Wells and land use changes in Dakhla Oasis (Egypt) using geospatial analysis: case study of Rashda village

Iwasaki, Erina; Elbeih, Salwa F.; Shalaby, Adel; Khedr, Hossam; Zaghloul, El Sayed

doi:10.1007/s41207-020-00202-x

Cited by 2 publications

(1 citation statement)

References 11 publications

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“…The results obtained must be interpreted taking into account the great variability of the Mediterranean climate and noting that the only factor that helps to determine the annual olive production and is integrated into the study is rainfall. However, as already noted above, other prominent factors also influence olive production, such as temperature, soil type and mechanisation of olive production (Assefa et al 2020;Iwasaki et al 2020;Marques et al 2020;Yazdanbakhsh et al 2020). 3 Spearman's rank correlation coefficients for pairwise correlations among the average rainfall for each month from January to December, the total average rainfall (R), the total olive production (P) and the average annual rainfall (A) Jan, Feb, Mar, ..., Dec are the average rainfall values for the corresponding months * Correlation is significant at the p < 0.05 level The dataset shows that the rainfall data series for the municipality of Bailén is highly irregular.…”

Section: Correlation Statistics and Principal Component Analysismentioning

confidence: 91%

Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain)

Rodrigo‐Comino

Senciales-González

et al. 2021

Euro-Mediterr J Environ Integr

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Economic, social, and climatic conditions affect agricultural production. Those changes are relevant to the rainfed agricultural areas of the Mediterranean Belt, including Spain—the largest producer of olive oil in the world. However, little is known about the effect of the climate on olive production and farmer income. In this study, the correlation between changes in rainfall and total olive production was examined using a long-term dataset (28 years) on conventional rainfed production and tillage soil management. The dataset focused on different olive groves in the municipality of Bailén (Jaén, Andalusia) that have been owned by the same farmer since 1966. The province of Jaén is the region of Spain with the highest production of olive oil and the largest area of olive groves. The data included annual rainfall, production per plot and the price of olives. After calculating missing data to complete the rainfall series, pairwise correlation analysis with nonparametric Spearman's rank coefficients and principal component analysis were used to process the data. The results showed that higher production coincided with increased rainfall during August and December. Therefore, we concluded that the impact of rainfall on olive production is variable and depends on drought intensity and the monthly rainfall distribution. An economic study showed that farmer income was highly dependent on the seasonal distribution of the rainfall among other factors such as the price of olives. Farmer income was low during drought periods, indicating that rainfed agriculture is perceived by farmers as unsustainable due to the resulting highly variable income. This study could help to prevent risks to food security in the future. We recognise that other key factors have also been important influences on the fluctuations in olive production over the years, such as soil properties and plant status. However, cultivating olives without irrigation—depending only on the total rainfall amount and rainfall intensity to supply all of the water consumed by the plants—is very risky too. This research demonstrates that the subsistence of Mediterranean rainfed olive farmers can be highly dependent on the rainfall conditions.

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Section: Correlation Statistics and Principal Component Analysismentioning

confidence: 91%

Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain)

Rodrigo‐Comino

Senciales-González

et al. 2021

Euro-Mediterr J Environ Integr

View full text Add to dashboard Cite

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Evaluation of agricultural expansion areas in the Egyptian deserts: A review using remote sensing and GIS

Elbeih

2021

The Egyptian Journal of Remote Sensing and Space Science

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Wells and land use changes in Dakhla Oasis (Egypt) using geospatial analysis: case study of Rashda village

Cited by 2 publications

References 11 publications

Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain)

Long-term changes in rainfed olive production, rainfall and farmer’s income in Bailén (Jaén, Spain)

Evaluation of agricultural expansion areas in the Egyptian deserts: A review using remote sensing and GIS

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