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Challenges for the sustainable use of water and land resources under a changing climate and increasing salinization in the Jizzakh irrigation zone of uzbekistan

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Journal of Arid Land 2020年第1期12卷 90-103页

作者： Rashid KULMATOV Jasur MIRZAEV Jilili ABUDUWAILI Bakhtiyor KARIMOV State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China National University of uzbekistan Tashkent 100170Uzbekistan CAS Research Center for Ecology and Environment of Central Asia Urumqi 830011China University of Chinese Academy of Sciences Beijing 100049China Tashkent Institute of Irrigation and Agricultural Mechanization Engineers Tashkent 100000Uzbekistan

Jizzakh Province in uzbekistan is one of the largest irrigated areas in Central Asia without natural *** combination with aridity,climate change and extensive irrigation practices,this has led to the widespread salinization of agricultural *** aim of this study was to identify opportunities to improve the reclamation status of the irrigated area and how best to effectively use the water resources in Jizzakh Province based on investigations conducted between 1995 and 2016.A database of field measurements of groundwater levels,mineralization and soil salinity conducted by the provincial Hydro-Geological Reclamation Expeditions was used in the *** total groundwater mineralization was determined using a portable electric conductometer(Progress 1T)and the chloride concentration was determined using the Mohr *** soil salinity analyses were conducted by applying two different methods:(1)the extraction and assessment of the soluble salt content,and(2)using an SM-138 conductivity sensor applied to a 1:1 mixture of soil sample and *** analyses of the monitoring results and the salt balance in the"irrigation water–soil–drainage water"system clearly demonstrated that the condition of the irrigated land in the province was not significantly *** these conditions,the stability of crop yields is achieved mainly through the use of large volumes of ***,excess amounts of mineral fertilizers can also cause the salinization of *** average groundwater salinization value in most of the irrigated land(75.3%)fluctuated between 1.1 and 5.0 g/L,while the values were less than 1.0 g/L in 13.1%of the land and in the range of 5.1–10.0 g/L in 10.5%of the *** the period of 1995–2016 the salinization level of the irrigated land in Jizzakh Province increased slightly and the area could be divided into the following classes:no salinity(17.7%of the total area),low salinity(51.3%),moderate salinity(29.0%),and high salinity(2.0%).De

关键词： irrigation groundwater level salinity soil salinization salt balance uzbekistan

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Heat units-based potential yield assessment for cotton production in uzbekistan

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International Journal of Agricultural and Biological Engineering 2021年第6期14卷 137-144页

作者： Gianni Montanaro Vinay Nangia Prasanna Gowda Shukhrat Mukhamedjanov Azamat Mukhamedjanov Mira Haddad Tulkun Yuldashev Weicheng Wu International Center for Agricultural Research in the Dry Areas(ICARDA) Rabat InstitutsRue Hafiane CherkaouiRabatMorocco Forage and Livestock Production Research Unit USDA-ARS Grazinglands Research LaboratoryEl RenoOK 73036USA Scientific-Information Center of the Interstate Coordination Water Commission of the Central Asia(SIC ICWC) TashkentUzbekistan International Water Management Institute TashkentUzbekistan Key Laboratory of Digital Land and Resources East China Institute of TechnologyNanchang 330013China

Cotton yields in uzbekistan are significantly lower than those in similar agro-climatic regions,requiring the estimation of crop potential and baseline yield to track progress of production enhancement *** current study estimated potential cotton development and baseline yield(maximum given no production constraints)using total heat units(THU)and potential cotton yield(PCY),*** were based on heat units(HU)for a 30-year(1984-2013)***-term average THU and PCY,as well as PCY at three different exceedance probabilities(p=0.99,p=0.80,and p=0.75),were calculated for 21 selected weather stations across cotton-growing areas of *** confirmation that the current planting date(April 15)is optimal,a comparison of THU with the accepted cotton production cutoff threshold(1444°C)suggested that areas with lower elevations and latitudes are more appropriate for cotton *** gap analysis(relative difference between long-term average PCY and actual yields)confirmed that uzbekistan cotton production is below potential,while the spatial distribution of yield gaps outlined where efforts should be *** near the stations of Nukus,Kungrad,Chimbay,and Syrdarya should be further investigated as benefit/cost ratio is highest in these areas.A comparison between state-set yield targets and PCY values,taking into account climatic variability,suggested that all areas except Jaslyk,Nurata,and Samarkand have safe,appropriate *** results present a starting-point to aid in strategic actions for uzbekistan cotton production improvement.

关键词： cotton potential cotton yield yield gap heat unit uzbekistan agriculture climatic variability target

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Young People's Perception on Forest Food Consumption between China and uzbekistan

Young People's Perception on Forest Food Consumption between...

