climate change adaptive mechanisms for the … center/documents/2015_wa… · typical ifugao...
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CLIMATE CHANGE EFFECTS ON THE WATER RESOURCES OF THE BANAUE RICE TERRACES, A WORLD HERITAGE,
PHILIPPINES
Dr. Maria Rebecca A. Campos University of the Philippines
Open University
2015 OU International WaTER Conference
Oklahoma, USA 1
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Climate Variability Predictions (IPCC TAR, 2001; IPCC FAR, 2007)
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• More intense extreme hydrologic events
• More frequent events
• More extreme events
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Vulnerability to typhoons of different provinces of the Philippines
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Responses to and Managing Risks due to Climate Change
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• Adaptation
• Mitigation
• Coping
• Avoiding
• Technology/ improved practices
• Farm management practices
• Institutional measures (e.g. agri-insurance, calamity fund, etc.)
• Others
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The Banaue Rice Terraces, a UNESCO World Heritage located in the Philippines, was built by the Ifugao indigenous upland communities 2,000 years ago.
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5 CLUSTERS
1. Nagacadan
terrace cluster
in the
municipality of
Kiangan, a rice
terrace cluster
manifested in
two distinct
ascending rows
of terraces
bisected by a
river
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2. Hungduan
terrace cluster
that uniquely
emerges into a
spider web
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3. Central
Mayoyao terrace
cluster which is
characterized by
terraces
interspersed with
traditional
farmers’ bale
(houses) and
alang (granaries);
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4. the Bangaan
terrace cluster in
the municipality
of Banaue that
backdrops a
typical Ifugao
traditional village
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5. Batad
terrace cluster
of the
municipality of
Banaue that is
nestled in
amphitheatre-
like semi-
circular
terraces with a
village at its
base. 12
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The rice terraces show the engineering skills and ingenuity of the Ifugaos, indigenous peoples who built
these.
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Irrigation is by means of mountain streams and springs that have been tapped and channelled into
canals that run downhill through the terraces.
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However, climate change has affected the Banaue Rice Terraces as manifested by droughts triggered El Nino that led giant worms to erode the soil. 16
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To protect their livelihood from farming from the impacts of extreme weather conditions intensified by climate change is exhibited by how they have adjusted their farming systems to adapt to the effects of constrained water resources.
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This is manifested in the central role of their traditional literary arts and beliefs in the form of songs, dances, folklore, spiritual beliefs, ecological wisdom, kinship orientation, sense of tribal awareness and artistic temperament.
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• The adaptive management practices of the Ifugaos in response to environmental conditions are planning for their subsistence or survival; organization in their culture (beliefs, traits and values); direction and leadership according to their orientations and practices; and control according to their faith and beliefs.
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• The use of spiritual beliefs, rituals and ceremonies; ecological wisdom; forest protection; kinship orientation; sense of tribal awareness and peace pacts; artistic temperament; and survival were the approaches and prevailing practices to environment of the Ifugaos.
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• The strengths and weaknesses of their beliefs, traits, values, practices and subsistence; and the adaptation process of their adaptive management and community were the bases of local resilience strategy to climate change.
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Drawing lessons for the design of community based adaptation, planned interventions should also be based on practices that are already being implemented well by indigenous communities like the Ifugaos.
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Moreover, since water is the most vital constituent in rice terraces farming, most of the activities being held by the farmers are concentrated on water/irrigation
management.
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The study concludes that human and cultural adaptation involves a range of factors relating to ideology, techno-
economy and social organization, in addition to biophysical/environmental impacts.
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The influence of gods, spirits and ancestors in the forms of
either human, animals or plants in the natural environment;
and being very superstitious, resourceful, self-reliant,
courageous, skilled, artistic in temperament, hardworking,
respectful, humble, simple, conservative, kind, graceful in
stature, heavily ornamented, generous, carefree/cheerful,
romantic, and kinship oriented were the traditional beliefs,
traits and values of the Ifugaos.
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Repair of terraces
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Early Warning System IRI Regional Climate Forecast
Precipitation Temperature
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Typhoons in the Philippines
• Average of 20 typhoons annually occur
– Accompanied by strong winds, intense rainfall,
– Flooding occurs
Typhoon incidence map of the Philippines (Source: Manila Observatory)
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Crop Forecasting System Knowledge-based crop forecasting system framework
IRI SCFIRI SCFIRI SCFIRI SCF
Downscaled SCFDownscaled SCFDownscaled SCFDownscaled SCFProcessProcess--BasedBased
Crop SimulationCrop SimulationProcessProcess--BasedBased
Crop SimulationCrop Simulation
•• Planting DatePlanting Date
•• Planting DensityPlanting Density
•• Water ManagementWater Management
•• FertilizationFertilization
•• Other Management Other Management
MeasuresMeasures
CROPPING CROPPING
STRATEGIESSTRATEGIES
•• Planting DatePlanting Date
•• Planting DensityPlanting Density
•• Water ManagementWater Management
•• FertilizationFertilization
•• Other Management Other Management
MeasuresMeasures
CROPPING CROPPING
STRATEGIESSTRATEGIES
Satellite ImageSatellite Image
Yield ProbabilitiesYield Probabilities
Isabela
Los Banos
Bukidnon
CPF Plot of Yield at harvest (kg [dm]/ha)
Har yield kg/ha
550050004500400035003000250020001500
Cum
ula
tive P
robability
1
0.75
0.5
0.25
0
Yield ProbabilitiesYield Probabilities
Isabela
Los Banos
Bukidnon
CPF Plot of Yield at harvest (kg [dm]/ha)
Har yield kg/ha
550050004500400035003000250020001500
Cum
ula
tive P
robability
1
0.75
0.5
0.25
0
Crop Area EstimateCrop Area EstimateCrop Area EstimateCrop Area Estimate
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Thus, both indigenous practices and modern technology are imbibed in the current management of the rice terraces in order to mitigate the impacts of climate change
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The documented water management strategies are
• repair and maintenance of dikes
• use of PVC pipes to convey water from source to the terraces,
• use of irrigation canals.
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RECOMMENDATIONS 1. Desirable and useful beliefs,
traits, and values should be sustained for environmental adaptation and survival. The heritage of the indigenous peoples in terms of effective and efficient environmental adaptation should be preserved and dignified by all sectors of the society.
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2. Ecological wisdom, forest protection and resourcefulness should be practiced by all. These practices should be integrated in environmental awareness with public dissemination of information and documentation to be initiated by environmental agencies and educational institutions.
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3. The Philippine government and non-governmental organizations should enrich the strengths of the indigenous peoples in terms of environmental adaptation; and initiate projects that will improve the modes of subsistence and knowledge; and reduce the beliefs in super natural, heavy dependence on physical environment, conservatism and shyness of the indigenous peoples.