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Site index determination using a time series of airborne laser scanning data

Forest Ecosystems 2025年第1期12卷 93-103页

作者： Maria Åsnes Moan Ole Martin Bollandsås Svetlana Saarela Terje Gobakken Erik Næsset Hans Ole Ørka Lennart Noordermeer Faculty of Environmental Sciences and Natural resource management Norwegian University of Life SciencesÅs1432Norway

Site index(SI)is determined from the top height development and is a proxy for forest productivity,defined as the expected top height for a given species at a certain index *** Norway,an index age of 40 years is *** using bi-temporal airborne laser scanning(ALS)data,SI can be determined using models estimated from SI observed on field plots(the direct approach)or from predicted top heights at two points in time(the height differential approach).Time series of ALS data may enhance SI determination compared to conventional methods used in operational forest inventory by providing more detailed information about the top height *** used longitudinal data comprising spatially consistent field and ALS data collected from training plots in 1999,2010,and 2022 to determine SI using the direct and height differential approaches using all combinations of years and performed an external *** also evaluated the use of data *** of root mean square error obtained from external validation were in the ranges of 16.3%–21.4%and 12.8%–20.6%of the mean fieldregistered SI for the direct approach and the height differential approach,*** were no statistically significant effects of time series length or the number of points in time on the obtained *** assimilation did not result in any substantial improvement in the obtained *** a time series of ALS data did not yield greater accuracies compared to using only two points in time,a larger proportion of the study area could be used in ALS-based determination of SI when a time series was *** was because areas that were unsuitable for SI determination between two points in time could be subject to SI determination based on data from another part of the time series.

关键词： Site index Time series Airborne laser scanning Direct approach Height differential approach Data assimilation

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Magnitude, spatial patterns and drivers of methane fluxes from coastal salt marshes and mangrove forests in China

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Science China Earth Sciences 2025年第3期68卷 850-866页

作者： Yixuan YU Derrick Y.F.LAI Minjie HU Chuan TONG Key Laboratory of Humid Subtropical Eco-geographical Process of Ministry of Education Fujian Normal University School of Geographical Sciences Fujian Normal University department of Geography and resource management The Chinese University of Hong Kong

Methane（CH4） is a highly potent greenhouse gas due to its high radiative forcing and global warming *** the magnitude, spatial patterns, and drivers of CH4emission from wetlands at the regional scale is crucial for formulating suitable strategies to mitigate future climate change. In this study, we synthesized the CH4flux data reported for major plant communities in the coastal salt marshes and mangrove forests in China and produced a spatial map of CH4fluxes from the mangrove sediments and salt marshes in China based on the results of machine learning models. Moreover, we examined the main drivers of CH4flux from these coastal wetlands and estimated the annual CH4emissions from the salt marshes and mangrove forests in different coastal provinces of China using a bottom-up approach. Our results showed that the mean CH4fluxes from the salt marsh and mangrove ecosystems in China were 2.22±0.29 and 2.26±0.55 mg m-2h-1, respectively. Across China, the total annual CH4emission from salt marshes was 31,179.75 Mg CH4a-1, while that from mangroves was 5,533.97 Mg CH4a-1with the sediments contributing to 12.7%(701.64 Mg CH4a-1) of the total efflux. The salt marshes and mangroves in China accounted for 2.75% and 0.14%–0.15% of the global annual CH4emissions from these two ecosystems,respectively. Moreover, we found that CH4emissions from the salt marshes and mangroves could offset the cooling impact arising from net carbon dioxide uptake by 88% and 53%, respectively, over a 100-year time scale. Mean annual temperature, soil moisture, and soil organic carbon content were the main factors controlling CH4emissions from these coastal ***, we found that CH4fluxes from the salt marshes in China decreased with latitude, which implied a possible increase in marsh CH4emission in response to global warming that should be considered carefully when developing nature-based climate solutions to achieve national goals for carbon neutrality.