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作者： Makhliyo Shadibekova 西北农林科技大学

学位级别：硕士

Forests play an irreplaceable role in human *** resources provide a source of nutrient-rich food for one billion people by providing about 20% of proteins in the diet across the *** forest foods has already been popular in the cities and often represents well-adapted interactions between human perceptions and ***,the perception and attitude towards the forest food were not deeply understood by young people who are always curious or fond of trying new things and represent the *** this study,we tested the young people's perceptions of forest food consumption in two different cultures as well as the important contributions of the forest food to dietary *** examined youth attitudes toward consuming the wild forest products through an online survey which was conducted among the young people from two research sites *** Agriculture and Forestry University,China(Shaanxi Province,Yangling District)and Tashkent State of Agrarian University,located in Toshkent,uzbekistan.A total of 169 respondents participated in the study,78 from China and 91 from *** finding of research work revealed that young peoples from both countries thought that forest food are healthy and safe for ***,more than 50% of respondents from both the countries perceived that forest food are highly nutritious and preferred to eat it as organic *** the other hand,less than 40% of respondents from both countries recorded that forest food are not essential for *** from both countries also agreed on the multi-functionality of forest food such as rural poverty alleviation,as a source of income,as an alternative occasional food,and as a dietary supplement and medicinal *** of the study also revealed that young people who did not participate or have a negative perception about forest food were either lack of knowledge,limitations or some regulations that limited their access to forest *** research

关键词： Forest food perception young people non-timber forest product(NTFPs) uzbekistan China

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The Influence of uzbekistan's New Economic Policy on China-uzbekistan Cooperation

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经济管理学刊（中英文版） 2020年第1期9卷 1-7页

作者： Jiawan Zhou Yufan Xu SILC Shanghai UniversityShanghai

In December 2016,with the change of President uzbekistan,its policies and systems have undergone tremendous *** article will focus on the specific content of FDI system,tax policy and exchange rate policy in uzbekistan's economic *** the“Ohangaron Green City”project and the trade volume between Xinjiang and Central Asia as an example,this paper analyzes its positive impact on China-uzbekistan cooperation and China-uzbekistan in terms of prospects.

关键词： uzbekistan New Economic Policy China-uzbekistan Cooperation

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Supporting Innovation Through a Mechanism of Accelerated Depreciation in the Republic of uzbekistan

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Economics World 2015年第1期3卷 31-46页

作者： Francisco Jesfls Ferreiro Seoane Manuel Octavio Del Campo Villares Khaydarov Ravshan Rahmonovich Zaynalov Jahongir Rasulovich University of Santiago de Compostela A Corufia Spain University of A Corufia A Comfia Spain Dublin Institute of Technology Dublin Ireland Samarkand Institute of Economics and Services Samarkand Republic of Uzbekistan

The state plays a paramount role in the development of the national economy. In this development process, the state with direct levers, using the available tools as state financial support, banks systems, and tax policy, can provide incentives to identify areas for managing business entities. Obviously, one of the main levers of the state policy is a tax policy. Tax policy plays a crucial role in supporting innovation activities, which in turn provide sustainable economic growth for both the economic entities and the state. Whereas, due to guaranty of sustainable production line in the market economy, the economic entity always needs additional financial resources that ensure the renewal of fixed assets. The present paper focuses on the variation of calculations of the depreciation fund in the Republic of uzbekistan. Regarding to both the tax rates and interval of the residual value of fixed assets, without attracting financial flows, the economic entities can update fixed assets, which on the same time increases the tax payments to the state budget in case of uzbekistan.

关键词： tax depreciation fund variation fixed assets business entities uzbekistan

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State of Local Populations of Aegilops triuncalis L. in uzbekistan

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American Journal of Plant Sciences 2023年第11期14卷 1305-1315页

作者： Mamatkasimov T. Odilbek Abduraimov S. Ozodbek Maxmudov V. Azizbek Mavlanov J. Bekzod Allamurotov L. Akmal Institute of Botany Academy Science of Republic of uzbekistan Tashkent Uzbekistan

The genus Aegilops L. is considered one of the important representatives of the wild relative of cultivated plants. The article presents the place of Aegilops triuncialis L. in plant communities and the status of populations in the flora of uzbekistan. The research was carried out in various botanical and geographical regions of uzbekistan during 2021-2023 years. During the research, the existing literature and geobotanical records, samples stored in the Institute of Botany (TASH) fund, and data on the GBIF international website were analyzed. Based on literary sources, more than 100 local points were recorded. The vitality structure of 11 cenopopulations was studied during field research. Various abiotic and biotic factors influencing the state of populations were analyzed. The main cenopopulations of the species were observed to spread in various grassy shrubland communities.

