[Extending study on energy indices for sustainable development].

Area of Science:

• Ecological Engineering
• Sustainable Development
• Environmental Science

Context:

• Current international Energy Sustainable Index (ESI) has deficiencies in holistic analysis.
• Ecological engineering models, like China's Pearl River Delta dike-pond systems, require robust sustainability assessment.
• Integrated analysis of energy, economic, and matter flows is crucial for understanding complex systems.

Purpose:

• To introduce a new Sustainable Development Index (SDI) that overcomes the limitations of existing indices.
• To integrate energy, economic, and matter analyses into a single assessment framework.
• To evaluate the sustainability of ecological engineering models using the proposed SDI.

Summary:

• The study proposes a new Sustainable Development Index (SDI) by analyzing deficiencies in the current Energy Sustainable Index (ESI).
• A case study was conducted on three dike-pond models in the Pearl River Delta, a renowned Chinese ecological engineering model.
• The results demonstrate that the SDI provides a more rounded evaluation of a system's sustainable development capacity, simultaneously tracking energy, money, and matter flows.

Impact:

• The new SDI offers a more comprehensive evaluation of system sustainability.
• It visualizes energy, money, and matter flows, enabling a multi-faceted understanding of system dynamics.
• The index provides constructive, multi-sided optimization advice for improving sustainability.