关键词： Salt marsh Mangrove Methane flux Spatial pattern Driving factors China

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Site index determination using a time series of airborne laser scanning data

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Forest Ecosystems 2025年第01期 93-103页

作者： Maria ?snes Moan Ole Martin Bollands?s Svetlana Saarela Terje Gobakken Erik N?sset Hans Ole ?rka Lennart Noordermeer Faculty of Environmental Sciences and Natural resource management Norwegian University of Life Sciences

Site index (SI) is determined from the top height development and is a proxy for forest productivity,defined as the expected top height for a given species at a certain index *** Norway,an index age of 40 years is *** using bi-temporal airborne laser scanning (ALS) data,SI can be determined using models estimated from SI observed on field plots (the direct approach) or from predicted top heights at two points in time (the height differential approach).Time series of ALS data may enhance SI determination compared to conventional methods used in operational forest inventory by providing more detailed information about the top height *** used longitudinal data comprising spatially consistent field and ALS data collected from training plots in 1999,2010,and 2022 to determine SI using the direct and height differential approaches using all combinations of years and performed an external *** also evaluated the use of data *** of root mean square error obtained from external validation were in the ranges of 16.3%–21.4%and 12.8%–20.6%of the mean fieldregistered SI for the direct approach and the height differential approach,*** were no statistically significant effects of time series length or the number of points in time on the obtained *** assimilation did not result in any substantial improvement in the obtained *** a time series of ALS data did not yield greater accuracies compared to using only two points in time,a larger proportion of the study area could be used in ALS-based determination of SI when a time series was *** was because areas that were unsuitable for SI determination between two points in time could be subject to SI determination based on data from another part of the time series.

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Factors affecting smallholder farmers' adaptive capacity to climate change:A comparative study of Nepal, India, and Bangladesh

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Journal of Geographical Sciences 2025年第2期35卷 359-381页

作者： CHAPAGAIN Prem Sagar BANSKOTA Tibendra Raj SHRESTHA Shobha ZHANG Yili YAN Jianzhong RAI Suresh Chand ISLAM Md Nurul LIU Linshan MANDAL Umesh Kumar PAUDEL Basanta KHANAL Narendra Raj THASINEKU Om Chandra Central department of Geography Tribhuvan University Institute of Geographic Sciences and Natural resources Research CAS College of resource and Environment Southwest University department of Geography Delhi School of Economics University of Delhi department of Geography & Environment Jahangirnagar University Research Center for Educational Innovation and development (CERID) Tribhuvan University

Agriculture, significantly impacted by climate change and climate variability, serves as the primary livelihood for smallholder farmers in South Asia. This study aims to examine and evaluate the factors influencing smallholder farmers' adaptive capacity(AC) in addressing these risks through surveys from 633 households across Nepal, India, and Bangladesh. The findings reveal that AC is influenced by various indicators categorized under eight principal factors. The first three factors, which explain about one-third of the variance in each country,include distinct significant indicators for each nation: in Nepal, these indicators are landholding size, skill-development training, knowledge of improved seed varieties, number of income sources, access to markets, and access to financial institutions; in India, they encompass access to agricultural-input information, knowledge of seed varieties, access to markets, access to crop insurance, changing the sowing/harvesting times of crops, and access to financial services; in Bangladesh, the key factors are access to financial institutions, community cooperation, changing the sowing/harvesting times of crops, knowledge of improved seed varieties,and access to agricultural-input information. Notably, indicators such as trust in weather information, changing sowing/harvesting times of crops, and crop insurance were identified as important determinants of AC, which have been overlooked in previous studies.

