Abstract
Drought is primarily an agricultural phenomenon that refers to conditions where plants are responsive to certain levels of moisture stress that affect both the vegetative growth and yield of crops. It occurs when supply of moisture stored in the soil is insufficient to meet the optimum need of a particular type of crop. Causes of drought in Bangladesh are related to climate variability and non-availability of surface water resources. While it may be possible to indicate the immediate cause of a drought in a particular location, it often is not possible to identify an underlying cause. Therefore, to improve all these services in favour of enhancing agricultural production and reducing food insecurity in Bangladesh, it is mandatory to develop an effective way for disseminating the SPI data indicating drought indices to farmers, and enhance drought and climate resilience. To develop future plan and policy in agricultural sector of Bangladesh, it is vital to understand the previous droughts events with accurate indicators. Since this study will contribute to the agricultural development of Bangladesh therefore there is an obvious need to understand the change of drought frequency all over Bangladesh using a standardized drought index. The main intention of this project is to prepare a proper baseline for forecasting drought indices using SPI data. So, the final outcome of this project would be a knowledge base where a proper forecasting tools and dissemination networks can be updated/developed for farmers.
Highlights
Agriculture is the largest sector of the economy in Bangladesh which is highly dependent on climatic phenomena
To improve all these services in favour of enhancing agricultural production and reducing food insecurity in Bangladesh, it is mandatory to develop an effective way for disseminating the standard precipitation index (SPI) data indicating drought indices to farmers, and enhance drought and climate resilience
Since this study will contribute to the agricultural development of Bangladesh there is an obvious need to understand the change of drought frequency all over Bangladesh using a standardized drought index
Summary
Agriculture is the largest sector of the economy in Bangladesh which is highly dependent on climatic phenomena Despite technological improvement such as improved crop varieties and irrigation system, weather and climate variability are still key factors in agricultural productivity due to climate induced consequences especially the droughts and increasing temperatures. Shortage of surface water and ground water abstraction cause depletion in soil moisture It puts immense pressure on agricultural production which is already in deficit status to meet up continuous demand of food for increasing population of Bangladesh. Past droughts have typically affected about 47 percent of the country and 53 percent of the population Under this circumstance it is high time to develop system to provide early warning about drought to the farmers to reduce/minimize the crop production loss and ensure effective use of irrigation water to maximum possible extent. The main objective of this study is to assess the drought indices at Upazila level using SPI data and assist the farmers in coping with climate induced drought through micro-level agricultural water management [4]
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