scholarly journals Employment of the Engineer System in Arid Mountainous and Desert Areas-- A Concept Paper

1981 ◽  
Author(s):  
Paul G. Cerjan ◽  
Theodore G. Stroup
Keyword(s):  
Engineer System ◽  
Desert Areas

Study on the Phenological Characteristics of the Main Plant Species and the Use of Pastures in the Minqin Desert Areas

2010 ◽  
Vol 27 (1) ◽  
pp. 20-26
Author(s):  
Zhao-feng CHANG ◽  
Fu-gui HAN ◽  
Sheng-nian ZHONG ◽  
Er-wu CHAI
Keyword(s):  
Plant Species ◽  
Desert Areas

Effect of NaCl on Physiological Features of 4 Legume Seedlings in Desert Areas of Xinjiang, China

2013 ◽  
Vol 47 (5) ◽  
pp. 491-499
Author(s):  
Han Zhangxiong ◽  
Li Li ◽  
Xu Xinwen ◽  
Lü Xiangfang ◽  
Yue Hongxia ◽  
...  
Keyword(s):  
Desert Areas

Lepidopteran species (Insecta: Lepidoptera) feeding on saxauls (Amaranthaceae) in desert areas of South-Eastern Kazakhstan

2016 ◽  
Vol VIII (19) ◽  
pp. 69-73
Author(s):  
Nagima Tumenbayeva ◽  
Bagdavlet Taranov ◽  
Dimitar Grekov ◽  
Vili Harizanova
Keyword(s):  
South Eastern ◽  
Lepidopteran Species ◽  
Desert Areas ◽  
Eastern Kazakhstan

scholarly journals Assessing Riyadh’s Urban Change Utilizing High-Resolution Imagery

Land ◽  
2019 ◽  
Vol 8 (12) ◽  
pp. 193
Author(s):  
Ali Alghamdi ◽  
Anthony R. Cummings
Keyword(s):  
Maximum Likelihood ◽  
High Resolution ◽  
Accuracy Assessment ◽  
Middle Eastern ◽  
Object Oriented ◽  
Training Data ◽  
High Resolution Imagery ◽  
Significant Research ◽  
Desert Areas ◽  
Spot 5

The implications of change on local processes have attracted significant research interest in recent times. In urban settings, green spaces and forests have attracted much attention. Here, we present an assessment of change within the predominantly desert Middle Eastern city of Riyadh, an understudied setting. We utilized high-resolution SPOT 5 data and two classification techniques—maximum likelihood classification and object-oriented classification—to study the changes in Riyadh between 2004 and 2014. Imagery classification was completed with training data obtained from the SPOT 5 dataset, and an accuracy assessment was completed through a combination of field surveys and an application developed in ESRI Survey 123 tool. The Survey 123 tool allowed residents of Riyadh to present their views on land cover for the 2004 and 2014 imagery. Our analysis showed that soil or ‘desert’ areas were converted to roads and buildings to accommodate for Riyadh’s rapidly growing population. The object-oriented classifier provided higher overall accuracy than the maximum likelihood classifier (74.71% and 73.79% vs. 92.36% and 90.77% for 2004 and 2014). Our work provides insights into the changes within a desert environment and establishes a foundation for understanding change in this understudied setting.

scholarly journals Climatic Zone and Soil Properties Determine the Biodiversity of the Soil Bacterial Communities Associated to Native Plants from Desert Areas of North-Central Algeria

2021 ◽  
Vol 9 (7) ◽  
pp. 1359
Author(s):  
Elisa Bona ◽  
Nadia Massa ◽  
Omrane Toumatia ◽  
Giorgia Novello ◽  
Patrizia Cesaro ◽  
...  
Keyword(s):  
Soil Properties ◽  
Bacterial Communities ◽  
Arid Environment ◽  
Climatic Zone ◽  
Indigenous Plants ◽  
North Central ◽  
The North ◽  
Desert Areas ◽  
Plant Microbiota ◽  
Semi Arid

