)- (11) to predict agricultural sustainability from 2020 to 2030. The mixed grey model parameters and the predicted values of SADI obtained by genetic algorithm are shown in Table 3.…”

Section: Regional Agricultural Sustainability From 2020 To 2030mentioning

confidence: 99%

Assessment and Prediction for China’s Regional Agricultural Sustainability

2021

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“…When TOPSIS was proposed, VN was suggested as the normalization method [1], which is frequently used for TOPSIS [21][22][23]. However, in some studies, VN was replaced by other normalization methods when using TOPSIS, such as MMN [24][25][26].…”

Section: The Limitations and Problems Of Cm-topsismentioning

confidence: 99%

A Novel Coordinated TOPSIS Based on Coefficient of Variation

Chen

2019

Mathematics

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Coordinated Technique for Order Preference by Similarity to Ideal Solution (TOPSIS) is a significant improvement of TOPSIS, which take into account the coordination level of attributes in the decision-making or assessment. However, in this study, it is found that the existing coordinated TOPSIS has some limitations and problems, which are listed as follows. (1) It is based on modified TOPSIS, not the original TOPSIS. (2) It is inapplicable when using vector normalization. (3) The calculation formulas of the coordination degree are incorrect. (4) The coordination level of attributes is interrelated with the weights. In this paper, the problems of the existing coordinated TOPSIS are explained and revised, and a novel coordinated TOPSIS based on coefficient of variation is proposed to avoid the limitations. Comparisons of the existing, revised, and proposed coordinated TOPSIS are carried out based on two case studies. The comparison results validate the feasibility of the proposed coordinated TOPSIS.

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“…Therefore, the issues related to concentrations of this element in urban soils is a popular topic in the scientific literature [4][5][6]. Excessive accumulation of lead in the surface levels of urban soils may pose a threat to their ecological safety [7,8]. This is of particular importance for amateur vegetable and fruit cultivation in urban allotment gardens [4].…”

Section: Introductionmentioning

confidence: 99%

Biomonitoring of the Urban Environment of Kielce and Olsztyn (Poland) Based on Studies of Total and Bioavailable Lead Content in Soils and Common Dandelion (Taraxacum officinale agg.)

Zajęcka

Świercz

2021

Minerals

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Kielce and Olsztyn are two different urban ecosystems. They differ from each other in terms of geological and climatic conditions, as well as spatial development and industrial past. The aim of this article is to assess and compare the degree of lead contamination of the natural environment in both cities based on the conducted tests of soils, as well as a common dandelion’s roots and leaves. For this study’s purpose, 60 samples of soils and common dandelion’s roots and leaves were collected in each city, according to four land-use types, namely industrial areas, urban green areas, urban allotment gardens, and urban forests. Basic physico-chemical properties and concentrations of lead, i.e., total content and bioavailable content were determined in the soils, using speciation analysis. Lead concentrations in the roots and leaves of common dandelion were, in turn, determined using the ICP-OES method. By using kriging models, spots with excessive lead concentrations differing from the geochemical background were identified in each city. The number of spots was comparable for both cities; however, the values for this metal differed significantly. No relationship has been found between land-use types and concentrations of lead in soils and common dandelions. The results of the study, as well as statistical and spatial analyses show that this species may be recommended as an indicator for biomonitoring of urban environments.

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Efficiently Evaluating Heavy Metal Urban Soil Pollution Using an Improved Entropy-Method-Based Topsis Model

Cited by 11 publications

References 9 publications

Assessment and Prediction for China’s Regional Agricultural Sustainability

Assessment and Prediction for China’s Regional Agricultural Sustainability

A Novel Coordinated TOPSIS Based on Coefficient of Variation

Biomonitoring of the Urban Environment of Kielce and Olsztyn (Poland) Based on Studies of Total and Bioavailable Lead Content in Soils and Common Dandelion (Taraxacum officinale agg.)

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