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Content · Content Introduction Phenomena of Land Use Changes ... Green Bowl of Malaysia because it...
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Transcript of Content · Content Introduction Phenomena of Land Use Changes ... Green Bowl of Malaysia because it...
Content Introduction
Phenomena of Land Use Changes
Mapping of Land Use Changes
Methods
Primary Results and Discussions
• LULC maps
• Issues and challenges
Conclusion
Cameron Highlands - Green Bowl of Malaysia because it is the main
vegetables producer terraced vegetation (vegetables, flowers, and
tea).
The most popular vegetables are English cabbage, Chinese cabbage,
tomato, lettuce, onion, snow peas, celery, spinach, tong ho, beans,
mustard, capsicum, and radish + other land uses are developed for
tourism, residential area, highways, dam, and forest reserve.
The increasing impact of land use changes on the sustainability
of the environment and on the livelihood of the population have
become an issue of concern both in the developed and the
developing countries.
Malaysia land use changes process is contributed mainly by
urbanization process, logging, mining and agricultural production
dominant activities in rural region and/or in urban fringe.
Changes are needed for the nation to progress need a proper
monitoring system and compliance to existing development guidelines.
Without proper monitoring environmental issues and concerns +
escalading incidence of natural and human-induced disasters including
landslides, floods and land degradation in rural and urban fringe areas.
This paper attempts to address the prevailing development issues and
challenges derived from the land use changes in Cameron Highlands,
Pahang, Malaysia.
To explore the potential use of advanced and modern geospatial
technology to produce land-use-land-cover (LULC) map to: (1) identify
features of land-use-land-cover, (2) to analyses land use changes and (3)
to detect activities that contribute towards deforestation, soil degradation
and other disaster-related events.
Mapping and Monitoring of Land Use Changes
Causal effect development activities + modern
agriculture technology increase demand for food
pressure to land conversion deforestation, soil
degradation, resource depletion increasing incidence
of natural and human induced disaster affecting
livelihood and environment.
Methods
Adopt an interdisciplinary
and collaborative research
approach technique.
Commonly applied to studies
on environmental and land
use changes able to
integrate information, data,
tools, perspectives and
concepts from two or more
different fields/disciplines of
research - Gbenga (2008)
and Elmqvist (2006).
Interdisciplinary and
collaborative approach could
enhance research findings and
improve fundamental
understanding on subject
matter and might provide
solutions that are beyond the
scope of a single
field/discipline of research
Geospatial technology
(temporal satellite images/GIS)
Social Science approach
(fieldwork and survey)
Land-Use-Land- Cover (LULC)
changes research
Field survey on land use changes
Land-Use-Land- Cover (LULC) changes:
mapping and analysis
The study developed an object-oriented method for mapping and monitoring the
changes of land-use-land-cover (LULC) in a complex environment. Temporal
satellite images (2001-2014) are intensively used to produce a series of LULC
maps.
Class DescriptionPrimary forest Primary forest in Cameron Highlands consists of lowland evergreen rainforest, lower montane
forest and upper montane forest. The trees are mostly tall and closed canopy. In the naturalcolor (RGB) setting, the image of primary forest was observed as darker green.
Secondary forest The undergrowth or secondary forest is commonly smaller and shorter than primary forest suchas shrubs, bushes, bamboos and vegetation. From the satellite image, the secondary forest haslighter color than the primary forest (e.g. lighter green in natural color).
Agriculture Cameron Highlands is famous producing fresh vegetables and flowers that are terraces along theslopes. The cultivated land is covered with plastic to reduce soil erosion. Thus, the satelliteimagery of this area appears shiny white color unlike the image of usual plantation area.However, tea plantation is not covered with plastics, which makes the image is distinctive fromother agricultures.
Urban / Settlement The urban area includes settlements, roads and buildings.
Bare soil This area consists of exposed land and landslides.
Water bodies This area represents lakes and river.
Results and
Discussions
Land use map for Cameron Highlands in year 2005 (Left) and in year 2014 (Right)
Class Distribution Summary
Class Distribution (%)Year 2005 Year 2014
Primary Forest 79.19 *59.99
Secondary Forest 4.68 **16.50
Agriculture 12.82 12.18
Bare Soil 0.53 1.49
Urban / Settlement 2.74 **9.14
Water Bodies 0.04 0.70
Percentage of land cover classes in 2005 and 2014 in
Cameron Highlands, Pahang
We can no longer afford to ignore climate
change causing heatwaves, wildfires,
increased drought, reduced agricultural yields,
water scarcity, flooding, erosion and poorer air
quality in the US (NASA).
Without a doubt, human activity is the dominant
cause of climate change. Economic
development and population growth around the
world have led to atmospheric concentrations of
greenhouse gases that the planet hasn’t seen in
800,000 years.
By 2100, 100 million people could be displaced,
making the current refugee crisis seem small. To
give you another idea of scale, rising sea levels
could swamp every city on the east coast of the
US. The price tag for all of this is estimated to
come to roughly 20 percent of global GDP.
Conclusion
The geospatial technology is increasingly being used
to study land use and land cover changes and to
identify changes that has occur through different land
use activities which may have negative impact on the
sustainability of the environment and biodiversity
protection and conservation.
Preliminary result (LULC map) forested
area in Cameron Highlands is decreasing
significantly in 10 years but agriculture and
urbanization regions are increasing.
This study recommended that land use
changes influenced by human activities
should be continuously monitored using
advanced and modern geospatial
technology.
Establishment of special area planning at
every sub-districts of CH to regulate land
use changes towards SD at grassroots
level.