An Analysis of Policy Transmission Flow in the Chengdu Plain Urban Agglomeration in Southwest China: Towards Building an Ecological Protection Network
Abstract
:1. Introduction
2. Literature Review
3. Data and Methods
3.1. Study Area and Data Sources
3.1.1. Study Area
3.1.2. Data Sources
3.2. Methodology
3.2.1. Policy Transmission Flow Model
3.2.2. Social Network Analysis
- (1)
- Network density: Network density is used to reflect the level of network completeness in a region and the degree of spatial interaction among individual nodes within the network [44]. A higher network density indicates a stronger connection among network members and a more complete urban network. The calculation formula is as follows:
- (2)
- Cohesive subgroups: Cohesive subgroups are a descriptive study of social structures that can reveal the actual or potential relationships or substructures among actors in a social network [45]. When there are close connections among cities within an urban cluster, a secondary cohesive subgroup can form. The presence of cohesive subgroups in a network indicates tight information exchange and transmission among cities within the subgroup.
- (3)
- Degree centrality: Network centrality can be measured in three forms: degree centrality, betweenness centrality, and closeness centrality [46]. These measures reflect the status and influence of city nodes within the network. Degree centrality refers to the comprehensive connectivity of a node in the network. If a node is connected to multiple nodes, it has a higher degree centrality, which effectively represents the city’s communicative capacity in the region [47]. The calculation formula is as follows:
- (4)
- Centrality model: The centrality model of core–periphery structure is capable of measuring the centrality of cities, thereby assessing their level of power within the network. Core cities are situated at the top of the hierarchy, exerting dominant control over the flow of regional resources and playing a leading role in regional development [48]. Periphery cities, on the other hand, are located at the lower end of the hierarchy, possessing the resource elements that core cities require and engaging in resource exchange with them [49].
4. Results
4.1. Analysis of Ecological Protection Network Characteristics
4.1.1. Analysis of the Characteristics of the Integrated Ecological Protection Network
4.1.2. Analysis of Categorized Ecological Protection Network Characteristics
4.2. Ecological Protection Network Point-Degree Centrality Analysis
4.2.1. Point-Degree Centrality Analysis of the Integrated Ecological Protection Network
4.2.2. Point-Degree Centrality Analysis of Classified Ecological Protection Networks
4.3. Analysis of Cohesive Subgroups
4.4. Core–Periphery Structure Analysis
5. Discussion and Conclusions
- Strengthen the construction of the ecological protection network and enhance regional cooperative governance capabilities. Governments and relevant institutions should enhance the formulation and implementation of ecological protection policies, ensuring a smooth transmission and execution of policies between cities, promoting resource sharing and information exchange among cities, thereby improving the overall level of regional ecological protection.
- Improve the execution and effectiveness of ecological protection policies. Local governments should strengthen their execution capabilities, clearly define responsibilities, and improve the efficiency and effectiveness of policy implementation.
- Promote diversified cooperation and establish cross-regional ecological protection coordination mechanisms. Actively promote cooperation between cities, build cross-regional ecological protection coordination mechanisms, and enhance coordination and cooperation among cities in ecological protection.
