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This article describes various opportunities but also constraints to greater crop diversification, and the impact on local sustainability in the Khorezm province of Uzbekistan in the Aral Sea basin. At present, approximately 70% of the area in this study region is sown to irrigated cotton and winter wheat under the so-called state mandate. We present evidence of the benefits of moving away from this approach toward more diversified farming with an increasing area of alternative crops in the selected region. We report on a series of studies that included a) crop suitability screening based on secondary data, b) joint farmer experiments, and c) a mathematical simulation model with the overarching objective to assess potential benefits and constraints for crop diversification. The findings of this long-term, multiyear, and multidisciplinary approach show that greater crop diversity can increase water use efficiency, and secure farm income in dryland areas prone to water scarcity and soil salinity. In additio...

This paper examines for the first time the relationship between CO2 emissions and the consumption of renewable and non-renewable energy in Uzbekistan, spanning the period 1985-2020. The analysis uses the Autoregressive Distributed Lags (ARDL) model to estimate the long-run dynamic multipliers and short-run elasticity coefficients of energy consumption variables. Economic factors, such as GDP, are excluded in the analysis as they may cause multicollinearity problems. The empirical results document that in the short- and long-run, hydropower (renewable) energy consumption negatively impacts CO2 emissions per capita, showing a unidirectional causal effect. As regards with non-renewable energy consumption, natural gas and oil energy consumption have a positive impact on CO2 emissions per capita both in the short and long run. Coal consumption positively impacts CO2 emissions in the short run, while it is negative in the long run. Policy measures to enhance the collection of energy from additional renewable energy sources, in particular hydropower, should be taken into account in order to increase the share of renewable energy, and thus, to compensate non-renewable energy consumption which is the main contributor to CO2 emissions. Moreover, solar and wind energy should be explicitly taken into consideration as an additional renewable energy source, which has the lack of attention by policymakers. Furthermore, policy actions, such as the involvement of the private sector into renewable energy projects and the implementation of effective carbon tax policies, could be further options to reduce CO2 emissions.

Coastal bermudagrass (Cynodon dactylon L.) may be a potentially important source of bio-based energy in the southern US due to its vast acreage. It is often produced as part of a waste management plan with varying nutrient composition and energy characteristics on fields irrigated with livestock wastewater. The objective of this study was to determine the effect of subsurface drip irrigation with treated swine wastewater on both the quantity and quality of bermudagrass bioenergy. The treated wastewater was recycled from an advanced treatment system and used for irrigation of bermudagrass in two crop seasons. The experiment had nine water and drip line spacing treatments arrayed in a randomized complete block-design with four replicates. The bermudagrass was analyzed for calorific and mineral contents. Bermudagrass energy yields for 2004 and 2005 ranged from 127.4 to 251.4MJ ha(-1). Compared to irrigation with commercial nitrogen fertilizer, the least biomass energy density was associated with bermudagrass receiving treated swine wastewater. Yet, in 2004 the wastewater irrigated bermudagrass had greater hay yields leading to greater energy yield per ha. This decrease in energy density of wastewater irrigated bermudagrass was associated with increased concentrations of K, Ca, and Na. After thermal conversion, these compounds are known to remain in the ash portion thereby decreasing the energy density. Nonetheless, the loss of energy density using treated effluent via SDI may be offset by the positive influence of these three elements for their catalytic properties in downstream thermal conversion processes such as promoting a lesser char yield and greater combustible gas formation.

