urban ecological

8/7/2019 urban ecological

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Urban Ecological Environment


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Scope

Selecting and designating areas of land asnatural reserves

Allocating different land use intensities within a natural reserve

Assessing the magnitude of the impacts onecosystem caused by a proposed development

Recommending most ecologically friendlyland corridor to host a new infrastructure.


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Nature conservation

It can be defined as protection of natural richness of a landscape. (Soil, geomorphology,vegetation, flora, fauna).

Ecological evaluation is the process of assessing the significance of an area for naturalconservation.

Ecological evaluation framework includes themaintenance of natural areas and their biological diversity and maintenance of socialfunctions provided by natural areas.


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Criteria for maintenance of natural areas andtheir biological diversity

Rarity: A measure of how frequently certainspecies or ecosystem types are encountered.

Diversity: A measure of the number of different types of species or habitat types that exist in a given area.

Size: The measure of the extent of area.

Naturalness: The degree to which ecosystemis free from biophysical disturbance caused by human activities.


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Fragility: The degree of sensitivity of speciesor ecosystems to environmental changes. Themore fragile they are, the greater is require

ment for their protection.

Connectivity: A measure of how well the spatial distribution of the natural areas suppor

ts the interaction amongst them.


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maintenance of social functions provided by natural areas

Educational Value

Scientific value

Recreational value


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1. Ecocity planning(1) Urban Ecosystem

Urban Ecosystem consists of people andresources.

Human beings build up a society and createa new form of nature. They use a lot of

resources and energy to produce goods and,consequently, generate wastes.


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Urban Ecosystem Properties

- Climate

- Mass Balance

- Buildings

- Life Habitat

1. Ecocity planning(1) Urban Ecosystem


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Natural environment is the main concern ofecocity planning, particularly the effort toreconstruct human being's society.

Background

1. Environmental problems have been identified

2. International movement for lasting development

3. Using technology resources and energy4. Development of nature demobilization technology

1. Ecocity Planning(2) The concept of Ecocity planning


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Consider cities as an organism

Making various activities and structure inthe city considers the natures diversity,independence, circulation and safety

A city that people and nature coexist

1. Ecocity planning(3) Definition of Ecocity


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Goals of ecological urban planning

1. Saving energy (economize oil, electricity, etc.)

2. Urban planting for water permeability

3. Solving the problem of urban desertificationand water permeability

*Almost all public buildings were already implementing the ecological urban plan

1. Ecocity planning


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Open space

- Special entertainment place created for

the public

- Urban planning facilities to produce a

pleasant environment

- Publicity at urban exterior zone

2. Functions of Open Space to cities(1) The Concept of Open Space


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Classification According to Function

- Childrens parks

- Vicinity parks- Urban natural parks

- Cemetery parks

- Sports parks

2. Functions of Open Space to cities(2) Classification of Open Space


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Classification According to Zone

- Green buffer zone : prevents air and noisepollution, accidents and disasters

- Green view zone : conserves urban naturalenvironment and develop it to create an urban

scenery

2. Functions of Open Space to cities(2) Classification of Open Space


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2. Functions of Open Space to cities(2) Creating Urban Open space

Properties Degree of Green Naturality

1 2 3 4 5 6 7 8 910

Nature as a generalmeaning

lowhigh

Sensibilities on humaninterference

weakstrong

Restoration ability afterbeing destroyed

fastslow

Biological Diversity simplevarious

Natural resources littleplenty

Development possibility highlow

Degree of Green Naturality


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Tree planting throughout rural and urban area

3. Urban Planting(2) Tree Planting

Planting inresidence area

Building landscape

Planting in public

building (School)

Creating small parks

creating buffer zone in residence area

Landscape for public residence and buildings

Planting in front of buildings

Planting in rooftop of buildings

planting around playgrounds

planting in station buildings

planting on public offices fences


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< Creating buffer zone in residence area > < Planting in rooftop of buildings>


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< planting on public offices fences > < planting around playgrounds >


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3.Urban Planting(3) Creation of Urban Green Belt

Roadside Planting

- road development going to airport

- creating greened streets for pedestrians- creating a waterscape with natural valley

water

- Planting on urban building walls

Planting around rivers and railroads


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3. Urban Planting(3) Urban Green Belts

< Planting around rivers and railroads >


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4. Ecological Environment Restorationand Re-vegetation Technology

Restore vegetation regardless of areas

(dam, soil, steep slope, etc.) andseasons (flood, dry, cold)


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Effects

- Land Preservation

- Development of natural environment

- Making people comfortable with a well

landscaped area

- Bio tope (balanced habitat)



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Objectives

- Natural restoration

- Creating and restoring natural communitiesthrough planting seeds

- Restoring Communities with natural methods

- Using plenty and various species

- Creating a harmonious vegetation



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Classification of Harmonious Vegetation

1. Harmonious vegetation based on physiologyand ecosystem

2. Harmonious vegetation based on function

3. Harmonious vegetation based on landscape

4. Ecological Environment Restorationand Revegetation Technology


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Planting along hillside roads

- There are cut-slopes due to road construction

that serve as ecotone*

Road construction should be conducted not to destroy a large partof vegetation communities and change configuration of ground.

*the transition zone between two different plant communities(ex. zone between forest and prairie)



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Planting on Road Cut-slopes

Shrubbery

Herbage and Shrubbery

Herbageand Ivy


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Thank You

Documents

urban ecological