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Light intensity and hydrogel soil amendment differentially affect growth and photosynthesis of successional tree species

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Journal of Forestry Research 2023年第1期34卷 257-268页

作者： Léo Vieira Leonel Fabrício de Oliveira Reis Fábio Afonso Mazzei Moura de Assis Figueiredo Tiago Massi Ferraz Sebastiao de Oliveira Maia Júnior Patrick Costa Silva Jailma Ribeiro de Andrade Graduate Program in Agroecology State University of MaranhaoAv.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil State University of Maranhao Av.Lourenco Vieira da Silva1000Jardim Sao CristovaoSao LuísMaranhao 65055-310Brazil Graduate Program in Agriculture and Environment State University of MaranhaoPraca Goncalves Diass/nCentroBalsasMaranhao 65800-000Brazil

Global climate changes have increased temperatures,radiation indexes,and consequently,irregularities in rainfall in mainly tropical countries,considerably hindering plant establishment in recovering degraded *** objective of this study was to evaluate the growth and physiological characteristics of one species of each successional group:pioneer,secondary,and climax when subjected to different light intensities and hydrogel as a soil conditioner during rainy and dry *** experiment was conducted in the ecotone between Brazil’s two largest biomes,the Cerrado and the Amazon in the State of Maranh?*** parameters consisted of three species:Guazuma ulmifolia Lam.(pioneer),Astronium fraxinifolium Schott(secondary),and Cariniana rubra Gardner ex Miers(climax).There were two light intensities:70%and 100%,and two planting conditions:with and without soil conditioner(hydrogel).Gas exchanges were higher during the rainy season;the pioneer and secondary species had greater heights and photosynthetic rates in the dry period;the climax species had the lowest gas exchange and lowest recovery as rainfall *** pioneer and secondary species showed higher physiological plasticity,denoting better adaption to environments with high *** improved the photosynthetic performance of these species in the dry season and in areas with 100%sunlight.

关键词： Irradiance Hydrogel Photosynthetic efficiency Physiological plasticity

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Geoinformation applications for monitoring protected areas in Lebanon 9

Geoinformation applications for monitoring protected areas i...

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9th International Conference on Remote Sensing and Geoinformation of the environment, RSCy 2023

作者： Mitri, George Bechara, Joseph Stephan, Jean Naimeh, Anna Mckenna, Maher Choueiter, Dominique Land and Natural Resources Program Institute of the Environment University of Balamand Lebanon Lebanon Lebanon Reforestation Initiative Jdeideh Lebanon Faculty of Sciences Lebanese University Fanar Lebanon Beirut Lebanon

ISBN: (纸本)9781510668225

Monitoring protected areas (PAs) at the national level is an important step towards the assessment and acknowledgement of the ecological, patrimonial, and cultural national heritage. In this context, this work aimed at developing a geoinformation-based approach to inventory the environmental state of existing national PAs. The specific objectives were to 1) map all existing PAs and those in pipeline, 2) propose new PAs based on field-based and other geospatial data, 3) establish a remote sensing-based monitoring plan and 4) assess the contribution of PAs to national targets especially those linked to international conventions of relevance. The work resulted in a comprehensive geo-spatial database of PAs under each category of protection. Topographic, biophysical, biotic and administrative baseline maps were produced. In addition, maps of environmental risks were generated using multi-source satellite remote sensing imagery and geographic information system data. Consequently, landscape ecology was investigated in function of existing and proposed PAs. The monitoring plan was developed by setting a number of criteria and indicators most of which can be assessed through satellite imagery. Eventually, the contribution of existing PAs to national targets was investigated for those related to Lebanon's Nationally Determined Contributions under the United Nations Framework Convention on Climate Change, the national biodiversity strategic action plan under the Convention on Biological Diversity and the land degradation neutrality under the United Nations Convention to Combat Desertification. Overall, the addressed geoinformation applications served as essential tools for a standardized use by managers and decisionmakers especially in countries with limited resources for monitoring their PAs. © 2023 SPIE.

关键词： Biodiversity

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Disaster literacy among young peatland farmers in Central Kalimantan 4

Disaster literacy among young peatland farmers in Central Ka...