关键词： adaptive capacity Bangladesh climate change India Nepal PCA rain-fed agriculture smallholder

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Leveraging Artificial Intelligence to Achieve Sustainable Public Healthcare Services in Saudi Arabia: A Systematic Literature Review of Critical Success Factors

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Computer Modeling in Engineering & Sciences 2025年第2期142卷 1289-1349页

作者： Rakesh Kumar Ajay Singh Ahmed Subahi Ahmed Kassar Mohammed Ismail Humaida Sudhanshu Joshi Manu Sharma department of Health management College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia department of management&Information Systems College of Business AdministrationUniversity of Ha’ilHa’il81451Saudi Arabia department of Public Health College of Public Health and Health InformaticsUniversity of Ha’ilHa’il81451Saudi Arabia School of management Doon UniversityDehradunUttarakhand248001India department of management Studies Graphic Era UniversityDehradunUttarakhand248002India

This review aims to analyze the development and impact of Artificial Intelligence(AI)in the context of Saudi Arabia’s public healthcare system to fulfill Vision 2030 *** is extensively devoted to AI technology deployment relevant to disease management,healthcare delivery,epidemiology,and ***,its AI is culturally sensitive and ethically grounded in *** on the PRISMA framework,an SLR evaluated primary academic literature,cases,and practices of Saudi Arabia’s AI implementation in the public healthcare ***,it categorizes prior research based on how AI can work,the issues it poses,and its implications for the Kingdom’s healthcare *** Saudi Arabian context analyses show that AI has increased the discreet prediction of diseases,resource management,and monitoring outbreaks during mass congregations such as ***,the study outlines critical areas for defining the potential for artificial intelligence and areas for enhancing digital development to support global healthcare *** key themes emerging from the review include Saudi Arabia:(i)the effectiveness of AI with human interaction for sustainable health services;(ii)conditions and quality control to enhance the quality of health care services using AI;(iii)environmental factors as influencing factors for public health care;(iv)Artificial Intelligence,and advanced decision-making technology for Middle Eastern health care *** policymakers,healthcare managers,and researchers who will engage with AI innovation,the review proclaims that AI applications should respect the country’s socio-cultural and ethical practices and pave the way for sustainable healthcare *** empirical research is needed on the implementation issues with AI,creating culturally appropriate models of AI,and finding new applications of AI to address the increasing demand for healthcare services in Saudi Arabia.

关键词： Artificial intelligence public health services sustainability healthcare Saudi Arabia PRISMA

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Spatiotemporal variation and influencing factors of desertification sensitivity on the Qinghai-Xizang Plateau,China

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Journal of Arid Land 2025年第1期17卷 58-73页

作者： PAN Meihui CHEN Qing LI Chenlu LI Na GONG Yifu College of Geography and Environmental Science Northwest Normal UniversityLanzhou 730070China Key Laboratory of resource Environment and Sustainable development of Oasis Northwest Normal UniversityLanzhou 730070China

Due to irrational human activities and extreme climate,the Qinghai-Xizang Plateau,China,faces a serious threat of *** has a detrimental effect on the ecological environment and socioeconomic *** this study,the desertification sensitivity index(DSI)model was established by integrating the spatial distance model and environmentally sensitive area index evaluation method,and then the model was used to quantitatively analyze the spatial and temporal characteristics of desertification sensitivity of the Qinghai-Xizang Plateau from 1990 to *** results revealed that:(1)a general increasing tendency from southeast to northwest was identified in the spatial distribution of desertification *** low-sensitivity areas were mostly concentrated in the Hengduan and Nyaingqêntanglha mountains and surrounding forest and meadow *** high-sensitivity areas were located mainly in the Kunlun and Altun mountains and surrounding decertified *** center of gravity of all types of desertification-sensitive areas moved to the northwest,and the desertification sensitivity showed a decreasing trend as a whole;(2)the area of highly sensitive desertification areas decreased by 8.37%,with extreme sensitivity being the largest change among the sensitivity *** desertification sensitivity transfer was characterized by a greater shift to lower sensitivity levels(24.56%)than to higher levels(2.03%),which demonstrated a declining trend;(3)since 1990,the change in desertification sensitivity has been dominated by the stabilizing type Ⅰ(29.30%),with the area of continuously increasing desertification sensitivity accounting for only 1.10%,indicating that the management of desertification has achieved positive results in recent years;and(4)natural factors have had a more significant impact on desertification sensitivity on the Xizang Plateau,whereas socioeconomic factors affected only localized *** main factors influencing deserti