Algeria is the largest country in Africa characterized by semi-arid and arid sites, located in the North, and hypersaline zones in the center and South of the country. Several autochthonous plants are well known as medicinal plants, having in common tolerance to aridity, drought and salinity. In their natural environment, they live with a great amount of microbial species that altogether are indicated as plant microbiota, while the plants are now viewed as a “holobiont”. In this work, the microbiota of the soil associated to the roots of fourteen economically relevant autochthonous plants from Algeria have been characterized by an innovative metagenomic approach with a dual purpose: (i) to deepen the knowledge of the arid and semi-arid environment and (ii) to characterize the composition of bacterial communities associated with indigenous plants with a strong economic/commercial interest, in order to make possible the improvement of their cultivation. The results presented in this work highlighted specific signatures which are mainly determined by climatic zone and soil properties more than by the plant species.

GROUND-WATER DEVELOPMENT IN DESERT AREAS

Ground Water ◽  
1968 ◽  
Vol 6 (5) ◽  
pp. 2-4 ◽  
Author(s):  
John W. Harshbarger
Keyword(s):  
Ground Water ◽  
Water Development ◽  
Desert Areas

scholarly journals FORMS AND HIST FORMS AND HISTORICAL ROO ORICAL ROOTS OF THE M S OF THE MAKHALLA

2020 ◽  
Vol 4 (5) ◽  
pp. 228-233
Author(s):  
Soyib Raupov ◽  
Keyword(s):  
Scientific Investigation ◽  
The State ◽  
Historical Trends ◽  
Scientific Hypothesis ◽  
Desert Areas ◽  
Investigation And Study

Background. In the following article, the concept of makhalla, its essence, functions, the responsibilities and the duties of the elderman of the makhalla are studied from the viewpoint of historical trends. Also, there is a discourse on the types of the makhalla, the makhallas which are adjacent to the cities and their suburbs, their peculiarities, the makhallas which are based on different professions and different ethnicities, including the makhallas of the Jews, the makhallas in the steppes and desert areas, the peculiarities of their management is analysed. Materials and methods. There is a scientific hypothesis that makhallas emerged long before the state. But this hypothesis is still waiting for its researchers who need scientific investigation and study. Sources found in Sopollitepa indicate that the place where 8 families stay is the makhalla. The eight families at this residence include more than a hundred couples of families, built according to the patriarchal order. Results and Discussions.

scholarly journals Exploiting delayed transitions to sustain semiarid ecosystems after catastrophic shifts

2017 ◽  
Author(s):  
Blai Vidiella, ◽  
Josep Sardanyés ◽  
Ricard V. Solé
Keyword(s):  
Computational Models ◽  
Warning Signal ◽  
Semiarid Ecosystems ◽  
Intervention Method ◽  
Catastrophic Shift ◽  
Future Potential ◽  
Desert Areas ◽  
Standard Models ◽  
Potential Shifts ◽  
Catastrophic Shifts

Semiarid ecosystems (including arid, semiarid and dry-subhumid ecosystems) span more than 40% of extant habitats and a similar percentage of human population. As a consequence of global warming, these habitats face future potential shifts towards the desert state characterized by an accelerated loss of diversity and stability leading to collapse. Such possibility has been raised by several mathematical and computational models, along with several early warning signal methods applied to spatial vegetation patterns. Here we show that just after a catastrophic shift has taken place an expected feature is the presence of a ghost, i.e., a delayed extinction associated to the underlying dynamical flows. As a consequence, a system might exhibit for very long times an apparent stationarity hiding in fact an inevitable collapse. Here we explore this problem showing that the ecological ghost is a generic feature of standard models of green-desert transitions including facilitation. If present, the ghost could hide warning signals, since statistical patterns are not be expected to display growing fluctuations over time. We propose and computationally test a novel intervention method based on the restoration of small fractions of desert areas with vegetation as a way to maintain the fragile ecosystem beyond the catastrophic shift caused by a saddle-node bifurcation, taking advantage of the delaying capacity of the ghost just after the bifurcation.

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