scholarly journals COMPOSITION AND PROPERTIES OF HUMUS SOILS OF VERTICAL ZONALITY OF THE WESTERN TYANSHAN AND THEIR WASHED DIFFERENCES

2019 ◽  
pp. 63-68
Author(s):  
N.B. Raupova ◽  
S.A. Abdullaev
Keyword(s):  
Vertical Zonality

Influence of the vertical zonality of moun-tain ranges of Kabardino-Balkaria on quantitative indicators of sheep infection with bio - and geohelminthes

2020 ◽  
Vol 1 ◽  
pp. 24-32
Author(s):  
Kh.Kh. Shahbiev ◽  
◽  
I.D. Gazaev ◽  
A.A. Didanova ◽  
◽  
...  
Keyword(s):  
Average Level ◽  
Frequency Of Occurrence ◽  
Gastrointestinal Helminths ◽  
Abiotic Conditions ◽  
High Incidence ◽  
Low Levels ◽  
National Selection ◽  
Quantitative Indicators ◽  
Selection Of ◽  
Vertical Zonality

This article is devoted to the study of susceptibility of sheep to bio - and geohel-minthes at an altitude of 1200 - 3500 m. The sea in the mountain tracts of Kabardino-Balkaria. It is established that in the tracts of Intsyty, Dzhalpak, home, Dougat, located at an altitude of 1200 - 1500 m. the sheep have the same frequency of occurrence. In the tracts of Intsyty, Dzhalpak, home, Dougat, gastrointestinal helminths of 12 species, with the exception of the species T. skrjabi-ni Kalant., 1928, had a high EI level of 47-69%. The tracts Shyki, Bashil, Irikchat, Tyzyl located at an altitude of 1500 - 2000 m.n.u. Sea, sheep folk selection of 5 types of bio - and geohelminthes were found with high incidence (EI = 45-70%); 6 species above the average level of occurrence (EI = 29-38%); 13 species with an average level (EI = 13-24%; 2 species with low levels of reg-istration (EI = 6-12%). Sheep national selection in the tract Irikchat, Tyzyl, Gil-Su, Ush-tulu, Adylsu at an altitude of 2000 - 2500 m, are defined 4 types geohelminthes, they found a higher than average incidence levels (EI = 30-40%); 6 species with an average level of occurrence (ee = 14-26%); 3 species with a weak registration (EI = 7-12%). At an altitude of 2500 - 3000 m in the hole Dykhtau, Zhangugan, Donguz-Orun and Ulla-tau in sheep folk selection highlighted 3 types geohelminthes with an average level of occurrence (EI = 15-27%); 5 species with a weak indicator of EI = 6-11%. The tracts Azau, Cheget, Tau ёzen and Shaurtu at an altitude of 3000 - 3500 m.n.u. Sea, sheep worming national selection was not selected, because at these altitudes, virtu-ally no favorable abiotic conditions for their circadian rhythm.

scholarly journals Vertical zonality of fractionated granite plutons reflected in zircon chemistry: the Cínovec A-type versus the Beauvoir S-type suite

2012 ◽  
Vol 63 (5) ◽  
pp. 383-398 ◽  
Author(s):  
Karel Breiter ◽  
Radek Škoda
Keyword(s):  
Czech Republic ◽  
Chemical Composition ◽  
Vertical Section ◽  
Chemical Compositions ◽  
Massif Central ◽  
Intermediate Unit ◽  
Type Granite ◽  
Vertical Changes ◽  
High Degree ◽  
Vertical Zonality

Abstract We studied vertical changes in the chemical composition of zircon from two contrasting Variscan granite systems. The Beauvoir system (Massif Central, France) composed of three successive intrusions (B1, B2, B3) represents typical peraluminous S-type granite extremely enriched in P, F, Li, Rb, Cs, Be, Sn, Nb, Ta, and poor in Zr, Th, REE and Y. The Cínovec system (Krušné hory Mts/Erzgebirge, Czech Republic/Germany) composed of two successive intrusions (protolithionite granite, zinnwaldite granite) is only slightly peraluminous, P-poor, F, Li, Rb, Cs, U, Th, REE, Y, Sc, Sn, W, Nb, Ta-rich granite, which may be classified as A-type. In both localities, the most fractionated intrusions are located on the top of the system. Samples from borehole GPF-1 (Beauvoir) represent an 800 m long vertical section through the entire granite stock, while CS-1 borehole (Cínovec) reached a depth of 1600 m. Chemical compositions of zircons from both granite systems show distinct vertical zonality, but their shape and elemental speciation is highly contrasting. At Beauvoir, zircon shows a remarkable increase in Hf-content from 2-4 wt. % HfO2 (~0.03 apfu Hf) in the deepest B3-unit to 15-19 wt. % HfO2 (up to 0.18 apfu Hf) in the uppermost B1-unit. The highest contents of F, P, and U were detected in the intermediate unit B2 at a depth of 400-600 m. At Cínovec, Hf shows only moderate enrichment from ca. 2 wt. % HfO2 in the deeper protolithionite granite to 5-10 wt. % HfO2 in the uppermost part of the zinnwaldite granite. High contents of Th (3-8 wt. % ThO2) are entirely bound in the uppermost section of the granite copula to a depth of 200 m, but below this level the contents only sporadically exceed 1 wt. % ThO2. Concentrations of U, Y, HREE, Sc and Bi also reach their highest values in the uppermost parts of the zinnwaldite granite, but their decrease downward is much gentler. Extreme enrichment of outer zones of zircon crystals from some granites with Hf or high contents of Th, U, REE, Y, Nb and of some other elements in zircons from other localities is not considered to be a specific phenomenon characterizing melts of A- or S-type granite, but reflects a high degree of fractionation of systems rich in Na and F.

