Истифодаи оқилонаи захираҳои обӣ дар шароити тағйирёбии иқлим

  Мусоҳиба бо директори Институти масъалаҳои об, гидроэнергетика ва экологияи Академияи миллии илмҳои Тоҷикистон, номзади илмҳои техникӣ, дотсент Амирзода Ориф Ҳамид

 - Асосгузори сулҳу ваҳдати миллӣ - Пешвои миллат, Президенти Ҷумҳурии Тоҷикистон муҳтарам Эмомалӣ Раҳмон зимни суханронӣ дар мулоқоти якуми Панели сатҳи баланд оид ба ­масъалаҳои об ва иқлим, ки сеюми марти соли ҷорӣ баргузор гардид, пешниҳод намуданд, ки соли 2025 Соли байналмилалии ҳифзи пиряхҳо муайян карда шавад. Хоҳишмандем роҷеъ ба ҳадаф ва моҳияти ин иқдом андеша баён кунед.

Investigations of the Atmospheric Deposition of Major and Trace Elements in Western Tajikistan by Using the Hylocomium splendens Moss as Bioindicators

  The study was performed in a mountainous area of approximately 7000 sq. km of Western Tajikistan, i.e., Turkestan, Zeravshan, Hissar, and Karateghin ridges that are characterized by complex geological settings. Moss biomonitoring was used to assess the concentration level of trace and major elements in atmospheric deposition of the study area. Hylocomium splendens (Hedw.) Schimp. moss was used as biomonitor in this study. 43 major and trace-elements were determined by Epithermal Neutron Activation (ENAA) and Atomic Absorption Spectrometry (AAS).

Assessment of the Toxic Metals Pollution of Soil and Sediment in Zarafshon Valley, Northwest Tajikistan (Part II)

  Abstract: This study discusses contamination of soils and sediments with trace elements such as Mn, Ba,W, V, Co, Cr, Zn, Ni, As, Sb Hg as well as Th and U, the influence of natural and anthropogenic factors on the distribution of elements and the ecological state of the Zarafshon Valley. The elemental composition of 116 soil and sediment samples were analyzed by the neutron activation analysis. The calculation of the geoaccumulation index (Igeo), contamination factor (CF) and pollution load index (PLI) showed that some places in the investigated region with developed the industrial zones (around mining and processing plants of “Anzob”, “Konchoch”, “Kumargi bolo” and “Mogiyon”) are mostly polluted by As, Sb, Hg, and in rare cases, the high concentration ofWand V were determined.

Geochemical and isotope anomalies in Sioma river gorge, central Tajikistan

  Abstract: For a better understanding of the previously observed increased natural radioactivity at the confluence of Varzob and Sioma rivers, the activity concentration of natural radioactive ⁴⁰K, Th and U daughters as well as of the anthropogenic ¹³⁷Cs were determined in nine sampling points covering the entire Sioma river. The radiometric determinations evidenced, beside increased activity concentrations of Th and U daughter radionuclides, an anomalous accumulation of anthropic ¹³⁷Cs and natural ²¹⁰Pb in the middle of the Sioma gorge.