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4th International Conference on Sustainability Science, CSS 2020

作者： Sinta, Dewi Environment Science Program Postgraduate School Universitas Padjadjaran Indonesia

The One Million Hectare Peat Clearing Project (PLG) in Central Kalimantan, designed as a rice granary in 1995, has become the door to ecological disasters on peatlands. Canalization that drains the peatlands excessively has sparked fires over the past 23 years, especially during the long dry season. Given the large losses incurred and the high budget for land fire suppression, pre-disaster management is important, one of which is through the concept of disaster literacy. Disaster literacy in this case is a non-structural mitigation approach that focuses on skills and understanding of disasters to reduce disaster risk. This study aims to see the application of the concept of disaster literacy, especially to young peatland farmers who are directly involved in agricultural management in a broad sense through the various existing literatures. The discussion will cover a lot of local wisdom of the community in managing peatlands in relation to the prevention of peatland fires. © The Authors, published by EDP Sciences, 2021.

关键词： Disasters

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Population growth of two limno-terrestrial Antarctic microinvertebrates in different aqueous soil media

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environmental Science and Pollution Research 2024年第22期31卷 33086-33097页

作者： McCarthy, Jordan S. Brown, Kathryn E. King, Catherine K. Nielsen, Uffe N. Plaisted, Katie Wallace, Stephanie M. N. Reichman, Suzie M. University of Melbourne ParkvilleVIC3010 Australia School of BioSciences University of Melbourne ParkvilleVIC3010 Australia Environmental Stewardship Program Australian Antarctic Division 203 Channel Highway KingstonTAS7050 Australia Hawkesbury Institute for the Environment Western Sydney University Locked Bag 1797 PenrithNSW2750 Australia

Terrestrial microinvertebrates provide important carbon and nutrient cycling roles in soil environments, particularly in Antarctica where larger macroinvertebrates are absent. The environmental preferences and ecology of rotifers and tardigrades in terrestrial environments, including in Antarctica, are not as well understood as their temperate aquatic counterparts. Developing laboratory cultures is critical to provide adequate numbers of individuals for controlled laboratory experimentation. In this study, we explore aspects of optimising laboratory culturing for two terrestrially sourced Antarctic microinvertebrates, a rotifer (Habrotrocha sp.) and a tardigrade (Acutuncus antarcticus). We tested a soil elutriate and a balanced salt solution (BSS) to determine their suitability as culturing media. Substantial population growth of rotifers and tardigrades was observed in both media, with mean rotifer population size increasing from 5 to 448 ± 95 (soil elutriate) and 274 ± 78 (BSS) individuals over 60 days and mean tardigrade population size increasing from 5 to 187 ± 65 (soil elutriate) and 138 ± 37 (BSS) over 160 days. We also tested for optimal dilution of soil elutriate in rotifer cultures, with 20–80% dilutions producing the largest population growth with the least variation in the 40% dilution after 36 days. Culturing methods developed in this study are recommended for use with Antarctica microinvertebrates and may be suitable for similar limno-terrestrial microinvertebrates from other regions. © The Author(s) 2024.

关键词： Population statistics

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Shifting the Paradigm: Nuclear-based Integrated Energy Systems to Achieve Net Zero Solutions

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Bridge 2023年第2期53卷 47-56页

作者： Bragg-Sitton, Shannon M. Boardman, Richard D. Epiney, Aaron S. Integrated Energy & Storage Systems Division Idaho National Laboratory United States Energy & Environment Science & Technology Idaho National Laboratory United States DOE-NE Integrated Energy Systems program Idaho National Laboratory United States

Governments and private industry around the world have established aggressive goals to achieve net zero carbon emissions for the power, industrial, and transportation sectors by 2050. These goals require a sharp paradigm shift in how energy demands are met. Research laboratories and private companies are developing holistic, integrated solutions that seek to efficiently utilize an array of clean energy generation sources to meet the growing demand for heat, steam, and electricity from nonemitting sources. © 2023, National Academy of Sciences. All rights reserved.

关键词： Research laboratories

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The Role of IT Governance in Aligning IT Strategy and Business Strategy for Sustainability in the Era of Disruption 9

The Role of IT Governance in Aligning IT Strategy and Busine...