关键词： desertification sensitivity geodetector gravity center transfer model spatiotemporal change Qinghai-Xizang Plateau

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Technological Innovations for Climate Adaptation and Peacebuilding: A Holistic Approach to resource Conflict and Environmental Challenges

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Open Journal of Applied Sciences 2025年第1期15卷 285-304页

作者： Louis Ekane Besinga Theophilus Nayombe Moto Mukete department of Sociology and Anthropology Faculty of Social and Management Sciences University of Buea Buea Cameroon department of Physical Geography Natural Resource Management and Geo-Information Technology Odessa National University I.I. Mechnikov Odesa Ukraine

The intertwined challenges of climate change, resource scarcity, and conflict require innovative integrated solutions that address both environmental and societal vulnerabilities. Technological innovation offers a transformative pathway for climate change adaptation and peacebuilding, with emphasis on a holistic approach to managing resource conflicts and environmental challenges. This paper explores the synergies between emerging technologies and strategic framework to mitigate climate-induced tensions and foster resilience. It focuses on the application of renewable energy systems to reduce dependence on contested resources, blockchain technology to ensure transparency in climate finance, equitable resource allocation and Artificial Intelligence (AI) to enhance early warning systems for climate-related disaster and conflicts. Additionally, technologies such as precision agriculture and remote sensing empower communities to optimize resource use, adapt to shifting environmental conditions, and reduce competition over scares resources. These innovations with inclusive governance and local capacity-building are very primordial. Ultimately, the convergence of technology, policy, and local participation offers a scalable and replicable model for addressing the dual challenges of environmental degradation and instability, thereby paving the way for a more sustainable and peaceful future.

关键词： Technological Innovation Climate Change Adaptation Peacebuilding Environmental Challenges

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Rivers increasingly warmer:Prediction of changes in the thermal regime of rivers in Poland

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Journal of Geographical Sciences 2025年第1期35卷 139-172页

作者： Mariusz PTAK Teerachai AMNUAYLOJAROEN Mariusz SOJKA department of Hydrology and Water management Adam Mickiewicz UniversityKrygowskiego 1061-680PoznańPoland School of Energy and Environment University of PhayaoPhayao56000Thailand Atmospheric Pollution and Climate Research Unit School of Energy and EnvironmentUniversity of PhayaoPhayao56000Thailand department of Land Improvement Environmental Development and Spatial ManagementPoznańUniversity of Life SciencesPiątkowska 94E60-649PoznańPoland

Emphasis on future environmental changes grows due to climate change,with simulations predicting rising river temperatures *** Poland,which has a long history of thermal studies of rivers,such an approach has not been implemented to *** study used 9 Global Climate Models and tested three machine-learning techniques to predict river temperature *** Forest performed best,with R^(2)=0.88 and lowest error(RMSE:2.25,MAE:1.72).The range of future water temperature changes by the end of the 21st century was based on the Shared Socioeconomic Pathway scenarios SSP2-4.5 and *** was determined that by the end of the 21st century,the average temperature will increase by 2.1°C(SSP2-4.5)and 3.7°C(SSP5-8.5).A more detailed analysis,divided by two major basins Vistula and Odra,covered about 90%of Poland's *** average temperature increase,according to scenarios SSP2-4.5 and SSP5-8.5 for the Odra basin rivers,is 1.6°C and 3.2°C and for the Vistula basin rivers 2.3°C and 3.8°C,*** Vistula basin's higher warming is due to less groundwater input and continental climate *** findings provide a crucial basis for water management to mitigate warming effects in Poland.

