Birnith

Iberian semiarid gypsum environment. This has been carried out by means of Canonical Correspondence Analysis as a hypothesistesting tool. CCA models show that the spatial data matrix is able to explain a relevant fraction of the soil data set (P < ). The most important variable, as firstly selected in the CCA stepwise selection procedure, suggests the existence of a vegetationelevation ...

 · Gypsum is commonly used to reclaim sodic and saline soils in arid and semiarid regions, for example, especially where salty water is used for irrigation. Gypsum has also been shown to increase aggregation, reduce surface crusting, improve crop rooting, and boost yields in soils of the Southeast's Piedmont and Coastal Plain regions. There the ...

Gypsum physical soil crusts and the existence of gypsophytes in semiarid central Spain Roberto L. Rornao1 and Adri?n Escudero2* 1 Universidade Estadual de Feira de Santana. Laboratorio de Ecolog?a Evolutiva da, Av. Universitaria, s/n. Feira de Santana BA, Brasil; 2Biodiversity and Conservation Group. Universidad Rey Juan Carlos. C/. Tulip?n s/n. M?stoles E28933. .

Lime Leachability Studies on Treated Expansive Semiarid Soil., In the Proceedings of Fourth International Conference on Geotechnique, Construction Materials and Environment, held at Brisbane, Australia, 19 – 21 November 2014, pp. 315319.

Smallscale spatial soilplant relationship in semiarid gypsum environments Adrián Escudero IntroductionIt has been long accepted that interactive soilplant relationships induce spatial patterning in soil properties, and that individual plant performance and even plant communities may respond to soil heterogeneity caused * FAX No: +. More (PDF) Gypsum Mining Production Processing ...

In the present work, successional plant and soil dynamics on abandoned gypsum quarries were studied, using the chronosequences approach covering a time span of 70 years. From an ecological perspective, the results suggest that: (1) the successional pattern on gypsum outcrops does not differ greatly from that observed in other areas under semiaridtype climate; (2) several phytocoenological ...

At the semiarid Iron King Mine and Humboldt Smelter Superfund site in central Arizona, the mineral assemblage of the top 2 m of tailings has been previously characterized. A distinct redox gradient was observed in the top m of the tailings and the mineral assemblage indies progressive transformation of ferrous iron sulfides to ferrihydrite and gypsum, which, in turn weather to form ...

Gypsum is calcium sulfate dihydrate (CaSO 4 2H 2 0). Flue gas desulfurization (FGD) gypsum, such as GYPSOIL ® brand gypsum, is a coproduct material derived from the scrubbing of flue gas emissions in coalburning power plants. Gypsum can be spread with lime and litter spreaders. Gypsum is not acid soluble and will not change the soil pH.

 · Gypsum rich soils are found in many parts of the world, particularly in arid and semiarid regions. Most gypsum occurs in the form of evaporites, which are minerals that precipitate out of water due to a high rate of evaporation and a high mineral concentration. Gypsum rich soils make good foundation material under dry conditions but pose major engineering hazards when exposed to water.

Lime • Accummulation of ... SemiArid soils of Central Otago and identifying characters of the wines grown on those soils. There is also a logical expectation that individual vineyard wines may have characters that are the expression of the soils the vines are grown on. But to identify subregional wine characters within the SemiArid soil zone of Central Otago and be able to relate those to ...

We evaluated the effects of irrigation on stream hydrochemistry in a Mediterranean semiarid chment (Flumen River, NE Spain). The Flumen River was separated into two zones based on the intensity of irrigation activities in the watershed. General linear models were used to compare the two zones. Relevant covariables (urban sewage, pig farming, and gypsum deposits in the basin) were ...

Why are arid/semiarid zone soils salty, and why does it matter? First, let us answer why soils get salty. Salts are naturally occurring, soluble minerals in areas where soil evaporation and plant water use (or transpiration) are both high, and precipitation is low. In that scenario, dissolved minerals concentrate over time as the extraction of essentially pure water leaves the soluble mineral ...

In our arid western climate, evaporation within the soil leads to the concentration of the dissolved ions in soil pore waters and to the precipitation of minerals such as gypsum, calcite, and manganese oxide within the Bhorizon. (Do you think this would also happen in a wetter climate? If not, where are all those dissolved constituents going to end up?)

licited resource in semiarid regions to supply the growing needs for drinking water, agricul ture and industry. However, the decrease in aquifer reserves caused by the imbalance between groundwater recharge and extraction aggravates the problems related to the pollution of this resource. The water resources pollution has gained a universal interest due to anthropogenic activities [Allechy ...

These findings provide information for evaluating land use practices for increased soil carbon sequestration under semiarid region biofuel crop production. This study investigated a new strategy for increasing carbon retention in slightly alkaline soils through addition of fuel gas desulfurization gypsum (FGDG, CaSO4∙2H2O).

This paper determines the influence of lime and gypsum on the rehabilitation of a degraded sodic soil in a semiarid environment 12 years after appliion. The aim was to assess alternate rehabilitation strategies for sodic soils to the appliion of gypsum alone. An experimental site where lime and gypsum combinations (L0G0 – lime 0 t ha1 and gypsum 0 t ha1, L0G1,, L0G5, L1G0, L2 ...