This paper addressed understanding: how Chinese policies shifted in the Yangtze River Delta by analyzing the differences and transformations between the 2010 and 2019 Yangtze River Delta regional outlines. By using NVIVO, a qualitative research software, the analysis focuses on the new contents of the 2019 outline regarding ecological and environmental policies. Last but not least, it puts forward the progress and shortcomings of the Yangtze River Delta eco-integration policies by summarizing the latest environmental data.

Wu Zitong, Wang Shuyi. Progress and Analysis of the Outline of the Yangtze River Delta Integrated Development: Focusing on the Evolution of Ecological and Environmental Protection Policies. International Journal of Frontiers in Sociology (2023), Vol. 5, Issue 11: 1-11. https://doi.org/10.25236/IJFS.2023.051101.

[1] Guo Yi, Cao Xianzhong, Wei Wendong, et al. The impact of regional integration in the Yangtze River Delta on urban carbon emissions. [J]. Geographical Studies, 2022, 41(01):181-192.

[2] Dong V, Zhang Zenglian, Zhang Fengyuan. Coupling and Coordination of Innovation-Driven and Green Development in the Yangtze River Delta Urban Agglomeration[J]. Research and Development Management, 2023, 35(02):30-43.

[3] Xu Xiaoying & Tian Xinxin. Spatial-temporal Evolution and Trend Prediction of Coupling Coordination among Technology Innovation, Economic Growth and Ecological Environment in Yangtze River Delta Urban Agglomerations [J]. Yangtze River Basin Resources and Environment, 2023, 32(04):706-720.

[4] Li Yixu, Mu Rui, Liu Lanjian, et al. Research on the Cooperation Network of Intergovernmental Environmental Governance from the Perspective of "Structure Characteristics"-Based on the Intergovernmental Agreements Data of the Yangtze River Urban Agglomeration [J]. China Environmental Management, 2023, 15(02):119-129.

[5] Zhao, Simon Xiaobin, Natasha Shu Guo, Chun Lok Kris Li, and Christopher Smith. "Megacities, the world’s largest cities unleashed: major trends and dynamics in contemporary global urban development." World Development 98 (2017): 257-289.

[6] Adamo G. & Willis M. Conceptual Integration for Social-Ecological Systems: An Ontological Approach. In Research Challenges in Information Science: 16th International Conference [J]. Lecture Notes in Business Information Processing, 2022, 446:321-337.

[7] Walter V Reid, Harold Alfred Mooney, et al. Millennium ecosystem assessment, M. E. A. Ecosystems and human well-being: synthesis. Island press, 2005.

[8] Chinese National Development and Reform Commission. China Economic Information Service and China Academy of Urban Planning and Design, Yangtze River Delta Integration Development Index Report, 2022.

[9] Xu Xianxiang, Li Jun. Market integration and coordinated regional development[J]. Economic Research, 2005, 12:57-67.

[10] Paavo Monkkonen et al. Urban sprawl and the growing geographic scale of segregation in Mexico, 1990-2010[J]. Habitat International, 2018, 73: 89-95.

[11] Li Kai et al. An ecological perspective for understanding regional integration based on ecosystem service budgets, bundles, and flows: A case study of the Jinan metropolitan area in China[J]. Journal of environmental management, 2021.

[12] Zimmerer, Karl S. & Thomas J. Bassett. Political ecology: an integrative approach to geography and environment-development studies. Guilford Press, 2003.

[13] Haq Shah Md Atiqul. Urban green spaces and an integrative approach to sustainable environment [J]. Journal of Environmental Protection, 2011, 02(05): 601- 608.

[14] Xi Kaiyuan & Zhu Hong. Practical exploration and dilemma escape of regional ecological integration in Yangtze River Delta[J]. Reform, 2019, 301(03):87-96.

[15] Xu Ming. Ecological Civilization: Playing the Ecological Environment of Yangtze River Delta Integration [J]. Yangtze River Institute of Industrial Economics, 2021.

[16] Fiona Wiltshier. Researching with Nvivo [J]. Forum Qualitative Sozialforschung, 2011, 12(01):1-3.

[17] People's Political Consultative Conference Newspaper, The Yangtze River Delta Regional Ecological Environment Co-Protection Plan, Edition 06B, Ecological Weekly, 2021,13(02.)

[18] Hong Yinxing, Wang Zhen, Zeng Gang, et al. New trends in the integration of the Yangtze River Delta [J]. Shanghai Economy, 2018, 03:122-148.

[19] Zeng, Yingying, Yuanfei Cao, Xue Qiao, Barnabas C. Seyler, and Ya Tang. "Air pollution reduction in China: Recent success but great challenge for the future." Science of the Total Environment 663 (2019): 329-337.