排序方式： 共有10条查询结果，搜索用时 15 毫秒
1
1.
S. B. Sosorova A. B. Gyninova M. G. Merkusheva L. L. Ubugunov L. N. Boloneva 《Eurasian Soil Science》2012,45(4):376-385
The content of microelements (Mn, Zn, Cu, Co, Ni, Cr, Pb, and Cd) and Fe is determined in the soils and plants of the Lake
Kotokel’ basin. Their content in the soils is proved not to exceed the regional background and the existing MPC and APC. The
content of Cd is revealed to exceed its clarke value for the world soils, which is related to the natural origin of this element.
The concentrations of Mn, Co, and Pb are close to their clarke values, and those of Zn, Cu, Ni, and Cr are lower than their
clarkes. The studied soils are specified by the maximal amount of the mobile forms of microelements. The profile distribution
of the microelements differs depending on the genetic soil type. For Mn, Zn, and Cu, a significant biogenic accumulation is
pronounced in the organic soil horizons. The content of microelements in the aboveground phytomass exceeds the maximal permissible
levels for Mn, Co, Cr, and Fe. The intensity of the microelements absorption by the plants varies widely, being specified
by the high coefficient of the biological adsorption (except for Fe). Mn, Zn, and Cu are accumulated in the plant phytomass
the most intensely. 相似文献
2.
A. B. Gyninova S. A. Shoba L. D. Balsanova 《Moscow University Soil Science Bulletin》2008,63(3):104-108
Micromorphological features and physical properties of podbels in the middle reaches of the Amur River have been examined. It is argued that the well-pronounced aggregation in the illuvial horizons of these soils is formed under the impact of cryogenic processes. The bleaching of the eluvial-gley horizons of podbels is also enhanced under the impact of cryogenesis. The corresponding process can be referred to as the cryoeluviation process. 相似文献
3.
Gyninova A. B. Dyrzhinov Zh. D. Kulikov A. I. Gyninova B. D. Gonchikov B. N. 《Eurasian Soil Science》2019,52(4):414-425
Eurasian Soil Science - The development of sandy soils under pine forests and the influence of forest fires on the soil properties have been studied in the Baikal region, The profile of background... 相似文献
4.
The soil cover patterns in the subtaiga landscapes on the northern spurs of the Tsagan-Daban Ridge in the Selenga Mountains
have been studied. Gray-humus lithozems and bedrock outcrops are typical of the steep south-facing slopes under herbaceous
pine forests. Soddy iron-illuvial podburs are formed under forest vegetation on gentle slopes of northern and western aspects
with a thick mantle of loose colluvial deposits. Dark-humus metamorphic soils occur on the slopes of western and northwestern
aspects below 700 m a.s.l. under secondary forb-grassy communities that replaced the initial herbaceous pine forests. Windblown
hollows (yardangs) are occupied by humus psammozems under steppe pine forests. The morphological and physicochemical characteristics
of these soils are discussed in the paper. 相似文献
5.
6.
A. B. Gyninova T. V. Tursina L. D. Balsanova B. D. Gyninova S. A. Inozemtsev 《Eurasian Soil Science》2010,43(6):628-634
The soils of pine-birch forests on Pleistocene lake-river terraces in the Selenga delta region were studied. These soils are
characterized by their weak differentiation into genetic horizons, pale or light brown color, and the weak structure of their
mineral horizons. The high base saturation, weakly acid or close to neutral reaction, and homogeneous bulk chemical composition
evidence the absence of the eluvial-illuvial differentiation of the soil profiles. The humus is of the fulvate-humate type.
Among the humic acids, the brown acids predominate; the content of black humic acids is slightly lower and that of the nonhydrolyzable
residue is elevated. In the mineral horizons, the clay and iron-clay autochthonous formations on the primary mineral grains
point to the weakly pronounced process of metamorphism. In the Bm horizon, the formation of crystallized iron compounds in
the form of films and fine iron segregations is observed. 相似文献
7.
B. D. Gyninova A. B. Gyninova L. D. Balsanova 《Moscow University Soil Science Bulletin》2008,63(4):171-177
Five types of soils representing an evolutionary sequence have been distinguished within the Selenga River delta. At the first stage. alluvial meadow-swampy, swampy, and stratified soddy alluvial soils are formed. At the second stage, meadow calcareous alluvial soils are developed. At the third stage of evolution, leached meadow soils are widespread. This soil sequence is related to changes in the hydrological regime of delta areas upon gradual aggradation of the surface with corresponding changes in the character of vegetation. 相似文献
8.
L.?D.?BalsanovaEmail author A.?B.?Gyninova N.?B.?Badmaev 《Russian Agricultural Sciences》2016,42(1):71-75
The preferential distribution of soddy podburs on loose sandy sediments of different genesis, as well as the possibility of their formation on loess-like carbonate rocks and, in rare cases, on the eluvium of metamorphic biotite–chlorite shales, has been revealed. The differences in the microstructure, composition, and properties of soils are due to the impact of different soil-forming rocks. The results of study will contribute to the classification of regional soils and the optimization of forest and agricultural land use. 相似文献
9.
The main regularities of soil development in the Selenga delta area of the Baikal region have been studied. The terraces of Lake Baikal and the Selenga River are occupied by soddy forest and gray forest soils. Intrazonal saturated and calcareous alluvial soils are formed on the Selenga floodplain and delta. Soddy soils of pine forests occur on natural levees along the streams; hollows and depressions are occupied by swampy soils. 相似文献
10.
Regularities of soil distribution in the basin of the Vorovka River on the northern macroslope of the Tsagan-Daban Ridge are discussed, and the grouping of soil cover patterns in this area is suggested. Dissected middle-mountain areas covered by taiga forests are characterized by a combination of predominate soddy podburs with small homogeneous areas of podburs and lithozems. Within the piedmont part of the basin, components of soil combinations are different. The major areas are occupied by sandy soils under dry grassy pine forests; poorly developed soils are formed on recent alluvial and colluvial deposits in the depressions and hollows. 相似文献
1