Soil property and soil organic carbon pools and stocks of soil under oases in arid regions of Tunisia

Omar, Zohra; Bouajila, Abdelhakim; Brahim, Nadhem; Grira, Mohamed

doi:10.1007/s12665-017-6745-z

Cited by 19 publications

(4 citation statements)

References 31 publications

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“…In the current study, the properties of soils from the Setif and Batna regions were similar to those reported in previous studies on soils of semi-arid regions in Algeria (Ababsa et al, 2020;Mehalaine and Chenchouni, 2020;Bona et al, 2021). Likewise, soils from the Eloued region showed the same characteristics as soils in the arid regions of Tunisia (Omar et al, 2017;Brahim et al, 2021).…”

Section: Bioclimatic and Pedological Conditionssupporting

confidence: 89%

“…Probably, these alkaline pH values were indicative of the presence of carbonate. Similar pH results were reported in soils of several olive groves in Tunisia (Omar et al, 2017). Results of AVONA showed that geographical location and cultivar type (P=0.000) exhibited a very significant impact on the pH, but not an interaction between them (P>0.050; Table 1).…”

Section: Bioclimatic and Pedological Conditionssupporting

confidence: 81%

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Leaf morpho-physiology and phytochemistry of olive trees as affected by cultivar type and increasing aridity

et al. 2022

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Section: Bioclimatic and Pedological Conditionssupporting

confidence: 89%

Section: Bioclimatic and Pedological Conditionssupporting

confidence: 81%

Leaf morpho-physiology and phytochemistry of olive trees as affected by cultivar type and increasing aridity

et al. 2022

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“…Other papers focused on the response of specific crops to climate change, as the one by Abid et al (Abid et al 2016) that highlights how some populations of Medicago sativa cultivated in Tunisian oases succeed to maintain good nutritive values under drought conditions representing an important resource for local livestock in a context of climate change. Moreover, arid soils are able to sequester large amounts of organic carbon under oases conditions (Omar et al 2017).…”

Section: Regulating Servicesmentioning

confidence: 99%

Traditional oases in Northern Africa as multifunctional agroforestry systems: a systematic literature review of the provided Ecosystem Services and of the main vulnerabilities

Santoro

2022

Agroforest Syst

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Traditional oases represent unique forms of adaptation to extreme environmental conditions, developed through the centuries by local farmers to support their livelihood, combining different crops (date palms, fruit trees, vegetables and fodder) with livestock breeding. Despite their social, economic and cultural importance, these agroforestry systems are currently facing multiple socio-environmental threats. The aim of the paper is to investigate the variety of Ecosystem Services (ES) and the main threats related to traditional oases in Northern Africa through a systematic literature review. The search returned 257 relevant papers published from 2005 to March 2022, mostly focusing on Tunisian oases (37%), followed by Algerian (23%), Moroccan (19%), Egyptian (17%), and Libyan (4%). Provisioning Services, in particular Genetic diversity, agrobiodiversity and biodiversity, are the most cited ES (36% of the papers) followed by Cultural Services, mainly represented by Traditional knowledge systems, cultural heritage and sense of place (17%), while Regulating Services are less considered. Results highlighted that water related issues (desertification, drought, salinization or overexploitation) represent the main threat, followed by decrease of agrobiodiversity, primarily due to the spread of monocultures of commercial date varieties, and by social transformations (depopulation, traditional knowledge and cultural heritage loss). The literature review proved that traditional oases are still crucial for the livelihood of local communities since they still provide many ES. Local experiences related to sustainable development and tourism, or innovative solutions to valorize local products and byproducts, could be important for replication in other traditional oases to contribute to the wellbeing of local communities and to the preservation of these agroecosystems.

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“…Similar pH values are detected by Mlih et al (2019) and Omar et al (2020) in the same regions under cultivated and non-cultivated soils. However, higher EC value in CS can be explained particularly by the use of saline water in irrigation (2.5 g/L to 4 g/L) (Omar et al, 2017;Corti et al, 2020). The presence of CaCO3 and gypsum in arid soils of Tunisia was related to the alteration of geological parent materials (Mtimet, 2001).…”

Section: Soil Propertiesmentioning

confidence: 99%

Soil Contamination by Phthalate Esters in Cultivated and Non-Cultivated Soils in North African Arid Regions: A Tunisian Case Study

Bouajila¹,

Omar²,

Saoud³

et al. 2022

Environ. Nat. Resour. J.

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Over the last decades, several studies showed that phthalic acid esters (PAEs) were ubiquitous environmental contaminants and became a major threat to human health. This study provided the first case study about the concentration and the potential sources of soil’s PAEs, both in Tunisia and North Africa. Soil samples were collected from four cultivated (CS) and two adjacent native soils (NS) at 0-10 cm and 10-30 cm layers in southeastern Tunisia. The PAEs concentrations were analyzed using a gas chromatography-mass spectrometry (GC-MS) system. Results showed that the total concentration of PAEs ranged from 2.40 to 11.05%. Higher values were detected in NS in the 0-10 cm layer contrary to CS which showed higher PAEs concentration in 10-30 cm depth. The di-n-butyl phthalate (DBP) and di-(2-ethylhexyl) phthalate (DEHP) were the most abundant PAEs. In the 0-10 cm layer, PAEs concentration was highly related to the age of the plastic film in CS. We observed a positive association between PAEs concentration and conductivity (EC) values. The PAEs concentrations were affected by the presence of soil organic matter (SOM) in CS. This decrease of PAEs in CS compared to the NS may be related to the microbial decomposition activity stimulated by the presence of fresh organic residues and fertilizers. These results showed that CS and adjacent NS in the studied regions were contaminated by PAEs which is probably a result of agricultural activities. More investigations on PAEs concentrations in various soil managements are needed to confirm these results.

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Soil property and soil organic carbon pools and stocks of soil under oases in arid regions of Tunisia

Cited by 19 publications

References 31 publications

Leaf morpho-physiology and phytochemistry of olive trees as affected by cultivar type and increasing aridity

Leaf morpho-physiology and phytochemistry of olive trees as affected by cultivar type and increasing aridity

Traditional oases in Northern Africa as multifunctional agroforestry systems: a systematic literature review of the provided Ecosystem Services and of the main vulnerabilities

Soil Contamination by Phthalate Esters in Cultivated and Non-Cultivated Soils in North African Arid Regions: A Tunisian Case Study

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