Ecological Restoration Strategies for Mountainous Cities Based on Ecological Security Patterns and Circuit Theory: A Case of Central Urban Areas in Chongqing, China

Lv, Liang; Zhang, Shihao; Zhu, J.; Wang, Ziming; Wang, Zhe; Li, Guoqing; Chen, Yang

doi:10.3390/ijerph192416505

Cited by 11 publications

(7 citation statements)

References 55 publications

(65 reference statements)

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“…where R i is the ecological resistance coefficient of the raster i; NL i refers to the rocky desertification sensitivity index of the raster i; NL α is the average rocky desertification sensitivity of land use type α corresponding to the raster i; R is the resistance factor of the land use type corresponding to the raster i. The MCR model [32] is as follows:…”

Section: Ecological Resistance Surface Correctionmentioning

confidence: 99%

Construction of Karst Landscape Ecological Security Pattern Based on Conflict between Human and Nature in Puzhehei

Li,

Wang,

Liu

et al. 2024

Sustainability

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A key means of promoting the high-quality development of karst areas is the maintenance of the area’s ecological security. A full recognition of the special ecological function of karst areas, as well as their significance to the surrounding region’s ecological, economic, and social development, is crucial in strengthening the overall strategic deployment of the national ecological construction and the protection and sustainable development of karst landscapes around the globe. In this study, the karst landscape of Puzhehei, Qiubei County, Wenshan Prefecture, Yunnan Province, China, was used as the research object. This study identified ecological source sites through a combination of morphological spatial pattern analysis and landscape connectivity assessment. As a result, 10 factors were selected to construct a comprehensive ecological resistance surface from the natural environment and socio-economic perspective; the resistance surface was corrected by combining the sensitivity of rocky desertification. An ecological corridor and ecological nodes were identified to construct the ecological security pattern based on the minimum cumulative resistance model and circuit theory. The results show that (1) the source areas of the Puzhehei karst landscape ecological protection comprised 11 core area patches with the landscape connectivity index of (dPC) ≥ 10, with a total area of 166.6572 km2, which constituted 46.06% of the total study area, and the ecological source area totaled 77.275 km2, or 21.36% of the total study area; (2) there were 78 potential ecological corridors in the Puzhehei karst region, with a total length of 545.186 km, including 12 key corridors and 66 general corridors; (3) a total of 51 ecological nodes were identified, including 11 “source-type ecological nodes”, 30 “ecological pinch points”, and 10 “ecological obstacles”, including 16 key ecological nodes. This study provides a theoretical basis for the integration of Puzhehei Nature Reserve, as well as a reference for the ecologically sustainable development of similar karst areas.

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Section: Ecological Resistance Surface Correctionmentioning

confidence: 99%

Construction of Karst Landscape Ecological Security Pattern Based on Conflict between Human and Nature in Puzhehei

Li,

Wang,

Liu

et al. 2024

Sustainability

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“…Links were considered insufficient if they did not meet the mountain-water landscape pattern in Chongqing. Network D-E was then tested to determine which links were feasible considering urban construction, agricultural development, and the mountain-water landscape pattern [61]. Some corridors in the ecological networks were adjusted from straight lines to curves to circumvent these barriers.…”

Section: Network Delineationmentioning

confidence: 99%

Constructing Ecological Networks Based on Ecosystem Services and Network Analysis in Chongqing, China

Yang,

Yan,

Wang

et al. 2024

Land

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Ecological networks in mountainous regions are vital for enhancing ecosystem functionality and ensuring regional ecological stability, alleviating the contradiction between land use and ecological development in rapid urbanization. However, the complexity of mountains and the need to establish a connection between ecosystem services and human well-being present significant challenges in constructing ecological networks. This study proposes an idea that identifies and derives an optimal scenario for ecological networks, integrating insights from ecosystem services and network analysis. The aim of the ecological network is to improve and protect the ecosystem’s stability while better guiding sustainable development in mountainous regions’ urban and rural areas. This study uses qualitative evaluation methods and a graph theory model to obtain the ecological network’s sources and links. The results indicate that (1) 58 important ecological source areas were identified, with a total area of 5746 km2, mainly covered by woodland and water bodies. (2) An optimal and feasible scenario comprising 5 horizontal and 14 longitudinal corridors was established. Corridors rely primarily on the river system and mountains. (3) A total of 5 key ecological function areas and some ecological zones in important urban development areas were identified. Control measures for these ecological lands were proposed to enhance the effectiveness of ecosystem service construction. It can be concluded that identifying and deriving an optimal scenario of ecological networks in mountainous regions from the perspectives of ecosystem services and network analysis is feasible.

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“…In the construction of ESP, this model is widely applied in determining the paths and landscape patterns of Ecocorridors, which can identify paths with the least cumulative resistance. This study employed the Linkage Mapper toolkit, an extension integrated inside the ArcMap platform, to extract Ecocorridors [50]. This extraction process was based on the MCR model, utilizing circuit theory.…”

Section: Extraction Of Ecocorridorsmentioning

confidence: 99%

Construction of an Ecological Security Pattern in Rapidly Urbanizing Areas Based on Ecosystem Sustainability, Stability, and Integrity

Gong,

Huang,

Lin

2023

Remote Sensing

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The escalating pace of urbanization and human activities presents formidable challenges to landuse patterns and ecological environments. Achieving a harmonious coexistence between humans and nature of high quality has emerged as a global imperative. Constructing an ecological security pattern has become an essential approach to mitigating the adverse ecological impacts of urban sprawl, safeguarding human well-being, and promoting the healthy development of ecosystems. Focusing on ecosystem sustainability, stability, and integrity, this study constructed the ecological security pattern in rapidly urbanizing areas, emphasizing achieving a well-balanced integration of urban expansion and ecological preservation. Ecological sources were identified by an evaluation system of “ecosystem service function–ecological sensitivity–landscape connectivity”. Resistance surfaces were constructed by integrating natural and human factors. Ecological corridors and nodes were extracted by methods such as the minimum cumulative resistance and gravity models. Taking Nanchang City as an example, the results show that there were 15 ecological sources, primarily woodland, displaying a distinct “island” phenomenon. Additionally, there were 41 ecological corridors with a combined length of 2170.54 km, exhibiting a dense distribution in the southwest and a sparse distribution in the northeast. The city was found to encompass 122 ecological nodes, predominantly situated along the corridors near the ecological sources, indicating a strong spatial aggregation pattern. An optimized ecological security pattern of “one ring, two belts, three zones, and multiple nodes” was proposed for synergizing ecological protection, restoration, and rapid urbanizing.

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Ecological Restoration Strategies for Mountainous Cities Based on Ecological Security Patterns and Circuit Theory: A Case of Central Urban Areas in Chongqing, China

Cited by 11 publications

References 55 publications

Construction of Karst Landscape Ecological Security Pattern Based on Conflict between Human and Nature in Puzhehei

Construction of Karst Landscape Ecological Security Pattern Based on Conflict between Human and Nature in Puzhehei

Constructing Ecological Networks Based on Ecosystem Services and Network Analysis in Chongqing, China

Construction of an Ecological Security Pattern in Rapidly Urbanizing Areas Based on Ecosystem Sustainability, Stability, and Integrity

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