Ecological sensitivity and its driving factors in the area along the Sichuan–Tibet Railway

Chen, Yang; Zhang, Tingbin; Zhou, Xiaobing; Li, Jingji; Yi, Guihua; Bie, Xiaojuan; Hu, Jiao; Wen, Bo

doi:10.1007/s10668-023-03462-z

Cited by 3 publications

(1 citation statement)

References 59 publications

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“…According to the current research status of railway alignment design in the southwestern mountainous areas, most of the existing achievements focus on "terrain route selection", "geological route selection", and "disaster reduction route selection" as the core design concepts, with a focus on engineering safety risks. For issues such as the ecological environment and protecting biodiversity along railway lines, research has focused primarily on the ecological environmental impact and ecological sensitivity evaluation induced by route selection [2,10,11]. There is limited theoretical and in-depth research on the interaction between alignment design and the resource environment [12,13].…”

Section: Literature Reviewmentioning

confidence: 99%

The Coupling Mechanism between Railway Alignment Design and Resource Environment in the Southwestern Mountainous Areas of China

Wan,

Bao,

2024

Sustainability

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Faced with the characteristics of multifactor coupling and interweaving along the railway lines in the southwestern mountainous areas of China, researching the coupling mechanism and optimizing the collaborative development path between alignment designs and the resource environment is conducive to promoting the green and sustainable development of railways in these southwestern mountainous areas. In this study, first, regarding the environmental characteristics of engineering along the railway lines in the southwestern mountainous area, the key elements of the interaction and coercion between the alignment design (internal system) and the resource environment (external system) are identified, and the interactive impact mechanism of the “alignment design–resource environment” complex is revealed. Accordingly, a nonlinear coupling mechanism between the alignment design system and the resource environment system is established using the deviation coefficient coupling degree model. Second, from a methodological perspective, following a technical path of “analyzing the coercive effects of internal and external factors–identifying coupling relationships–discovering coupling laws–screening driving factors–proposing optimization plans–achieving collaborative development goals”, we propose an overall optimization plan to solve the problem. Finally, the Chengdu Changdu section of the X railway, which is located in a southwestern mountainous area, is taken as an example for this study. The results indicate that if the state of the external system of the KL scheme is continuously improved through the regulation of the u22 (crossing the ecological protection red line length), u23 (biodiversity impact), and u24 (ecosystem impact) indicators and that the internal structure of the line design is improved by optimizing the l12 (total length of bridges and tunnels) and l13 (number of stations) indicators, effectively driving the improvement in the u31 (land resource occupation) and u43 (land development intensity) indicators, the alignment design and resource environment will exhibit a mutually reinforcing coupling evolution trend and ultimately achieve an “alignment design–resource environment” composite system with higher quality coupling.

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Section: Literature Reviewmentioning

confidence: 99%

The Coupling Mechanism between Railway Alignment Design and Resource Environment in the Southwestern Mountainous Areas of China

Wan,

Bao,

2024

Sustainability

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Multi-parameters monitoring of geological disasters around the Taihang Mountains-Yanshan area, Hebei Province

Wu,

Yu,

et al. 2024

Geomatics, Natural Hazards and Risk

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Dynamic Integrated Ecological Assessment along the Corridor of the Sichuan–Tibet Railway

Ji,

Yang,

Pei

et al. 2024

Land

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Engineering activities along the Sichuan–Tibet Railway (STR) could cause land degradation and threaten the surrounding ecological security. It is crucial to evaluate the integrated land ecology during and after the construction of this project. This study assesses the land ecology along the STR corridor from 2000 to 2022 using a transfer matrix, the analytic hierarchy process (AHP), and the PSR-TOPSIS model. The main results are as follows: (1) The novel comprehensive ecological assessment process including nine indicators is feasible. (2) The high-quality land ecological, surface vegetation, and environmental regions were concentrated in Ya’an and Nyingchi, whereas the low-quality regions were situated in Qamdo and Garze Tibetan Autonomous Prefecture. (3) There was an overall decline in the integrated land ecological quality along the STR from 2000 to 2022. While it steadily improved in the Ya’an and Nyingchi regions from 2010 to 2022, it continued to decline around the Qamdo region. (4) The most degraded land-use type during the 22 years was grassland, and farmland was the most secure land-use type. Overall, spatial analyses and examinations of residue disposal sites suggested that these locations have negatively impacted integrated land ecology since the beginning of the STR construction project. Our findings have implications for preserving the ecological ecosystem and ensuring the sustainability of the STR construction project.

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Ecological sensitivity and its driving factors in the area along the Sichuan–Tibet Railway

Cited by 3 publications

References 59 publications

The Coupling Mechanism between Railway Alignment Design and Resource Environment in the Southwestern Mountainous Areas of China

The Coupling Mechanism between Railway Alignment Design and Resource Environment in the Southwestern Mountainous Areas of China

Multi-parameters monitoring of geological disasters around the Taihang Mountains-Yanshan area, Hebei Province

Dynamic Integrated Ecological Assessment along the Corridor of the Sichuan–Tibet Railway

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