Suitability Evaluation for Land Reclamation of Nonmetallic Mines in Xinjiang, China

Abstract

The ecological environment is fragile in Xinjiang, so it is necessary to carry out land reclamation for mines to restore its ecology. The premise of mines land reclamation is to determine the direction of land reclamation, which requires the suitability evaluation for land reclamation. In this paper, the evaluation index system and suitability evaluation model for land reclamation of nonmetallic mines in Xinjiang Uygur Autonomous Region were established. This model was established by using factor analysis, cluster analysis, and discriminant analysis and tested by back-substitution. First, using 149 units of 21 nonmetallic mines as research samples, the samples were divided into 4 categories by a combination of factor and cluster analysis. Then, the samples were trained using a discriminant analysis method to establish the corresponding land reclamation suitability evaluation model. This model was verified by back-substitution with an accuracy of 98.7%, and only 2 of 149 samples were misclassified. Finally, the evaluation model was applied to the Dabancheng Toga Solo limestone mine in Urumqi. Evaluation analysis of 15 land reclamation units of this mine showed satisfactory results. The evaluation model developed here could serve as a powerful complement to the evaluation of land reclamation suitability in Xinjiang.

Assessing the Land Reclamation Suitability of Beam Fabrication and Storage Yard in Railway Construction: An AHP-MEA Method

“…Terrain slope [14,18] Effective soil layer thickness [19] Soil texture [20,21] Organic matter content [22] Soil erosion degree [23] Water-soil pollution degree [24,25] Ease of reclamation Furthermore, to ensure the rationality of the evaluation indicators, the initially selected evaluation indicators were reviewed through questionnaire surveys to establish the final LRS evaluation indicator system of BFSY. The five-level Likert scale was used to determine the importance of each evaluation indicator.…”

“…These studies provide diverse insights into assessing land reclamation suitability (LRS). However, previous studies usually investigated the LRS of mines, transformer substations, and other lands [11,14]. Research focusing on the LRS of BFSY is still unavailable.…”

Decision-Making on Reuse Modes of Abandoned Coal Mine Industrial Sites in Beijing Based on Environment-Economy-Society Matter-Element Models

“…At present, the research on coal mine wasteland mainly involves environmental pollution [1,2], reuse potential [3], reuse decision-making [4][5][6], and reuse benefit evaluation [7]. Related studies reflect the site conditions of coal mine wasteland from multiple perspectives and evaluate the benefits of coal mine wasteland reuse.…”