Concentrations of copper (Cu), lead (Pb), chromium (Cr), mercury (Hg), and arsenic (As) were measured in arid agricultural and irrigated agricultural soils collected in Daba Village, Shajiawuan Village, Gangou Village and Sifangwu Village, located in central Gansu Province, China. Concentrations except Hg and Pb were lower than the background values in grey calcareous soil in the selected arid ...

Hypotheses about the origin of vegetation pattern formation in semi-arid areas around the world almost all include a common feature of semi-arid areas: the presence of a positive feedback between plant density and water infiltration. We investigate whether this positive feedback and the spatial redistribution of runoff water are sufficient to explain vegetation pattern formation. For this purpo...

sesame is one of the oldest crops in the world that is commonly cultivated in arid and semi-arid due to high oil seeds (42-52 %). this study was conducted to investigate the effects of sulfur and biological fertilizers on physiological parameters of sesame at sari agriculture sciences and natural resources university in 2014 crop year. the experiment was conducted in a split factorial design ba...

Crops growing in salt-affected soils may suffer from physiological droughtstress, ion toxicity, and mineral deficiency which then lead to reduced growth andproductivity. A pot experiment was conducted to study the effect of differentsalinity levels, i.e. ECe=3 dS m-1 (control), 8, 12 and 16 dS m-1 on wheat grainyield, yield components and leaf ion uptake. Desired salinity levels were obtainedby...

Hydrological processes and their spatial distribution directly are relevant to climate, topography, geology, and land use in the watershed. Therefore, use of a model whit integrity and high performance for simulating the process in deferent watersheds is very important. In this study was assessment performance of semi-distributed SWAT model in simulating hydrology processes in three watersheds ...

Abstract. Irrigation is important for agricultural production and often decisive this, especially in arid semi-arid areas, where precipitation insufficient. In Brazil, irrigated agriculture responsible 46% of withdrawals from water bodies 67% the consumption total volume collected, representing highest consumptive use country. Remote sensing technologies have great potential developing methods ...

Plant phenology models, especially leafing models, play critical roles in evaluating the impact of climate change on the primary production of temperate plants. Existing models based on temperature alone could not accurately simulate plant leafing in arid and semi-arid regions. The objective of the present study was to test the suitability of the existing temperature-based leafing models in ari...

The dromedary camel (Camelus dromedarius, one-humped camel) is an important livestock species adapted to hot and arid environments. It is most abundant in the arid lowlands of Africa, the Middle East and Western Asia. The economic importance of this multipurpose animal is evident from the numerous benefits provided by camel products (meat, milk, wool). Moreover, the camel serves for riding, as ...