Impact of climate change on the water requirements of the Bounamoussa perimeter, North-East of Algeria

Abstract

The objective of this work is to determine the effects of climate change on the water needs of crops in the Bounamoussa perimeter, which is one of the large irrigation systems in the North-East of Algeria in order to predict a diagnosis of its operation. This region covers an area of 16,500 ha and is specialized in vegetable production.The climatic trend of recent years in the study area is characterized by increasingly severe drought conditions that have compromised agricultural production at this perimeter. In this study, the results of the climatic parameters projected to 2050 and 2080 under the Climate Wizard program were used in the CropWat 8.0 program for estimating the future water requirements of crops, taking into account the three Scenarios (B1, A1B, A2) of greenhouse gases (GHGs). The Decision Support System for Agrotechnology Transfer (DSSAT) 4.5 program has also been used to generate future climatic parameters (temperatures and rains) to be compared with those of the climate wizard. The results obtained in 2050 and 2080 show a trend towards increasing temperatures and a fall in rainfall for all models and that the water requirements will be multiplied by 3 to 5 times the current needs. This situation will cause an imbalance in the operation of perimeter irrigation systems. Among the measures of adaptation to this situation in the first place is the change of the date of planting after calibration of the two models for all the cultures of the perimeter.

Fruit preservation packaging technology based on air adjustment packaging method

“…Fresh vegetables and fruits will continue to breathe despite being separated from their regular nutritional sources and the parent plant (Malkia & Etsouri, 2018). A product's rate of respiration can be assessed by either the rate of CO 2 generation or the rate of O 2 absorption under typical aerobic circumstances.…”

A review of crop water productivity in the Mediterranean basin under a changing climate: Wheat and barley as test cases

“…Changes in crop water requirements with climate change have been observed in many countries in the basin. Individual ET responses to water scarcity have been noted in many Mediterranean countries; for example, a simulation study by Malkia and Etsouri (2018) pointed out a three‐ to fivefold increase in agricultural water requirements in Algeria's Bounamoussa Perimeter irrigation scheme, which is one of the larger irrigation systems in the north‐east of Algeria. Similarly, Herrera et al (2015), using climate forecasting, found that Spain will experience a drop in annual precipitation as high as 30%, and an 18% increase in potential ET in the next few decades.…”