Storm in a teacup? Adapting to the impacts of climate change in China - Presentation Transcript
Storm in a teacup? Adapting to the impacts of climate change in China Thomas Tanner (IDS) Declan Conway (University of East Anglia) 20 th November 2008
“ Climate change is a major global issue of common concern to the international community. It is an issue involving both environment and development, but it is ultimately an issue of development.” China’s National Climate Change Programme June 2007.
China and Climate Adaptation – Why the Interest?
Continental scale geography and population
Significant contributor to global emissions
Recent history of climate change
Rapid growth and socio-economic change
Existing environmental stresses
Increasing awareness and recognition of exposure and sensitivity; - Floods 2007 - Spring Festival 2008
Climate Change in China: Impacts and adaptation Defra-DFID China-UK collaboration Prof Lin Erda [email_address] Chinese Academy of Agricultural Sciences Declan Conway, UEA [email_address]
Achievements in Phase I (2001-04) Climate Change Scenarios Temperature to increase by 3~4℃ and rainfall to increase 10~12% by 2080s Crop Yield Changes Yields of rice, maize and wheat to change significantly in the next 80 years - without any adaptations 2 2.5 3 3.5 4 4.5 5 5.5
Phase II (2005-08)
Aims:
Improvements to national modeling of climate impacts
Ningxia case study: Integrated assessment for adaptation policy making
The integration approach
Change in total cereal production with different combinations of drivers
Only climate change:
Without CO 2 , modest negative impacts by 2050s
Change in total cereal production with different combinations of drivers
Climate change and CO 2 :
With CO 2 , production increases in all cases
Change in total cereal production with different combinations of drivers
Climate change and water:
Water is a significant limiting factor for future cereal production
All drivers together:
Multiple effects; CO 2 tends to counter-balance impacts, BUT…
PRECIS simulates upper limits of precipitation increase
Effects of extremes (and pests/diseases) underestimated
National analysis obscures areas with much larger changes (maize high sensitivity)
CO 2 effect may not be so large/sustained
‘ Optimistic’ results
Ningxia Autonomous Region – north-west China Semi-arid to arid – high levels of rural poverty Range of different farming systems
Research impacts and vulnerability in the agricultural sector
To help develop the capacity to plan for and respond to a changing climate in China and Ningxia
Design a regional adaptation framework and strategy for Ningxia
adaptation strategy for the agricultural sector in Ningxia
An adaptation framework for Ningxia Working with UKCIP Adaptation as a process 3 Identify adaptation options 1 Assess climate risks 2 Integrate development and adaptation goals 4 Prioritise options New knowledge/ research 6 Monitoring and evaluation 5 Implementation
High-level adaptation recommendations for agriculture and prioritisation
Consider establishment of a cross-departmental group on adaptation within regional government
Raising awareness on climate change trends, potential impacts and adaptation activities across the region
High-level adaptation recommendations for agriculture and prioritisation
Good potential exists to integrate concerns within ongoing rural development programmes
www.china-climate-adapt.org
An applied approach to climate change impacts in the Chinese water sector 4 case studies of major development programmes Team of water resources, economics and agriculture experts Feeding into NDRC thinking and strategy on adaptation
Rationale
Climate change impacts affect the effectiveness of development investments
Pilot an adaptive approach based on adapting existing management systems
Adaptation: Assessing how project objectives might be affected by future climate-related impacts, and identifying options to manage impacts and exploit opportunities.
Time Current End-date Current Project objective Indicator Effect of climate change – failure to meet Objective Project progress with climate change Without climate change Change due to planned infrastructure, management changes etc within Development Project
Case Studies Project Location Flood control and land drainage management project Huai River Basin Integrated Water and environment management project Hai River Basin Water Conservation Plan Hai River Basin Integrated Restoration Plan Shi Yan River Basin Climate change impacts Increased flooding Increased reservoir inflow Increased water deficit Reduced catchment runoff
Case Studies Project Adaptation options Flood control and land drainage management project
Drainage canal pond network, raise land
Raise runoff canals
Improve flood and drought monitoring, forecasting, warning and operating systems
Integrated Water and environment management project
Convert paddy areas
Interbasin water transfer
Water reuse through sewage treatment
Water Conservation Plan
Water pricing
Drainage and irrigation
Integrated Restoration Plan
Water saving projects
Inter-basin water transfer
What do the results tell us?
Challenges of traditional climate science
Existing ‘adaptation gap / deficit’
Adaptation as providing opportunities
Adaptive responses framed as both technological and social
Challenges: Climate Science
Uncertainty about the detail of CC remains high
research to reduce uncertainties
flexibility / adaptive management
Time scales beyond horizons of stakeholders
Other socio-economic changes more significant
Modelling impacts can become very complex and time consuming
Climate science Seasonal forecasting / Decadal variability (causes of droughts) Improved understanding of CO2-crop water use-land cover interactions Better understanding of extremes (projections and impacts)
Methods:
Impacts assessment – can be very technical/time consuming – keep simple
Consultation essential – understanding current sensitivity, vulnerability and capacity to adapt
Beyond economic cost benefit analysis - MCA recognises other factors in decision making
Embed CC concerns within existing management systems and processes
No blueprints for adaptation process –invest time on communication and awareness raising
Opportunities:
Recent extremes may highlight current sensitivity and vulnerability (and effective responses)
Collaboration, ‘shared experiences’ worked well
National and international implications
Many existing options often already present – ‘no regrets’ [CC often exacerbates existing problems]
Entry points likely to deal with existing ‘adaptation gap’: better management of climate impacts
Thank you
www.china-climate-adapt.org
Project description Identify climate- sensitive components Problem analysis
Rapid strategic descriptive summary
Identify climate-sensitive components
Identify relevant quantitative project objectives
Identify appropriate indicators
Descriptive overview of each Case Study
1 Phase Steps
Project description Identify climate- sensitive components Problem analysis Semi-quantitative analysis of impacts Quantitative analysis of adaptation options
Rapid strategic descriptive summary
Identify climate-sensitive components
Identify relevant quantitative project objectives
Identify appropriate indicators
Develop scenarios
Compare levels of stress in each scenario against project objectives – can it cope?
Assess need for adaptation
Identify adaptation options
Estimate costs of each adaptation option
Estimate costs of damages (without adaptation)
Descriptive overview of each Case Study
1 2 Phase Steps
Project description Identify climate- sensitive components Problem analysis Semi-quantitative analysis of impacts Quantitative analysis of adaptation options Multiple Criteria Analysis
Rapid strategic descriptive summary
Identify climate-sensitive components
Identify relevant quantitative project objectives
Identify appropriate indicators
Develop scenarios
Compare levels of stress in each scenario against project objectives – can it cope?
Assess need for adaptation
Identify adaptation options
Estimate costs of each adaptation option
Estimate costs of damages (without adaptation)
Evaluate preferred option (including ‘No changes currently needed’)
Descriptive overview of each Case Study
1 2 3 Phase Steps
Experiences from Testing in Water Sector in China
Raise awareness and promote action
China’s experience in managing climate impacts
Dealing with future uncertainty
Scenario, Timescale, Extreme events
Non-monetary aspects of economic evaluation
Tackling demand as well as supply issues
General Experiences and Lessons for Climate Screening in China
The suggested framework is flexible
E.g. Applied to contrasting aspects of water sector
Not a finished process
Ongoing cycle of learning
Integration into planning is required
‘ No change’ option
Adaptation not always best option
Need to avoid lock-in, maintain flexibility
Ongoing monitoring of impacts and management
Possible Next Steps
Integration into planning and design
Further case study learning – other sectors Improved applied climate science – uncertainty
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