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9th International Conference on Information Management and Technology, ICIMTech 2024

作者： Lukiyanto, Kukuh Maulana, Fahrizal Jiram, Wilson Rangga Anak Anthony Selano, Elysabet Christy Diandra BINUS Business School Undergraduate Program Bina Nusantara University Entrepreneurship Department Jakarta11480 Indonesia University of Malaysia Sarawak Faculty of Built Environment Malaysia Asosiasi Peneliti Manajemen Adat Indonesia APMAI Surabaya Indonesia

ISBN: (纸本)9798350390025

In an era of disruption characterized by rapid change, IT Governance is an important factor in aligning IT strategy with business strategy to achieve sustainability. This research aims to investigate and analyze the mediating effect of IT capabilities on IT strategic alignment and operational performance, considering the complexity and dynamics of the external environment as well as the internal business processes adopted by the business entity. Using a positive paradigm approach and quantitative methods, this study finds that IT Adoption and IT Assimilation provide different indirect effects. IT adoption plays a key role in establishing strategic alignment of IT and business to improve operational performance, indicating the importance of IT adoption decisions that are aligned with strategy, vision, mission and broader business goals. However, IT assimilation does not directly improve Operational Performance which can create sustainable competitive advantages for business entities. These findings emphasize the importance of effective IT Governance in directing IT investments and strategies to drive alignment, sustainability and resilience amidst the challenges and opportunities offered by an ever-evolving business landscape. The results of this research provide valuable guidance for business leaders and IT professionals in developing and implementing strong IT Governance practices to achieve strategic alignment and sustainability in an era of disruption. © 2024 IEEE.

关键词： Sustainable development goals

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A critical review of the interactions between rhizosphere and biochar during the remediation of metal(loid)contaminated soils

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Biochar 2023年第1期5卷 1481-1513页

作者： Chuanfang Fan Yanshan Cui Qianru Zhang Naiyi Yin Xiaolin Cai Xiangzhou Yuan Sachini Senadheera Yoora Cho Yong Sik Ok College of Resources and Environment University of Chinese Academy of SciencesBeijing 101408China Research Center for Eco-Environment Sciences Chinese Academy of SciencesBeijing 100085China Korea Biochar Research Center APRU Sustainable Waste Management Program&Division of Environmental Science and Ecological EngineeringKorea UniversitySeoul 02841Republic of Korea State Key Laboratory of Efficient Utilization of Arid and Semi-Arid Arable Land in Northern China Institute of Agricultural Resources and Regional PlanningChinese Academy of Agricultural SciencesBeijing 100081China Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education School of Energy and EnvironmentSoutheast UniversityNanjing 210096China

Biochar has a large specific surface area,well-developed pore structure,abundant surface functional groups,and superior nutrient supply capacity,which is widely available and environmentally friendly with its advantages in waste resource utilization,heavy metal(loid)remediation,and carbon *** review focuses on the interactions between biochar(including raw biochar,functional biochar(modified/engineered/designer biochar),and composite biochar)and rhizosphere during the remediation of soil contaminated with heavy metal(loid)s(Pb,As,Cd,Hg,Co,Cu,Ni,Zn,Cr,etc.)and the effects of these interactions on the microbial communities and root exudates(enzymes and low-molecular-weight organic acids(LMWOAs)).In terms of microorganisms,biochar affects the composition,diversity,and structure of microbial communities through the supply of nutrients,provision of microbial colonization sites,immobilization of heavy metal(loid)s,and introduction of exogenous *** regard to root exudates,biochar provides electron transfer support between the microorganisms and exudates,regulates the secretion of enzymes to resist the oxidative stress stimulated by heavy metal(loid)s,ameliorates rhizosphere acidification caused by LMWOAs,and promotes the activity of soil *** roles and mechanisms of biochar on rhizosphere soils are discussed,as well as the challenges of biochar in the remediation of heavy metal(loid)-contaminated soils,and the issues that need to be addressed in future research are foreseen.

关键词： Green and sustainable remediation Sustainability Biochar Soil Root Heavy metal(loid)s

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An Analysis of the Effect of Price and Quality on Customer Buying Patterns: An Empirical Study of iPhone Buyers

International Journal of Interactive Mobile Technologies

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International Journal of Interactive Mobile Technologies 2023年第18期17卷 118-128页

作者： Hamizan, Maisarah Abu, Noor Hidayah Mansor, Mohd Fitri Zaidi, Mohd Azian Sdn. Bhd Penang Malaysia School of Technology Management and Logistics Universiti Utara Malaysia Kedah Malaysia Faculty of Applied and Human Sciences Universiti Malaysia Perlis Kangar Perlis Malaysia Building Surveying Program College of Built Environment Universiti Teknologi MARA Perak Malaysia

