2015年-世界发展银行全球_Water_and_Climate_Adaptation_Plan_for_the_Sava_River_Basin___Annex_5_Guidance_Note_on_Adaptation_to_Climate_Change_for_Agriculture_36页_1mb

Summary of the Water & Climate Adaptation Plan for the Sava River Basin – Agriculture

Core Content

This document outlines the Water & Climate Adaptation Plan for the Sava River Basin (SRB), focusing specifically on agricultural adaptation. It is part of the Water Partnership Program (WPP) and the Trust Fund for Environmentally & Socially Sustainable Development (TFESSD), both supported by the World Bank. The report is structured to provide an overview of the agricultural sector in the four SRB countries (Slovenia, Croatia, Bosnia and Herzegovina, and Serbia), a vulnerability assessment, and potential adaptation strategies, with a special emphasis on irrigation as an adaptation mechanism.

Main Production in the Sava Basin

• Slovenia: Located in the upper reaches of the Sava River, with mostly forested areas. Agriculture is limited to alluvial fans and riverbanks. Key crops include winter wheat, maize, potato, and grapes.
• Croatia: Agriculture is concentrated in the Pannonian plain. Main production includes crops typical of Mediterranean climates.
• Bosnia and Herzegovina: Main agricultural areas are in the FBiH and RS regions. Crops include grains, potatoes, and livestock.
• Serbia: Main agricultural production is in the eastern plains. Key crops are grains, potatoes, and grapes.

Climate and Climate Predictions

The climate of the SRB varies by region:

• Slovenia: Sub-Mediterranean along the coast, Alpine in mountainous regions, and continental in flatter areas.
• Croatia: Similar to Slovenia, with a unique geography connecting mainland Europe to the Mediterranean.
• Bosnia and Herzegovina: A mix of mountainous and flat regions.
• Serbia: Continental climate with significant variations in temperature and precipitation.

Climate projections suggest:

• Precipitation will increase in winter months and decrease in summer months.
• Evapotranspiration (ETp) will increase, especially in summer.
• There is greater uncertainty in precipitation projections than in ETp, with more significant changes expected in the distant future.
• The crop water balance is projected to have minimal impact on most crops, except for potatoes, due to their shallow root zones.

Vulnerability Assessment

• Agriculture in the SRB is highly vulnerable to climate change, especially due to changes in precipitation and temperature.
• Forestry is considered the most vulnerable sector due to longer adaptation time and higher costs.
• The Sava River Basin is expected to face increased droughts and extreme weather events in the future, which could affect crop yields and water availability.

Adaptation Options

• Irrigation is identified as a key adaptation strategy, particularly for drought-prone areas.
• Drainage systems are crucial for managing excess water in agricultural lowlands.
• Spatial planning and sustainable management of natural resources are emphasized as important tools for climate adaptation.
• Enhanced knowledge and awareness of climate impacts and adaptation options are recommended.
• Integration of climate considerations into national and sectoral policies is necessary for long-term resilience.

Key Information

• Current irrigation coverage is very low in the SRB, with irrigation water use accounting for only 0.6% of total water withdrawals.
• Drainage systems are essential in Croatia, Serbia, and Bosnia and Herzegovina to manage excess water.
• Climate models (CLM, HadRM3Q0, RACMO, REMO, and RegCM3) are used to project future climate conditions.
• CROPWAT model is used to analyze crop water balance and yield responses.
• Adaptation strategies include:
  • Sustainable water management
  • Improved drainage systems
  • Spatial planning
  • Conservation of natural resources and biodiversity
  • Enhanced information systems and climate awareness

Strategic Areas and Measures

• Water Resource Sector: Focus on sustainable water management, flood prevention, and maintaining low flow rates.
• Forestry Sector: Sustainable forest ecosystem management and carbon conservation.
• Agricultural Sector: Emphasis on irrigation, drainage, and climate-resilient farming practices.

Conclusion

The report highlights the importance of agriculture in the SRB and the need for adaptation strategies to mitigate the effects of climate change. It recommends a multi-faceted approach involving improved water management, drainage systems, and climate-aware policies. The CROPWAT model is a useful tool for assessing crop water stress and yield changes, with irrigation being a key adaptation mechanism, especially for drought-prone areas. The analysis shows that while climate change poses challenges, strategic investments and policy reforms can enhance agricultural resilience and sustainability.