Simulating and monitoring water flow, salinity distribution and yield production under buried diffuser irrigation for date palm tree in Saharan Jemna oasis (North Africa)

Zemni, Nessrine; Slama, Fairouz; Bouksila, Fethi; Bouhlila, Rachida

doi:10.1016/j.agee.2021.107772

Cited by 23 publications

(15 citation statements)

References 58 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It is also a dilemma faced by other oasis regions worldwide (e.g., Western Asia, North Africa, etc.) (Buerkert et al, 2021;Mekki et al, 2013;Zemni et al, 2022). The increased water demand as well as a mismatch in timing between water supply and demand due to the seasonality of vegetation and crop growth are responsible for water scarcity (Lutz et al, 2022).…”

Section: Discussionmentioning

confidence: 99%

Water Availability in China's Oases Decreased Between 1987 and 2017

et al. 2023

View full text Add to dashboard Cite

Oases are the most dynamic, productive, and vulnerable ecosystems in drylands and are centers of human life and economic development in arid and semi-arid regions (X. Li et al., 2016;S. Zhou et al., 2015). In China, oases support the livelihoods of tens of millions of inhabitants, and maintaining the stability of oasis ecosystems is essential for regional ecological security and sustainable development (P. Chen et al., 2022a). Under climate change and expanded human activity, China's oases have undergone a significant expansion during the past three decades (P. Chen et al., 2022a), which has profoundly affected regional water budgets and ecosystem services (

show abstract

Section: Discussionmentioning

confidence: 99%

Water Availability in China's Oases Decreased Between 1987 and 2017

et al. 2023

View full text Add to dashboard Cite

show abstract

“…Previous studies on oases in dryland or desert regions on a global scale (e.g. West Asia, North Africa, etc) have also evidenced a general trade-off between oasis development and environmental security (Mekki et al 2013, Kimura et al 2020, Buerkert et al 2021, Zemni et al 2022, and these studies also provide valuable experience in balancing the development of oasis areas and environmental safety (e.g. regulation of water abstraction, optimize water supply and drainage systems and diversification of income sources).…”

Section: Implications For Oasis Expansion and Managementmentioning

confidence: 95%

Spatio-temporal patterns of oasis dynamics in China’s drylands between 1987 and 2017

Chen

Wang

Liu

et al. 2022

Environ. Res. Lett.

View full text Add to dashboard Cite

Oases are among the most productive and vulnerable ecosystems on drylands as well as central areas of human life and economic development. In China, oasis expansion and degradation are directly related to the survival and development of tens of millions of inhabitants who live within them, profoundly affecting human well-being. However, our understanding of the spatiotemporal dynamics of China’s oases has been limited. This creates a challenge to accurately assess the environmental impacts of oasis dynamics and sustainable oasis development. Here we analyzed Landsat images (5 TM, 7 ETM+, and 8 OIL, ∼61 900 images) over the period 1987–2017, and we produced annual maps of China’s oases (30 m spatial resolution) using trajectories and spectral-temporal segmentation algorithm (LandTrendr) and machine-learning methods (Random Forest). We found that oasis areas increased significantly between 1987 and 2017 (+8.82 Mha). Grasslands and croplands expanded the most, and reclamation of deserts and grasslands made cropland the largest gainer. At the provincial scale, oasis expansion in Inner Mongolia and Qinghai was mainly attributed to grassland restoration. In Xinjiang, Gansu, and Ningxia, reclamation of croplands was also an important factor in addition to grassland restoration. With the expansion of the oasis ∼73.36% of areas showed decreasing trends of soil moisture, and even desertification in some areas. The overexpansion of oases might cause a great challenge to regional water security. Our dataset and results can provide a basis for identifying trade-off areas/regions between development benefits and environmental impacts, helping policymakers to identify high-priority areas for intervention and reasonably plan land-use spatial structure in oasis areas for sustainable development of oases.

show abstract

“…The benefits of ecological water transfer are thus overshadowed by the negative effects of cropland expansion. Therefore, there is an urgent need to develop science‐based agricultural planning and to implement better‐informed water management strategies to address the current ecological challenges (Lutz et al., 2022; Qin et al., 2019; Vinca et al., 2021; Zemni et al., 2022).…”

Section: Discussionmentioning

confidence: 99%

Spatio‐Temporal Dynamics of Aboveground Biomass in China's Oasis Grasslands Between 1989 and 2021

Chen,

Wang,

Liu

et al. 2024

Earth's Future

View full text Add to dashboard Cite

Grassland provides multiple ecosystem services and plays a key role in preventing desert encroachment and maintaining oasis stability. In China, the area of cropland in oases has expanded significantly in recent decades, which results in a rapid increase in agricultural water demand and encroachment on grassland subsistence space. However, our knowledge about how the expansion of cropland affects oasis grasslands remains limited. We used machine learning, temporal segmentation of spectral trajectories, and maximum covariance analysis to generate an annual oasis grassland aboveground biomass (AGB) data set at 30‐m resolution from 1989 to 2021 based on multiple remotely sensed and ground observation data sets, and investigated the dynamics of grassland AGB under cropland expansion in oases. We found that overall oasis grassland AGB increased significantly (0.3 gm−2 yr−1, P < 0.01) during 1989–2021, but trends in AGB were not consistent across basins. In the Yellow River, Turpan Hami, Qaidam, and southern Altai Mountains River Basins, AGB was dominated by a significant increase. Conversely, in all basins in southern Xinjiang, AGB showed a decreasing trend due to the rapid cropland expansion. Spatially, cropland expansion and AGB dynamics were strongly coupled. In regions characterized by agricultural concentration, grassland AGB benefitted from resource spillover via edge effects. However, in downstream areas or those with a low proportion of cropland, where most grasslands are distributed, the relationship between the two shifted to a trade‐off. Our study provides a scientific basis for identifying priority areas for ecological restoration and for science‐based planning of the scale of cropland in oases.

show abstract

Simulating and monitoring water flow, salinity distribution and yield production under buried diffuser irrigation for date palm tree in Saharan Jemna oasis (North Africa)

Cited by 23 publications

References 58 publications

Water Availability in China's Oases Decreased Between 1987 and 2017

Water Availability in China's Oases Decreased Between 1987 and 2017

Spatio-temporal patterns of oasis dynamics in China’s drylands between 1987 and 2017

Spatio‐Temporal Dynamics of Aboveground Biomass in China's Oasis Grasslands Between 1989 and 2021

Contact Info

Product

Resources

About