scholarly journals The gynoecium structure in Dracaena fragrans (L.) Ker Gawl., Sansevieria parva N.E. Brown and S. trifasciata Prain (Asparagaceae) with special emphasis on the structure of the septal nectary

2014 ◽  
Vol 66 (4) ◽  
pp. 55-64 ◽  
Author(s):  
Anastasiya Odintsova ◽  
Oksana Fishchuk ◽  
Aneta Sulborska
Keyword(s):  
Basal Zone ◽  
Septal Nectary ◽  
The Common ◽  
Vertical Zonality

In the gynoecium of <em>Dracaena fragrans</em>, <em>Sansevieria</em> <em>parva </em>and <em>S. trifasciata</em>, the vertical zonality of the ovary, the structural zonality of the gynoecium following Leinfellner, and the zonality of the septal nectary were studied. The ovary structure is characterised by a high parenchymatous ovary base and ovary roof as well as a long septal nectary that can be extended in both of them and opens with secretory nectary splits. The gynoecium of these species has a short synascidiate zone, a fertile hemisynascidiate zone with a median ovule attached, a hemisymlicate zone (only in <em>D. fragrans</em>) and an asymplicate zone (with postgenitally fused carpels) that comprises the ovary roof, common style and stigma. In the septal nectary, we detected three vertical zones: the basal zone of the distinct nectary in the ovary base or/and the synascidiate zone, the zone of the common nectary (in the hemisynascidiate and hemisymlicate zones) and the zone of the external nectary (the nectary splits in the asymplicate zone). The gynoecium structure in the studied species shows differences in the length of the gynoecium and septal nectary zones and also in the interrelationships of all these three types of vertical zonality.

scholarly journals Comparative Floral Morphology and Anatomy of Gagea s. str. and Lloydia

2021 ◽  
Vol 74 ◽  
Author(s):  
Andriy Novikov
Keyword(s):  
Light Microscopy ◽  
Vertical Structure ◽  
Floral Morphology ◽  
Vascular Bundles ◽  
Correct Interpretation ◽  
Type C ◽  
Vertical Zonality

Abstract Flowers of the five species from the four sections of the genus Gagea (that is, G. lutea , G. pusilla , G. reticulata , G. fragifera , and G. serotina (syn. Lloydia serotina ) were investigated by light microscopy. All investigated species had similar flower organization, vertical zonality of the gynoecium, and floral vascularization. In all species, the flowers were trimerous, with the superior ovary and short complete or semicomplete syntepalous zone at the base. The presence of the syntepalous zone allows consideration of such flowers as an intermediate between hypogynous and perigynous. All investigated species had nectaries at the base of the tepals. However, in Gagea s. str., they were represented by relatively small nectariferous areas of the tepals located at the beginning of the synascidiate zone of the gynoecium. In contrast, the nectaries in G. serotina were represented by elongated tepalar outgrowths located higher, at the level of the fertile symplicate zone of the gynoecium. Considering reports on the potential peltate origin of the nectaries in G. serotina , it is probably incorrect to interpret them as homologous to the nectaries in Gagea s. str. The gynoecium in the studied species demonstrated identical vertical zonality with synascidiate, symplicate, and asymptomatic zones, and corresponded to type C of the syncarpous gynoecium. At the base of the ovary, three carpels were congenitally isolated (primary synascidiate zone); however, they were isolated only postgenitally (secondary synascidiate zone). This secondary synascidiate zone originated from a symplicate zone due to the fusion of the carpelar margins. Although it looks like a synascidiate zone, for correct interpretation of the gynoecium’s vertical structure, it should be considered symplicate. The vascularization of the flower in all investigated species was similar, with the participation of lateral vascular bundles in the supply of placentas.

Variation in the vertical zonality of erodibility and critical shear stress of rill erosion in China's Hengduan Mountains

2018 ◽  
Vol 44 (1) ◽  
pp. 88-97 ◽  
Author(s):  
Zhengan Su ◽  
Donghong Xiong ◽  
Jianhui Zhang ◽  
Tao Zhou ◽  
Hongkun Yang ◽  
...  
Keyword(s):  
Shear Stress ◽  
Critical Shear Stress ◽  
Hengduan Mountains ◽  
Rill Erosion ◽  
Vertical Zonality

scholarly journals The soils elemental composition of vertical zonality of the Western Tien Shan

2019 ◽  
Vol 5 (3) ◽  
pp. 96-103
Author(s):  
N. Raupova ◽  
S. Abdullaev
Keyword(s):  
Carbon Content ◽  
Elemental Composition ◽  
Humic Acids ◽  
C:N Ratio ◽  
Atomic Ratio ◽  
Tien Shan ◽  
Low Carbon ◽  
Aromatic Carbon ◽  
Vertical Zoning ◽  
Vertical Zonality

The elemental composition allows to obtain information about the principles of humic acids structure, some of their properties, as well as to identify chemical changes and processes occurring in the process of humification. Studies of the elemental composition of humic acids of the main types and subtypes of soils of the vertical zoning of the Western Tien Shan show that the carbon content in them increases from grey soils to mountain brown soils. the low carbon content in the series is accompanied by a narrow C:N ratio, which indicates a smaller condensation of the aromatic carbon grid and the severity of the side chains. The atomic ratio of C:N in humic acids of soils of the Western Tien Shan is 11–25. The narrowest ratio of C:N is observed in sierozems, and the transition from them to brown this ratio expands.

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