vegetation and site planning2.ppt
TRANSCRIPT
-
7/29/2019 Vegetation and Site Planning2.ppt
1/24
VEGETATIONAND
SITE PLANNING
-
7/29/2019 Vegetation and Site Planning2.ppt
2/24
PLANTSAND PEOPLE
The human race could not
exist without plants, yet their
importance is persistently
ignored by government, their
officials, developers and
individuals when they make
decisions about what should
happen on individual sites.
-
7/29/2019 Vegetation and Site Planning2.ppt
3/24
Plants are vital to human life because:
They provide oxygen we need to breath
They provide food we eat
They provide the habitats to support wildlife anddomesticated animals
They provide the soul from erosion
They control the rate at which rainwater is madeavailable to the soil and underground water supplies
They make soil fertile by providing humus andreturning nutrients to the soil and influencing soilstructure
They make the climate more moderate locally and theyalso have major impact through the great forest onworld and regional climates
-
7/29/2019 Vegetation and Site Planning2.ppt
4/24
Plants are fragile living organisms and if too many
are removed it can lead some areas to
environmental catastrophies.
-
7/29/2019 Vegetation and Site Planning2.ppt
5/24
Until recently plants were given a low priority by
those involved in site development. Now, it is at
least partly recognized that the conservation ofplants where possible, should apply on all sites.
Particularly in cities it has been regarded as justifies
to eradicate plants totally from a site.
-
7/29/2019 Vegetation and Site Planning2.ppt
6/24
Only recent have site planners and developers
begun to understand that plants are more than
decorative elements in cities for they have too oftenbeen seen as useful in improving the visual quality
of the city. Now people are becoming aware that
plants have an even greater influence over
environmental health in the city than they have overthe visual environment.
-
7/29/2019 Vegetation and Site Planning2.ppt
7/24
They perform many functions which make lifein the city more bearable. For instance they
modify: Microclimate
Reduce glare
They create shade
They influence the movement of air through thecity and through its unbuilt areas
They remove dust particles and cleanse the air ofother impurities
And increase the possibility of privacy
-
7/29/2019 Vegetation and Site Planning2.ppt
8/24
In addition, through the wildlife they support,plants provide signs of the link between manand nature which, as the Urban Wildlifemovements of many European countriesattest, is seen as of growing importance bycity dwellers in the developed countries.
Perhaps because in the modern industrial citypopulations are furthest removed fromultimate man or nature interface of having towork the land for food, they seem to be
seeking to renew the link with nature in a newway within the city.
-
7/29/2019 Vegetation and Site Planning2.ppt
9/24
PLANTSAND SITE
PLANNING
-
7/29/2019 Vegetation and Site Planning2.ppt
10/24
Site planner must collect very detailed information
about the plants that grown on and around the projects
area so that they can understand the role that plats doand could play in the site layout proposal.
The site planners has to understand the role of plants in
the environment:
That plants can never be neglected by any site
planner intent on producing an environmentally
sensitive layout.
That plants selection can never be arbitrary because
all plants are site specific in their requirements for
growth and survival.
-
7/29/2019 Vegetation and Site Planning2.ppt
11/24
There are sites where the use of plants is
inappropriate but, to be able to identify where
these are, the planner has to understand how plants
are used in a wider areas than that covered by theproject and, therefore, must always look beyond the
immediate area of the site.
The decision to preserve existing plants or to inducenew ones should be arbitrary. It should relate to the
area in which the site is located as well as to the
character of the project. The positioning of the
planted areas, the species used, whether the plantsare native or exotic, will be determined by the site
plan design. The choice should be guided by the
information about site assessed in relation to the
needs of the user.
-
7/29/2019 Vegetation and Site Planning2.ppt
12/24
PLANTSARE LIVING
THINGS
-
7/29/2019 Vegetation and Site Planning2.ppt
13/24
Within development projects plants have
rarely been understood as living elements in
the landscape.
Too often trees are regarded as sculptures,
which will survive whatever happens around
them. It appears probable that this lack of
understanding of the trees, as a living
elements requiring certain conditions for
survival, is a reason for every high death rate
among newly planted trees in recent
development schemes.
-
7/29/2019 Vegetation and Site Planning2.ppt
14/24
Planting is often carried out in totally
unsustainable soils, wit no proper
preparation of the ground and with noaftercare. Perhaps due to the increasing
public understanding of the natural
environment, the way site planners anddevelopers regarded plants to be changing.
Public and political attitudes, however, need
to change faster, if the continued erosion of
natural vegetation and particularly decline in
the number of mature trees is to be halted.
-
7/29/2019 Vegetation and Site Planning2.ppt
15/24
PLANT COMMUNITIES
http://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptxhttp://localhost/var/www/apps/conversion/tmp/scratch_6/Plant%20community.pptx -
7/29/2019 Vegetation and Site Planning2.ppt
16/24
-
7/29/2019 Vegetation and Site Planning2.ppt
17/24
To those unfamiliar with plants is often
appears that plants grow haphazardly. this
impression of randomness is emphasized in
Britain where, because of the mild climate,
plants from all over the world flourish in
parks and garden. In is generally only when,as site planners, we become concerned to
conserve nature and the integrity of a
landscape, or to keep the cost of landscapemaintenance to a minimum that we realized
the importance of using native and not exotic
species.
-
7/29/2019 Vegetation and Site Planning2.ppt
18/24
Where it is the intention to conserve nature
or produce a naturalistic landscape, it is
necessary to work with plant communities.Native vegetation will support the greatest
range of native wildlife. It also has the added
advantage that if fits the local landscape, it
looks right-its form(shape) is characteristic of
local landscape, its colours blend with the
local landscape, it is appropriate to use the
native species of plants.
-
7/29/2019 Vegetation and Site Planning2.ppt
19/24
In addition, native vegetation has the
advantage of being more resistant than exotic
species to the plant growth problems
associated with local fungi, aphids and plant
disease. It is, therefore, sensible to use it
where possible to minimize the long-termmanagement cost associated with the care of
all landscapes.
-
7/29/2019 Vegetation and Site Planning2.ppt
20/24
Major Factors influencing the characteristics of plant
community
-
7/29/2019 Vegetation and Site Planning2.ppt
21/24
In a small country like Britain there are
distinct vegetation changes in different parts
of the countryside. These vegetation changesare because plants only tolerant of a certain
range of conditions, some a wide range
others a narrow range. Survival aredetermined by local climate and soil and
influenced by the way in which people have
tended the land in the past and present.
-
7/29/2019 Vegetation and Site Planning2.ppt
22/24
Plant Communities are change by the past and
present actions of urban and rural populations.
Woodland felled
Wetland drained
Agriculture has been mechanized Artificial fertilizes used
Grazing regimes change
Towns built
Bogs drained
-
7/29/2019 Vegetation and Site Planning2.ppt
23/24
In order to produce natural-looking
landscapes and to conserve the local wildlife,
the site planner has to know: the range of plants that are locally important and to
understand how they can be grouped together in
communities, to function as support for different types of
wildlife.
Needs to recognize the scarcity of natural and semi-
natural vegetation in various parts of the world and to
ensure that any areas worthy of retention as a scarce
resource occurring within the project site are conserve.
Also need to consider the impact of development within
the project area on any adjacent or nearby areas of rare
vegetation or plant communities.
-
7/29/2019 Vegetation and Site Planning2.ppt
24/24
For these reasons a detailed survey of plants
immediately around the site is required. This
information also gives the site planner who isworking on the plantless site an idea of which
plants might be appropriate in relation to the
local natural environment.