Central Asian Scientific Press (CAS-Press)Central Asian Journal of Environmental Science and Technology Innovation2717-40343520221001Assessment of quantitative and qualitative characteristics of rivers in the catchment area of the Salt Lake in Alborz Province of Iran12814215481210.22034/CAJESTI.2022.05.01ENShadi SarafDepartment of Water Structures, Sari Agriculture and Natural Resources University, Sari, Iran0000-0003-2493-5276Javad VejahatDepartment of Water Structures, University of Tehran, Tehran, IranJournal Article20220130The characteristics of watersheds are influenced by various factors and parameters that have led them to be considered dynamic and active phenomena in the environmental field. Various criteria and standards have been established for watersheds that provide a suitable approach for controlling watershed conditions. Therefore, the study of watershed characteristics may include different sections. In this study, water resources and potentials in the study area are examined. The quantitative and qualitative characteristics of the salt lake watershed (sediment condition, flow velocity, precipitation, pH changes, amount of dissolved solids) in Alborz province of Iran were studied. For this purpose, the potential of surface waters and their hydraulic and hydrological conditions were evaluated. The results showed that the study area has very good water resources compared to neighboring basins and basins with the same conditions. The basin is mountainous in the northern regions and a plain with a dry climate in the lower regions. Despite the great climatic differences, the rivers have sufficient and stable water flow to satisfy the needs of stakeholders and the riparians, except on certain days of the year. However, there have always been challenges in adjacent or similar watersheds. Clearly, implementing management measures to maintain stability and increase enjoyment should be on the agenda.http://www.cas-press.com/article_154812_3baa7d84e3d4bba46410ed29c111b369.pdfCentral Asian Scientific Press (CAS-Press)Central Asian Journal of Environmental Science and Technology Innovation2717-40343520221001Study of morpho-physiological traits in maize (Zea mays L.) genotypes with environmental stress indices14315216215410.22034/CAJESTI.2022.05.02ENDavar MolazemDepartment of Agriculture, Astara Branch, Islamic Azad University, Astara, Iran0000-0002-3451-8030Journal Article20220604To evaluate some agrophysiological traits to identify salt tolerance in maize, eight different maize genotypes differing in yield performance were evaluated using an RCBD design in two different environments: one with normal soil and the other with saline soil. During the experiment, chlorophyll a, chlorophyll b, leaf relative water content (LRWC), proline content, stress tolerance (TOL), stress tolerance index (STI), stress susceptibility index (SSI), and yield stability index (YSI) were evaluated. The results of the experiment showed that there were significant differences between locations (normal and saline) and genotypes for most traits. Comparison of traits at different salinity levels showed that there were significant differences between genotypes for most traits. Proline content increased with increasing soil salinity. Na+ accumulation in leaves increased sharply with increasing salinity, with the greatest accumulation observed in S.C704. The highest amount of chlorophyll a under normal conditions was observed at S.C704. Positive correlations were observed between chlorophyll a and chlorophyll b under normal and stress conditions. Genotypes SC301, SC704 and SC540 showed the highest levels of TOL and SSI. Genotypes KSC647 and SC604 showed the highest value for YSI (0.627 and 0.578, respectively).http://www.cas-press.com/article_162154_ae8a50facf5bffa4212a4097a308ce98.pdf