关键词： global warming forecasting water temperature Poland

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Role of copper chelating agents: between old applications and new perspectives in neuroscience

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Neural Regeneration Research 2025年第3期20卷 751-762页

作者： Rosalba Leuci Leonardo Brunetti Vincenzo Tufarelli Marco Cerini Marco Paparella Nikola Puvača Luca Piemontese department of Pharmacy-Pharmaceutical Science University of Bari Aldo MoroBariItaly department of Precision and Regenerative Medicine and Jonian Area(DiMePRe-J) Section of Veterinary Science and Animal ProductionUniversity of Bari Aldo MoroBariItaly department of Engineering management in Biotechnology Faculty of Economics and Engineering Management in Novi SadUniversity Business Academy in Novi SadNovi SadSerbia

The role of copper element has been an increasingly relevant topic in recent years in the fields of human and animal health, for both the study of new drugs and innovative food and feed supplements. This metal plays an important role in the central nervous system, where it is associated with glutamatergic signaling, and it is widely involved in inflammatory processes. Thus, diseases involving copper(Ⅱ) dyshomeostasis often have neurological symptoms, as exemplified by Alzheimer's and other diseases(such as Parkinson's and Wilson's diseases). Moreover, imbalanced copper ion concentrations have also been associated with diabetes and certain types of cancer, including glioma. In this paper, we propose a comprehensive overview of recent results that show the importance of these metal ions in several pathologies, mainly Alzheimer's disease, through the lens of the development and use of copper chelators as research compounds and potential therapeutics if included in multi-target hybrid drugs. Seeing how copper homeostasis is important for the well-being of animals as well as humans, we shortly describe the state of the art regarding the effects of copper and its chelators in agriculture, livestock rearing, and aquaculture, as ingredients for the formulation of feed supplements as well as to prevent the effects of pollution on animal productions.

关键词： agriculture Alzheimer's disease chelators copper feed supplements multi-target

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Insight into the bimetallic structure sensibility of catalytic nitrate reduction over Pd-Cu nanocrystals

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Journal of Environmental Sciences 2025年第3期149卷 221-233页

作者： Zhiqiang Zhang Wenhang Li Cailin Zheng Kunyu Chen Heliang Pang Wenxin Shi Jinsuo Lu School of Environmental and Municipal Engineering Xi’an University of Architecture and TechnologyXi’an 710055China Key Laboratory of Northwest Water resources Environment and EcologyMinistry of EducationXian 710055China State Key Laboratory of Urban Water resource and Environment Harbin Institute of TechnologyHarbin 150090China Construction engineering quality and safety supervision center station House and Urban Rural Development Department of AnkangAnkang 725000China College of Urban Construction and Environmental Engineering Chongqing UniversityChongqing 400044China

Catalytic reduction of nitrate over bimetallic catalysts has emerged as a technology for sustainable treatment of nitrate-containing ***,the structure of bimetallic has been much less investigated for catalyst ***,two main types of Pd-Cu bimetallic nanocrystal structures,heterostructure and intermetallic,were prepared and characterized using high-resolution transmission electron microscopy(HRTEM),X-ray diffraction(XRD),and X-ray photoelectron spectroscopy(XPS).The results show that two individual Pd and Cu nanocrystals with a mixed interface exist in the heterostructure nanocrystals,while Pd and Cu atoms are uniformly distributed across the intermetallic Pd-Cu *** catalytic nitrate reduction experiments were carried out in a semibatch reactor under constant hydrogen *** nitrate conversion rate of the heterostructure Pd-Cu nanocrystals supported onα-Al_(2)O_(3),γ-Al_(2)O_(3),SBA-15,and XC-72R exhibited 3.82-,6.76-,4.28-,2.44-fold enhancements relative to the intermetallic nanocrystals,and the nitrogen and nitrite were the main products for the heterostructure and intermetallic Pd-Cu nanocrystals,*** indicates that the catalytic nitrate reduction over Pd-Cu catalyst is sensitive to the bimetallic structures of the catalysts,and heterostructure bimetallic nanocrystals exhibit better catalytic performances on both the activity and selectivity,which may provide new insights into the design and optimization of catalysts to improve catalytic activity and selectivity for nitrate reduction in water.

关键词： Catalytic nitrate reduction Pd-Cu bimetallic catalyst Heterostructure Intermetallic Activity and selectivity

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