Biodiversity and national ecological network

2017 ◽  
pp. 201-214
Keyword(s):  
Ecological Network

Specialization and Modularity of a Bat Fly Antagonistic Ecological Network in a Dry Tropical Forest in Northern Colombia

2019 ◽  
Vol 20 (2) ◽  
pp. 503 ◽  
Author(s):  
Adrián A. Durán ◽  
Romeo A. Saldaña-Vázquez ◽  
Gustavo Graciolli ◽  
Laura C. Peinado
Keyword(s):  
Tropical Forest ◽  
Ecological Network ◽  
Dry Tropical Forest ◽  
Bat Fly

scholarly journals Ecological Network Optimization in Urban Central District Based on Complex Network Theory: A Case Study with the Urban Central District of Harbin

2021 ◽  
Vol 18 (4) ◽  
pp. 1427
Author(s):  
Shuang Song ◽  
Dawei Xu ◽  
Shanshan Hu ◽  
Mengxi Shi
Keyword(s):  
Complex Network ◽  
Network Optimization ◽  
Network Theory ◽  
Habitat Destruction ◽  
Landscape Patterns ◽  
Ecological Network ◽  
Complex Network Theory ◽  
Ecological Corridors ◽  
Low Degree ◽  
Central District

Habitat destruction and declining ecosystem service levels caused by urban expansion have led to increased ecological risks in cities, and ecological network optimization has become the main way to resolve this contradiction. Here, we used landscape patterns, meteorological and hydrological data as data sources, applied the complex network theory, landscape ecology, and spatial analysis technology, a quantitative analysis of the current state of landscape pattern characteristics in the central district of Harbin was conducted. The minimum cumulative resistance was used to extract the ecological network of the study area. Optimized the ecological network by edge-adding of the complex network theory, compared the optimizing effects of different edge-adding strategies by using robustness analysis, and put forward an effective way to optimize the ecological network of the study area. The results demonstrate that: The ecological patches of Daowai, Xiangfang, Nangang, and other old districts in the study area are small in size, fewer in number, strongly fragmented, with a single external morphology, and high internal porosity. While the ecological patches in the new districts of Songbei, Hulan, and Acheng have a relatively good foundation. And ecological network connectivity in the study area is generally poor, the ecological corridors are relatively sparse and scattered, the connections between various ecological sources of the corridors are not close. Comparing different edge-adding strategies of complex network theory, the low-degree-first strategy has the most outstanding performance in the robustness test. The low-degree-first strategy was used to optimize the ecological network of the study area, 43 ecological corridors are added. After the optimization, the large and the small ecological corridors are evenly distributed to form a complete network, the optimized ecological network will be significantly more connected, resilient, and resistant to interference, the ecological flow transmission will be more efficient.

scholarly journals Construction of a Landscape Ecological Network for a Large-Scale Energy and Chemical Industrial Base: A Case Study of Ningdong, China

Land ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 344
Author(s):  
Haochen Yu ◽  
Jiu Huang ◽  
Chuning Ji ◽  
Zi’ao Li
Keyword(s):  
Ecological Restoration ◽  
Large Scale ◽  
Ecological Environment ◽  
Ecological Network ◽  
High Importance ◽  
Fractional Coverage ◽  
Industrial Base ◽  
Ecological Corridors ◽  
Vegetation Fractional Coverage

A large-scale energy and chemical industry base is an important step in the promotion of the integrated and coordinated development of coal and its downstream coal-based industry. A number of large-scale energy and chemical industrial bases have been built in the Yellow River Basin that rely on its rich coal resources. However, the ecological environment is fragile in this region. Once the eco-environment is destroyed, the wildlife would lose its habitat. Therefore, this area has attracted wide attention regarding the development of the coal-based industry while also protecting the ecological environment. An ecological network could improve landscape connectivity and provide ideas for ecological restoration. This study took the Ningdong Energy and Chemical Industrial Base as a case study. Morphological spatial pattern analysis was applied to extract core patches. The connectivity of the core patches was evaluated, and then the ecological source patches were recognized. The minimum cumulative resistance model, hydrologic analysis and circuit theory were used to simulate the ecological network. Then, ecological corridors and ecological nodes were classified. The results were as follows: (1) The vegetation fractional coverage has recently been significantly improved. The area of core patches was 22,433.30 ha. In addition, 18 patches were extracted as source patches, with a total area of 9455.88 ha; (2) Fifty-eight potential ecological corridors were simulated. In addition, it was difficult to form a natural ecological corridor because of the area’s great resistance. Moreover, the connectivity was poor between the east and west; (3) A total of 52 potential ecological nodes were simulated and classified. The high-importance nodes were concentrated in the western grassland and Gobi Desert. This analysis indicated that restoration would be conducive to the ecological landscape in this area. Furthermore, five nodes with high importance but low vegetation fractional coverage should be given priority in later construction. In summary, optimizing the ecological network to achieve ecological restoration was suggested in the study area. The severe eco-environmental challenges urgently need more appropriate policy guidance in the large energy and chemical bases. Thus, the ecological restoration and ecological network construction should be combined, the effectiveness of ecological restoration could be effectively achieved, and the cost could also be reduced.

The Northeast U.S. continental shelf Energy Modeling and Analysis exercise (EMAX): Ecological network model development and basic ecosystem metrics

2008 ◽  
Vol 74 (1-2) ◽  
pp. 453-474 ◽  
Author(s):  
Jason Link ◽  
William Overholtz ◽  
John O'Reilly ◽  
Jack Green ◽  
David Dow ◽  
...  
Keyword(s):  
Continental Shelf ◽  
Network Model ◽  
Model Development ◽  
Energy Modeling ◽  
Ecological Network ◽  
Shelf Energy ◽  
Modeling And Analysis

A social–ecological network analysis of Argentinean Andes transhumant pastoralism

2016 ◽  
Vol 16 (8) ◽  
pp. 2243-2252 ◽  
Author(s):  
Marcos Horacio Easdale ◽  
Martín Roberto Aguiar ◽  
Raúl Paz
Keyword(s):  
Network Analysis ◽  
Ecological Network ◽  
Ecological Network Analysis ◽  
Social Ecological ◽  
Transhumant Pastoralism

Potential contributions of green spaces at business sites to the ecological network in an urban agglomeration: The case of the Ile-de-France region, France

2014 ◽  
Vol 131 ◽  
pp. 27-35 ◽  
Author(s):  
Hortense Serret ◽  
Richard Raymond ◽  
Jean-Christophe Foltête ◽  
Philippe Clergeau ◽  
Laurent Simon ◽  
...  
Keyword(s):  
Urban Agglomeration ◽  
Green Spaces ◽  
Ecological Network

Evaluation of the policy-driven ecological network in the Three-North Shelterbelt region of China

2022 ◽  
Vol 218 ◽  
pp. 104305
Author(s):  
Haowei Mu ◽  
Xuecao Li ◽  
Haijiao Ma ◽  
Xiaoping Du ◽  
Jianxi Huang ◽  
...  
Keyword(s):  
Ecological Network
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