Companies make use of various strategies in order to attract new customers, retain existing customers, and differentiate their products from those of their competitors. Apple Inc. is a multinational technology company headquartered in Cupertino, California. The company specializes in consumer devices, software, and online services. Apple is the most valuable firm in the world, the fourth-largest vendor of personal computers by unit sales, and the second-largest producer of mobile phones as of May 2022. The iPhone is a product with a strong reputation. Apple has always maintained product quality and continuously made innovations. The iPhone has a unique design, and in view of that, the model is too expensive compared to other mobile phones. Although the price is expensive, demand for the iPhone still increases from time to time. The aim of this research is to understand the factors behind iPhone purchase decisions. An investigation has been conducted to evaluate the relationship between price and quality on customer buying patterns for an iPhone. This study will adopt quantitative methods, and data collection has been conducted through online questionnaire distribution. The target respondents in this study are STML students, and the overall population of STML was 1645 students;thus, the sample size for the study should be 310 respondents. The cluster sampling technique has been used in this study. In this study, a total of 340 respondents were received, and there are 27 missing values in the data set. However, only 313 respondents are valid for the data analysis. Findings revealed that price and quality have a significant effect on the buying pattern of an iPhone. Lastly, this study discusses the limitations of the study and its conclusion. © 2023 by the authors of this article. Published under CC-BY.

关键词： Sales

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Variational DAG Estimation via State Augmentation With Stochastic Permutations

arXiv

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arXiv 2024年

作者： Bonilla, Edwin V. Elinas, Pantelis Zhao, He Filippone, Maurizio Kitsios, Vassili O'Kane, Terry CSIRO's Data61 Statistics Program KAUST Saudi Arabia CSIRO's Environment

Estimating the structure of a Bayesian network, in the form of a directed acyclic graph (DAG), from observational data is a statistically and computationally hard problem with essential applications in areas such as causal discovery. Bayesian approaches are a promising direction for solving this task, as they allow for uncertainty quantification and deal with well-known identifiability issues. From a probabilistic inference perspective, the main challenges are (i) representing distributions over graphs that satisfy the DAG constraint and (ii) estimating a posterior over the underlying combinatorial space. We propose an approach that addresses these challenges by formulating a joint distribution on an augmented space of DAGs and permutations. We carry out posterior estimation via variational inference, where we exploit continuous relaxations of discrete distributions. We show that our approach performs competitively when compared with a wide range of Bayesian and non-Bayesian benchmarks on a range of synthetic and real datasets. © 2024, CC BY.

关键词： Bayesian networks

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Exploring grid sensitivity in an ice sheet model:A case study of the Amery Ice Shelf

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Advances in Climate Change Research 2024年第6期15卷 1013-1026页

作者： Qian-Xi WANG Teng LI Xiao CHENG Chen ZHAO Lei ZHENG Qi LING School of Geospatial Engineering and Science Sun Yat-sen UniversitySouthern Marine Science and Engineering Guangdong Laboratory(Zhuhai)Zhuhai 519082China Key Laboratory of Comprehensive Observation of Polar Environment(Sun Yat-sen University) Ministry of EducationZhuhai 519082China Australian Antarctic Program Partnership Institute for Marine and Antarctic StudiesUniversity of TasmaniaHobart 7004Australia

The dynamics of the Antarctic ice sheet are key factors affecting global climate *** project future sea level changes,ice sheet models are developed based on a discrete grid system,which profoundly impacts the accuracy of numerical *** comprehensively explore the sensitivity of ice modeling performance to grid resolution,this study focused on the Amery Ice Shelf(AmIS),the largest glacial flow system in east *** ten grid resolutions(nine sets of structured grids ranging from 2 to 30 km and one set of adaptive unstructured grid from 1 to 20 km),we conducted a series of inversion experiments and diagnostic perturbation *** findings reveal a high sensitivity of both inversion parameters,the rate factor and basal slipperiness,as well as Grounding Line Flux(GLF)and Volume Above Floatation(VAF),to the grid *** observed that for the AmIS,grid resolutions coarser than 10 km in our model introduce considerable noise and reduce the ability to capture realistic dynamic ***,we found that the inversion parameters were transferable between grid systems of different resolutions,and the AmIS exhibited a consistent response to idealized collapse scenarios across these grid systems,particularly for grids with a resolution of 10 km or *** study extends the previous ice sheet model intercomparison experiments from synthetic topography to realistic geometry and provides insights for future ice modeling studies on grid systems configurations.

关键词： Ice sheet model Grid sensitivity Amery ice shelf Numerical simulation

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