soil genesis and evolution studies are based on well understanding of geochemical processes involved in pedogenic processes and formation of soil. parent materials are main factors controlling soil properties in arid and semiarid regions. in this study, physicochemical and geochemical properties of 6 selected soil profiles developed on basalt rocks along arid (eshtehard), semiarid (qazvin) and ...

[1] Semiarid rangelands are a significant global sink for methane (CH4), but this sink strength may be altered by climate change. Methane uptake is sensitive to soil moisture showing a hump‐shaped relationship with a distinct optimum soil moisture level. Both CO2 and temperature affect soil moisture, but the direction of CH4 uptake response may depend on if the system is below or above the soil...

Semiarid grasslands accumulate soil beneath plant ‘‘islands’’ that are raised above bare interspaces. This fine-scale variation in microtopographic relief is plant-induced and is increased with shrub establishment. Research found that fire-induced water repellency enhanced local-scale soil erosion that reduced variation in microtopographic relief, suggesting that fire may counteract vegetation-...

Wells drilling process in fractured-bedrock aquifers is a difficult task. Extreme variations lithology and structure features, as well productive water zones sited at preferential points make geological geophysical investigations difficult. To contribute to the understanding of groundwater occurrence aquifers, this paper develops prospective model by using regression analysis, whose parameters ...

Sorghum is a critical crop especially in semiarid areas where there inadequate moisture.it the fifth important among cereals. C4 plant which originated and diversified Ethiopia. It used for feed, fuel, consumed by human beings form of enjera, boiled porridge or gruel, malted beverages, beer, popped grain, chips. In Ethiopia, biotic, socioeconomic, abiotic restrictions limit sorghum production p...

Variable rate irrigation (VRI) is used to save water whilst maintaining crop yields in semiarid regions. A key problem be able inexpensively determine spatial patterns soil moisture so that VRI zones can defined. In Southern Idaho, USA, the annual precipitation low and most falls as winter snow. This research investigates whether snow melt measured using freely available time-series Sentinel 2 ...

Abstract Phyllodytes tuberculosus is a bromeligenous anuran species whose geographic distribution restricted to areas of the Caatinga and transition zones between Atlantic Forest in central-south state Bahia. Its existence close relationship with bromeliads its occurrence dry highly seasonal environments drove us supposition that opportunistic/generalist regard diet. We collected items present ...

A risk assessment of vegetation zone responses to climate change was conducted using the classical Holdridge life zone model on the Loess Plateau of Northwest China. The results show that there are currently ten vegetation zones occurring on the Loess Plateau (1950–2000), including alvar desert, alpine wet tundra, alpine rain tundra, boreal moist forest, boreal wet forest, cool temperate desert...

The Middle East is faced with a water shortage crisis due to its semiarid and arid climate. In this paper, precipitation as an important part of the cycle was evaluated in 43 stations across using stable isotope technique study parameters which influence content precipitation. First, stepwise regression model applied determine main geographical climatological factors affecting isotopes Secondly...