Les montagnes abritent une part considérable de la population humaine. Environ un milliard de personnes vivent dans des zones montagneuses, qui abritent une riche diversité naturelle et socioculturelle. Aujourd'hui, de nombreuses personnes vivant dans des zones montagneuses du monde entier sont confrontées à des changements fondamentaux de leurs conditions de vie culturelles et économiques. Dans le même temps, les communautés de montagne ont défié les environnements difficiles dans le passé en s'adaptant aux conditions naturelles changeantes et en faisant preuve de niveaux remarquables de résilience. Dans cet article de synthèse, nous fournissons un aperçu complet de la littérature scientifique de langue anglaise sur les sujets liés à la résilience dans les zones de montagne sur la base d'une revue systématique de la base de données documentaire Scopus®. Nous proposons un point de départ structuré pour les interactions science-pratique et les activités concrètes basées sur l'action pour soutenir les moyens de subsistance et renforcer la résilience dans les zones de montagne. Nous suggérons que les lacunes existantes en matière de connaissances puissent être comblées en s'appuyant sur les connaissances locales et en co-créant des solutions avec les communautés. De cette façon, nous pouvons renforcer les capacités d'innovation et amortir activement l'impact des crises tout en soutenant la transformation délibérée vers la durabilité et la régénération pour améliorer davantage la résilience. Las montañas son el hogar de una parte considerable de la población humana. Alrededor de mil millones de personas viven en zonas montañosas, que albergan una rica diversidad natural y sociocultural. Hoy en día, muchas personas que viven en zonas montañosas de todo el mundo se enfrentan a cambios fundamentales en sus condiciones de vida culturales y económicas. Al mismo tiempo, las comunidades de montaña han desafiado los entornos hostiles en el pasado al adaptarse a las condiciones naturales cambiantes y mostrar niveles notables de resiliencia. En este documento de revisión, proporcionamos una descripción general completa de la literatura científica en inglés sobre temas relacionados con la resiliencia en áreas montañosas basada en una revisión sistemática de la base de datos de literatura Scopus®. Proponemos un punto de partida estructurado para las interacciones entre la ciencia y la práctica y actividades concretas basadas en la acción para apoyar los medios de vida y fortalecer la resiliencia en las zonas montañosas. Sugerimos que las brechas de conocimiento existentes se pueden abordar confiando en el conocimiento local y cocreando soluciones con las comunidades. De esta manera, podemos crear capacidad innovadora y amortiguar activamente el impacto de las crisis, al tiempo que apoyamos la transformación deliberada hacia la sostenibilidad y la regeneración para mejorar aún más la resiliencia. Mountains are home to a considerable share of the human population. Around a billion people live in mountainous areas, which harbor rich natural and sociocultural diversity. Today, many people living in mountainous areas worldwide face fundamental changes to their cultural and economic living conditions. At the same time, mountain communities have defied harsh environments in the past by adapting to changing natural conditions and showing remarkable levels of resilience. In this review paper, we provide a comprehensive overview of English-language scientific literature on resilience-related topics in mountain areas based on a systematic review of the Scopus® literature database. We propose a structured starting point for science–practice interactions and concrete action-based activities to support livelihoods and strengthen resilience in mountain areas. We suggest that existing knowledge gaps can be addressed by relying on local knowledge and cocreating solutions with communities. In this way, we can build innovative capacity and actively buffer against the impact of crises while supporting deliberate transformation toward sustainability and regeneration to further enhance resilience. الجبال هي موطن لنسبة كبيرة من السكان. يعيش حوالي مليار شخص في المناطق الجبلية، التي تضم تنوعًا طبيعيًا واجتماعيًا ثقافيًا غنيًا. اليوم، يواجه العديد من الأشخاص الذين يعيشون في المناطق الجبلية في جميع أنحاء العالم تغييرات جوهرية في ظروفهم المعيشية الثقافية والاقتصادية. وفي الوقت نفسه، تحدت المجتمعات الجبلية البيئات القاسية في الماضي من خلال التكيف مع الظروف الطبيعية المتغيرة وإظهار مستويات ملحوظة من المرونة. في ورقة المراجعة هذه، نقدم نظرة عامة شاملة على الأدبيات العلمية باللغة الإنجليزية حول الموضوعات المتعلقة بالمرونة في المناطق الجبلية بناءً على مراجعة منهجية لقاعدة بيانات أدبيات Scopus®. نقترح نقطة انطلاق منظمة للتفاعلات بين العلوم والممارسات والأنشطة العملية الملموسة لدعم سبل العيش وتعزيز القدرة على الصمود في المناطق الجبلية. نقترح أنه يمكن معالجة الفجوات المعرفية الحالية من خلال الاعتماد على المعرفة المحلية وإيجاد حلول مشتركة مع المجتمعات. وبهذه الطريقة، يمكننا بناء قدرات مبتكرة والوقاية بنشاط من تأثير الأزمات مع دعم التحول المتعمد نحو الاستدامة والتجديد لزيادة تعزيز المرونة.

Abstract Residual hemp (Cannabis sativa) hurd fibers obtained from hydrothermal, carbonate, and kraft treatments were the resources used to obtain lignocellulosic nanofibers (LCNF) by using an ultra-fine friction grinder. The morphological, crystallinity, and chemical characteristics of the nanocellulose films were carried out using SEM, XRD, EDX and ToF-SIMS. Water barrier properties of the same were measured in terms of water contact angle, water vapor permeability (WVP) and water absorption. The barrier properties were found to be dependent not only on the lignin content and lignin distribution, but also on the film density and porous structure. LCNF films and coatings showed much higher water contact angle (WCA) (80°-102°) than films produced from the bleached CNF. WVP was found to be more dependent on the density of films than lignin content. Overall, LCNF-based films and coatings derived from hemp hurd residual fibers can contribute to a circular economy and sustainability.

The primary aspiration of this paper is to learn about the effects of economic growth, energy consumption, agriculture and irrigation water consumption and agriculture productivity on environmental pollution in five countries of Central Asia. The data cover the period from 1992 to 2020 by applying panel data models, namely the Panel FMOLS, Panel DOLS and Panel ARDL-PMG approaches. The results indicate that there is a positive long-term impact of economic growth, water productivity, energy consumption and electricity production on CO2 emissions while agriculture value added and trade openness have a negative and statistically significant influence on CO2 emissions in Central Asia. Country specific short-run coefficients from Panel ARDL reveal that energy consumption is the main driver for rise in the level of CO2 emissions in the countries under the study. Indeed, country level analysis generates unique nexus correlation among agriculture, energy and environmental degradation in each country of Central Asia.

This research addresses three major problems currently confronting our globe. These problems are the pending energy crisis, the environmental degradation due to waste and the environmental degradation due to the continuous generation of greenhouse gas emissions.

The paper examines ecotourism in the Aral Sea region of Uzbekistan, an area with a fragile environment that has faced ecological crises and requires careful sustainable development. It looks at the supply side of ecotourism by examining Uzbekistani tour operators’ awareness of benefits derivable from promoting ecotourism in the region, and the local tourism industry’s motives to engage in this development. As a research methodology, the results of an exploratory survey of travel agents and tour operators highlight the policy-making and management interventions required for the more effective promotion and development of ecotourism in the Aral Sea region. The paper analyzes the challenges and opportunities associated with promoting ecotourism activities in the Aral Sea region in pursuit of sustainable regional development, improved livelihood for the local population, employment opportunity and income source creation, and enriched service exports. Key findings from the study show that stakeholders are aware of ecotourism’s value and are motivated to implement ecotourism in the region, but they have limited experience, competence, and international networks to promote and market ecotourism products and services. Local stakeholders have raised the issue that infrastructure development and access to microfinance are their greatest needs from local authorities in Uzbekistan.