Messages from Departments and Centers of NILIM

Low Carbon Town Development With Multifaceted
SupportSHIBATA Yoshiyuki
Director of Urban Planning Department(Keywords) Future image assessment, Land suitability, Area-wide energy usage, Urban heat island countermeasures
1.Introduction“Promotion of Urban Low-carbonization Act” being④ Formulation of efficient energy system throughsuch as cogeneration and sharing of heat systems in

implemented last December, Urban low carbonization isdistrict and town level.

a part of the efforts to reduce CO2 emissions, and also,
the promotion contributing to development of healthy⑤ Moderation of heat-island phenomenon, byimprovement of ground level green coverage, andurban environment.

securing of “ventilation paths”.

Therefore it is necessary for the central government to

3. Tools to support Low Carbon Town Development

support comprehensive efforts by local governments,(1) Urban and regional future image assessment tool

private companies and citizens for creating andRegarding the future urban structure, several alternative

implementing

proposals composed of planning measure packages such“LowCarbonTownDevelopment

Plan“ of the municipalities .

as, urban area expansion types, multicore concentration

In our Urban Planning Department, we have beentypes and so on have been set, and reasonable selection

engaged in developing tools for years, supporting efforts

is possible by assessing objectively and quantitatively

ofQOL, environment and cost in a comparable fashion.

municipalities

regarding

low-carbon

town

development. The characteristic of the tools and theImprovement of practicality has now been addressedsituation in which the tools can be used will bethrough case studies with public entities. It is expected to

introduced here.

use when a big directional movement is considered

Related research achievements shall gradually be

regarding consolidation of urban function including

announced, but if anyone is interested in the practical use

visions about a set of area that is a base of city andof the tools along with the studies, inquiries will becooperation with public transportation facility in thewelcome and responded to individually.

development phase of low carbon town development
plan draft. Also, it is thought that alternative proposals

2. Low Carbon Town Development as a target of urban

such as placement of various citizen service functions

research fields

and segregation of duties between bases are weighed if

The Urban Planning Department has carried out

several base areas are set.

research that give importance to the following related(2)Land suitability assessment technology towards

challenges related to the goals stated in Low Carbon City

strategic land management

Development Guidance established by the relevant

Traditionally, various condition data that the land has isminister.

accumulated by city planning basic survey. Converting it① Reduction of energy consumption by consolidationof city functions and promotion of public transportation

to metrics in mesh unit, assessment point of land

usage.

land items such as building use, agriculture and forestry② Consolidation of necessary city functions for daily
life to nearby neighborhood.

use and so on. It is used as information for making a③ Reduction of financial costs by efficiency andprioritization of urban infrastructure maintenance andresearch has been continued towards coordination ofrenewal.

is thought that it will be useful to consider challenges

suitability is calculated by setting weighting of index bydecision on land use and priority of maintenance. The
next fiscal year. In the planning process, for example, itMessages from Departments and Centers of NILIM
such as abstraction of inefficient area of urban

measure, establishment of assessment index (conversion

infrastructure improvement and management due to theto CO2 reduction) regarding heat island countermeasures.

increase of vacant houses, various disaster hazards

After the plan formulation, negotiations will proceed to

information and strengthening of collaboration with land

make high CO2 reduction by using the assessment toolsuse.

regarding development work in the target area of(3)Proper area consideration flow for the adaptation ofmeasure. In this case, it is possible to analyze impact toheat energy face use

the environment in detail using an assessment tool

To proceed efficiently area-wide energy usage that

(Detailed version) that is prepared separately.

contributes to the low carbon town development, processof derivation of development work such as proper area(6)Standardization of the urban environment climatic

selection of area-wide energy usage in local publicchart

entities are organized. It is assumed to aggressively

To methodically present as a guideline (draft) ofadopt area-wide energy usage by extracting high aptitude

procedurearea of area-wide energy usage adaption such as an areamap”, ”Advice map”, ”Effect map” as an urbanthat has high floor-area ratio or is close to unused energy

heat-island countermeasure map to be able to try ansources, setting up action area, directing and supporting

efficient measure that fits area characteristic including

heat provider businesses in the areas. Also even if it isuse of “Kaze-no-Michi(Ventilation Path)”. Regarding

outside of the area, it is thought that to direct individual

the method of announcement, it is being coordinated. In

buildings by establishing requirements of public

the plan formulation phase, making “Current state map”

assistance and presenting support measure in advanceand “Advice map” is important, and after the plan

regardingformulation, “Effect map” will be created based onheattransferring

amongbuildings

oradaptation of DHC.

ofmeasure

that

has

“Current

minute consideration that responds to business plans, and(4)Heat energy network system simple efficiency
assessment programby proceeding negotiations, the effect will ideally behigh.

A program was developed that could approximate the4. Future challenge

amountExcept those tools that were introduced above,ofheatingstate

necessary

persquare

meter

categorized by land use by entering the distance of heat
flexibility plumbing and selection of heat system. Use of・Smooth procedure of degeneracy of city that responds
to progress of population decrease.

to maximize the efficiency of heating systems in the・Research, analysis, assessment measure of green inurban space that responds to upgrading of aviation laserarea.

measurement.

Also, after the project formulation, a planner can suggest
using the assessment program to people related to・ Assessment measure of area and city facility byaccessibility index.

business in the action area for heat transferring among

Research that have been addressed.

buildings or other systems to get a higher energy saving

Integrated measure development of consolidation of cityeffect.

function and promotion of public transportation facility,(5) Assessment tool of CO2 emissions reduction of

restructuring of daily living area around public

urban heat-island countermeasurestransportation facility, analysis and assessment ofA tool for the PC has been developed that can simply

measurecalculatethe program will give people a rough estimate and help

thermalenvironment

mitigation

effectregardingconsolidation,smootheffect,migration program for consolidation, cooperation with

air-conditioning load reduction effect and CO2 reduction

public welfare and agriculture measure, and theseeffect if individual or multiple countermeasures of urban

researches will be addressed regarding importantheat island countermeasures are adopted. It is effective tochallenge that local public entities face, and it willconsider target area of measure and combination ofideally support efforts to business solution.

measure. Also, it can be used for numerical goal of