The "Miyawaki method" is well known for the:

Updated 11 Apr 2026 · From UPSC Prelims GS Paper I 2022, Q77

Contents14
UPSC Prelims GS2022Environment
  1. APromotion of commercial farming in arid and semi-arid areas
  2. BDevelopment of gardens using genetically modified flora
  3. CCreation of mini forests in urban areas
  4. DHarvesting wind energy on coastal areas and on sea surfaces.
Show answer

Answer: (C) Creation of mini forests in urban areas

The answer is (C) Creation of mini forests in urban areas.

The Miyawaki method, developed by Japanese botanist Akira Miyawaki in the 1980s, creates dense mini-forests in cities:

How it works:

  1. Plant many NATIVE species very close together
  2. Mix all forest layers — shrubs, small trees, tall trees — on a small plot
  3. Plants compete for sunlight, so they grow UPWARD (not sideways)
  4. Result: A forest that's 30x denser, grows 10x faster, and becomes self-sustaining (no maintenance needed) after just 3 years

Why it's popular for cities: You can create a mini-forest on a plot as small as a parking space! It improves air quality, reduces urban heat, supports biodiversity, and provides green spaces.

The other options have nothing to do with Miyawaki:

  • (A) is about farming
  • (B) is about GMOs
  • (D) is about wind energy.
Why this was asked

The Miyawaki method creates dense, fast-growing mini forests by planting native species very close together in urban spaces as small as parking lots.

Urban afforestation became a major policy focus around 2020-22, with cities like Delhi and Bengaluru adopting Miyawaki forests to combat air pollution and urban heat islands.

UPSC is testing whether students can distinguish between different environmental solutions - afforestation vs farming vs genetic modification vs renewable energy.

Miyawaki Method

Environment Miyawaki method mini forests

Miyawaki Method: Creating Dense Urban Mini-Forests

Must know

Miyawaki method creates dense mini-forests in urban areas using native species

Forests grow 10x faster and are 30x denser than conventional plantations

Becomes self-sustaining after just 3 years with no maintenance

Good to know

Developed by Japanese botanist Akira Miyawaki in the 1980s

What It Is

The Miyawaki method is a revolutionary urban forestry technique that creates dense, native forests in extremely small spaces. Unlike traditional tree planting, this method can transform even a parking space-sized plot into a thriving forest ecosystem.

How It Works

%%{init: {"flowchart": {"wrappingWidth": 460}}}%%
flowchart TD
  s1["`**Site Selection**
Choose small urban plot (minimum 20 sq meters)`"]
  s2["`**Native Species Research**
Identify indigenous trees, shrubs, and ground cover of the region`"]
  s3["`**Dense Multi-Layer Planting**
Plant all forest layers together - tall trees, medium trees, shrubs - very close to each other`"]
  s4["`**Competition for Light**
Plants compete for sunlight, forcing rapid vertical growth instead of horizontal spread`"]
  s5["`**Self-Sustaining Forest**
After 3 years, forest maintains itself with no human intervention`"]
  s1 --> s2
  s2 --> s3
  s3 --> s4
  s4 --> s5

Miyawaki vs Traditional Forestry

Aspect

Miyawaki Method

Traditional Plantation

Species Used

Native species only

Often exotic/commercial species

Planting Density

3-5 plants per sq meter

1 plant per 4-9 sq meters

Growth Rate

10x faster

Normal growth

Forest Density

30x denser

Standard density

Maintenance Period

3 years only

10-20 years continuous

Space Requirement

20 sq meters minimum

Large areas needed

Survival Rate

90%+

60-70%

Urban Applications

Air quality improvement - Dense vegetation filters more pollutants than sparse trees

Urban heat island reduction - Creates cooling effect in concrete-dominated cities

Biodiversity support - Native plants attract local birds, insects, and small animals

Noise reduction - Dense forest acts as natural sound barrier

Carbon sequestration - Rapid growth means faster CO₂ absorption

Miyawaki Forest Structure

Multi-layer dense planting forces vertical growth through light competition
Multi-layer dense planting forces vertical growth through light competition

Source: SUGi Project — Why We Use the Miyawaki Method | SUGi · www.sugiproject.com

Exam traps

Not for commercial farming - The method is for creating natural forests, not agricultural production

Only uses native species - No genetically modified plants or exotic species are used

Urban focus - Specifically designed for cities and small spaces, not large rural areas

No connection to wind energy - This is purely a forestry technique, not renewable energy

Urban Forestry in India

Environment

Urban Forestry Initiatives in India

Must know

India's urban forest cover is only 2.6% compared to 21.7% national average

Miyawaki forests implemented in Delhi, Mumbai, Bengaluru, and other cities

Good to know

Part of Smart Cities Mission and National Action Plan on Climate Change

Urban Green Challenge

Indian cities face severe air pollution and urban heat island effects due to rapid urbanization. With over 35% of India's population living in cities, urban forestry has become critical for sustainable development and climate resilience.

Miyawaki Projects in Indian Cities

City

Location

Area

Key Features

Delhi

Rajghat, Central Ridge

Multiple sites

Air pollution reduction focus

Mumbai

Sanjay Gandhi National Park buffer

10+ locations

Mangrove integration

Bengaluru

Cubbon Park, Lalbagh periphery

Various plots

IT sector partnership

Chennai

Pallikaranai wetland area

5+ sites

Coastal ecosystem restoration

Chandigarh

Sector parks

Multiple mini-forests

Model city demonstration

Policy Support

Forest Policy 2019 promotes urban forests and green corridors in cities

Compensatory Afforestation Fund can be used for urban forestry projects

Green Building norms under IGBC encourage Miyawaki forests in commercial complexes

State Forest Departments partnering with municipal corporations for implementation

Urban Forest Coverage

Map of India showing urban forest cover percentage in major cities with color coding for different coverage levels

Most Indian cities have less than 5% forest cover, making urban forestry initiatives crucial

Other Urban Green Solutions

Environment commercial farming genetically modified flora wind energy

Alternative Urban Environmental Solutions

Must know

Vertical farming uses controlled environments for commercial crop production in cities

Good to know

Rooftop gardens with native and food plants provide green cover and urban farming

Urban wind energy installations on buildings and coastal areas generate renewable power

Urban Green Solutions Comparison

Method

Primary Purpose

Space Requirement

Technology Level

Miyawaki Forests

Ecosystem restoration, air quality

Small plots (20+ sq m)

Low-tech, natural

Vertical Farming

Commercial food production

Indoor facilities

High-tech, controlled

Rooftop Gardens

Food security, green cover

Building rooftops

Medium-tech

Urban Wind Farms

Renewable energy generation

Open spaces, coastlines

High-tech

Hydroponic Systems

Soilless cultivation

Indoor/greenhouse

High-tech, water-based

Integrated Approach

Complementary solutions - Cities can combine Miyawaki forests with rooftop gardens and renewable energy

Different objectives - Forest restoration (Miyawaki) vs food production (vertical farms) vs energy (wind/solar)

Space optimization - Each method suits different urban spaces and land use patterns

Exam traps

Don't confuse purposes - Miyawaki is for forest creation, not commercial farming or energy generation

Genetically modified plants are not part of Miyawaki method - only native species are used

Wind energy harvesting is unrelated to urban forestry techniques