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Serial Number | Policy Name | Time | First-Level Type | Secondary Type | File Source |
---|---|---|---|---|---|
1 | Notice on Delineating High Polluting Fuel Burning Ban Zones | 14 January 2015 | Regulation service | Gas regulation | [34] |
2 | Notice on Restricted Areas and Time Periods for High Pollution Vehicles | 7 July 2015 | Regulation service | Gas regulation | [35] |
100 | Interim Measures for the Rapid Response Management of Environmental Quality “Measurement and Management Collaboration” in Mianyang City | 18 May 2017 | Comprehensive service | Comprehensive service | [36] |
101 | Implementation Plan for the Construction of Hazardous Waste Centralized Disposal Facilities in Mianyang City (2017–2022) | 4 December 2017 | Regulation service | Environment purification | [37] |
270 | Notice on Issuing the Administrative Interview Measures for Ecological Environment Protection in Ziyang City | 15 October 2022 | Comprehensive service | Comprehensive service | [38] |
350 | The 13th Five Year Plan for Forestry Development in Ya’an City | 31 October 2016 | Comprehensive service | Comprehensive service | [39] |
401 | Notice on Issuing the “14th Five Year Plan for Water Safety Guarantee in Ya’an City” | 12 February 2022 | Regulation service | Hydrological regulation | [40] |
City | Chengdu | Deyang | Leshan | Meishan | Mianyang | Suining | Ya’an | Ziyang |
---|---|---|---|---|---|---|---|---|
Chengdu | 0 | 52 | 43 | 52 | 43 | 52 | 52 | 43 |
Deyang | 41 | 0 | 41 | 49 | 39 | 49 | 49 | 41 |
Leshan | 41 | 49 | 0 | 49 | 41 | 49 | 49 | 41 |
Meishan | 23 | 26 | 23 | 0 | 22 | 26 | 26 | 23 |
Mianyang | 39 | 49 | 39 | 49 | 0 | 49 | 49 | 39 |
Suining | 69 | 85 | 69 | 85 | 67 | 0 | 85 | 69 |
Ya’an | 64 | 73 | 64 | 74 | 61 | 73 | 0 | 64 |
Ziyang | 42 | 49 | 42 | 49 | 42 | 49 | 49 | 0 |
City | Chengdu | Deyang | Leshan | Meishan | Mianyang | Suining | Ya’an | Ziyang |
---|---|---|---|---|---|---|---|---|
Chengdu | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
Deyang | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 |
Leshan | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
Meishan | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
Mianyang | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
Suining | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
Ya’an | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 |
Ziyang | 0 | 1 | 0 | 1 | 0 | 1 | 1 | 0 |
Type 1 | Types of Ecological Protection Networks | Network Density |
---|---|---|
Supply Service | Grain production | 21.43% |
Water supply | 26.79% | |
Regulation Service | Gas regulation | 35.71% |
Climate regulation | 53.57% | |
Environment purification | 35.71% | |
Hydrological regulation | 39.29% | |
Support Service | Soil erosion control | 37.50% |
Cultural Service | Providing of aesthetic landscape | 32.14% |
Comprehensive Service | Comprehensive service | 58.93% |
Network Type | Core City | City on the Edge |
---|---|---|
Grain production | Cheng, De, Mian, Zi | Le, Sui, Ya, Mei |
Water supply | Cheng, De, Le, Ya | Mei, Sui, Mian, Zi |
Gas regulation | Cheng, De, Mian, Le, Sui | Mei, Ya, Zi |
Climate regulation | Cheng, De, Le, Mei, Mian, Sui, Ya | Zi |
Environment purification | Cheng, Sui, Le, Mian | Mei, De, Ya, Zi |
Hydrological regulation | Mian, Mei, Le | De, Cheng, Sui, Ya, Zi |
Soil erosion control | Cheng, Sui, Le | Mei, Mian, De, Ya, Zi |
Providing of aesthetic landscape | Cheng, Mei, Ya, Mian | De, Sui, Le, Zi |
Comprehensive service | Cheng, De, Ya, Sui | Mian, Mei, Le, Zi |
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Hou, L.; Deng, Y.; Wang, X.; Liu, T.; Xu, Y.; Wang, J. An Analysis of Policy Transmission Flow in the Chengdu Plain Urban Agglomeration in Southwest China: Towards Building an Ecological Protection Network. Sustainability 2024, 16, 5398. https://doi.org/10.3390/su16135398
Hou L, Deng Y, Wang X, Liu T, Xu Y, Wang J. An Analysis of Policy Transmission Flow in the Chengdu Plain Urban Agglomeration in Southwest China: Towards Building an Ecological Protection Network. Sustainability. 2024; 16(13):5398. https://doi.org/10.3390/su16135398
Chicago/Turabian StyleHou, Langong, Yingjia Deng, Xiaolan Wang, Tao Liu, Yuanhang Xu, and Jing Wang. 2024. "An Analysis of Policy Transmission Flow in the Chengdu Plain Urban Agglomeration in Southwest China: Towards Building an Ecological Protection Network" Sustainability 16, no. 13: 5398. https://doi.org/10.3390/su16135398