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The study aims to comprehend the drought conditions and provide integrated solutions that are nature based as well as traditional for the study case of Banaskantha district, Gujarat. Standardized Precipitation Index (SPI) was used to determine the duration of dry and wet conditions whereas Vegetation Condition Index (VCI) was used to determine the spatial extent of plant-based soil moisture for the study case. Integrating Nature-based Solutions (NbS) along with the traditional disaster risk management approaches and engineered solutions have been suggested through the development of scenarios. Sample-based scenario building combines four different surface roughness and soil types. A variation in surface roughness through the application of integrated solutions increases the soil moisture content whereas reduces the runoff depth. Agricultural cultivation, plantations in agricultural land, restoration of native plant species, restoration of flood plains, and revival of wetlands were assessed as surface roughness modulators. The runoff depth decreased in a range of 8–54.76% for different soil types and the soil moisture content increased in a range of 41.28–92.57%.

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Comprehending Drought Mitigation Probabilities Through Integrated Techniques of Using NbS and Traditional Disaster Risk Management

  • 章节

  • 发表日期：

    2025年

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  • Divya S. Agarwal,
  • Alka Bharat

摘要

The study aims to comprehend the drought conditions and provide integrated solutions that are nature based as well as traditional for the study case of Banaskantha district, Gujarat. Standardized Precipitation Index (SPI) was used to determine the duration of dry and wet conditions whereas Vegetation Condition Index (VCI) was used to determine the spatial extent of plant-based soil moisture for the study case. Integrating Nature-based Solutions (NbS) along with the traditional disaster risk management approaches and engineered solutions have been suggested through the development of scenarios. Sample-based scenario building combines four different surface roughness and soil types. A variation in surface roughness through the application of integrated solutions increases the soil moisture content whereas reduces the runoff depth. Agricultural cultivation, plantations in agricultural land, restoration of native plant species, restoration of flood plains, and revival of wetlands were assessed as surface roughness modulators. The runoff depth decreased in a range of 8–54.76% for different soil types and the soil moisture content increased in a range of 41.28–92.57%.