关键词： Aegilops triuncalis L. uzbekistan Population Distribution Flora Herbarium TASH

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Adaptive Features of the Leaf of <i>Juno vicaria</i>(Vved.) T. Hall &Seisums in Different Ecological Conditions of uzbekistan

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American Journal of Plant Sciences 2019年第6期10卷 947-957页

作者： Nargiza K. Rakhimova Guljan M. Duschanova Sodikjon Kh. Abdinazarov Eldor E. Temirov Sobitjon S. Nosirov Ismat N. Samadov Laboratory Anatomy and Cytoembryology of the Tashkent Botanical Garden Named after Academician F.N. Rusanov Institute of Botany of the Academy of Sciences Tashkent Uzbekistan

The anatomical structure of the leaf of the Central Asian endemic species of Juno vicaria, growing in two different ecological conditions (Baysun Mountains of Surkhandary region and Tashkent Botanical Garden of uzbekistan) was analyzed and diagnostic signs were determined. Also identified are adaptive mesomorphic and xeromorphic signs from an environmental point of view. A species that grows in natural habitat is dominated by more xeromorphic signs: a thickened outer wall of the epidermis;numerous epidermal, spongy cells;submerged stomata;small, multi-row sclerenchymal and collenchymal cells, which indicate a more xeromorphic and adaptability, as well as the wide distribution of this species to the natural growing conditions. In a species growing under the conditions of introduction of the Tashkent Botanical Garden, more mesomorphic features predominate: thin-walled, large, few epidermal, spongy cells;not immersed stomata;large non multi-row sclerenchymal and collenchymal cells, which show that the species is adapted to altered habitat conditions.

关键词： Anatomy Leaf J. vicaria Surkhandarya Region Baysun Mountains Introduction Tashkent Botanical Garden uzbekistan

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Present-Day Japan’s Economic Diplomacy Toward uzbekistan and Its Development

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Asian Journal of Middle Eastern and Islamic Studies 2022年第2期16卷 243-263页

作者： Zijing Gao Guohui Li Institute of International Studies Shandong UniversityWeihaiChina

Located in Central Asia connecting Eurasia,uzbekistan not only occupies an important geographical position,but also has abundant energy resources,which makes it Japan’s important economic and diplomatic target country in Central *** the unfolding of the new century,Japan’s economic diplomacy with uzbekistan has gone through several stages of development,from initial contact to gradual maturity,and has been undergoing twists and *** Shinzo Abe came to power for the second time in 2012,Japan’s economic diplomacy with uzbekistan has deepened significantly,showing more distinct characteristics of changes,including the substantial increase of the amount of aid to the Uzbek government,attaching importance to bilateral economic and trade cooperation,and flexibly utilising the‘Central AsiatJapan’regional cooperation *** strategic considerations behind these changes and adjustments are to deeply participate in the regional cooperation in Central Asia by building a bilateral economic and trade relationship network,ensure the security of energy and resource supply in the post-pandemic era,realise the strategy of becoming a great power,and balance the forces of foreign powers.

关键词： Japan uzbekistan economic diplomacy ODA Central Asia

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Bioecological Characteristics and Natural Resources of <i>Rhaponticum integrifolium</i>in uzbekistan

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American Journal of Plant Sciences 2019年第5期10卷 850-865页

作者： Alieva Namuna Kokand State Pedagogical Institute Kokand Uzbekistan

The large life cycle Rhaponticum integrifolium in natural populations (Qashqadaryo, uzbekistan) was studied. Duration of before generative, generative and senile periods of Rhaponticum integrifolium is 2 - 5, 8 - 10 and 2 - 4 years respectively. The beginning of phenophases depends on the height of the terrain above sea level: raising the terrain from 400 to 1500 m leads to a delay in the onset of phenophases. Age states of Rhaponticum integrifolium in different ecological and phytogenetic conditions were revealed. Updated distribution of detected participation of vegetation and the raw Rhaponticum integrifolium in uzbekistan, describes the dynamics of the contents ecdysteroids in the periods of vegetation. At the same time, a map of the species area in Central Asia was made and the term of its phytomass recovery under different operating modes of thickets was determined.

关键词： Rhaponticum integrifolium Ecdysteroids Ontogenesis Seed Production Yield Reserves in uzbekistan

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Present problems of water management and agrarian reforms in uzbekistan

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Agricultural Sciences 2012年第4期3卷 524-530页

作者： Nasirjon Yusupov Sherzod Muminov Ilkhom Ibragimov Boris Gojenko Scientific Information Center of Interstate Coordination Water Commission of Central Asia Tashkent Uzbekistan

The agriculture of uzbekistan always played the important role in economy and in social life of the country. In spite of the fact that new branches of production have been created in the last years, and much higher rates the industry and service sphere were developed, the agriculture remains the one of leading directions and takes the important place in gross national product production. Its role is connected also with that it is the supplier of raw materials for quickly developing and demanded branches of light and food industry, and by that the considerable part of Uzbek population lives in rural areas and this or another ways connected with agrarian production. However, for the further development of this branch there are a number of barriers. From them the limitation of water resources and reclamation condition of the lands as well as the food security achieving are the main.

关键词： uzbekistan Agriculture Water Management Agrarian Reforms

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