Detailed Explanation:

Answer: Option 3 — Creation of mini forests in urban areas

The Miyawaki method is a unique afforestation technique developed by Japanese botanist Dr. Akira Miyawaki that creates dense, multi-layered native forests in small urban spaces. This method enables the growth of forests 10 times faster, 30 times denser, and with 100 times more biodiversity compared to conventional plantation methods, making it ideal for creating mini forests in urban areas.

📝 Short Notes: Miyawaki Method of Urban Afforestation

• Developer: Dr. Akira Miyawaki, Japanese botanist and professor (since 1980); awarded the Blue Planet Prize in 2006
• Principle: Uses native species of plants in multi-layered plantation to replicate natural forest ecosystems
• Key Features: Grows 10x faster, 30x denser, with 100x more biodiversity than conventional methods
• Area Requirement: Can be implemented in areas as small as 20 square meters
• Success Rate: Over 2,000 forests successfully created worldwide using this method
• Advantages: Works irrespective of soil and climatic conditions; requires minimal maintenance after 2-3 years; improves air quality and urban biodiversity
• Indian Context: Adopted in several Indian cities including Bangalore, Mumbai, Delhi, and Chandigarh for urban greening initiatives