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Comparative urbanization of birds in China and Europe based on birds associated with trees

Current Zoology 2019年第6期65卷 617-625页

作者： Anders Pape MOLLER Canwei XIA Bo ZHOU Xianli CHE Xingzhi CHE Changzhang FENG Karsten LAURSEN Federico MORELLI Wangming LI Jianping LIU Qing QUAN Min ZHANG Qiang ZHANG Qiangwen ZHAN Laikun MA Haitao WANG Fasheng ZOU Wei LIANG Ecologie Systematique Evolution University Paris-SudCNRSAgroParisTechUniversity Paris-SaclayOrsay CedexFrance Ministry of Education Key Laboratory for Biodiversity and Ecological Engineering College of Life SciencesBeijing Normal UniversityBeijingChina Ministry of Education Key Laboratory for Ecology of Tropical Islands College of Life SciencesHainan Normal UniversityHaikouChina Guangdong Key Laboratory of Animal Conservation and Resource Utilization Guangdong Public Laboratory of Wild Animal Conservation and UtilizationGuangdong Institute of Applied Biological ResourcesGuangzhouChina Institute of Bioscience Aarhus UniversityDenmarkDenmark Faculty of Environmental Sciences Department of Applied Geoinformatics and Spatial PlanningCzech University of Life Sciences PraguePragueCzech Republic Jilin Provincial Engineering Laboratory for Avian Ecology and Conservation Genetics Northeast Normal UniversityChangchunChina

Urbanization effects on living organisms are spatially *** we quantified the abundance of birds per tree in forested urban and rural habitats for 85,829 trees mainly in China and Europe.A population model was based on the assumption that:1)birds have a normally distributed habitat preference;2)an increase in population size linked to the habitat preference;3)a population size dependent on the habitat preference;and 4)the removal of a certain fraction of individuals giving rise to *** tested for large-scale differences in the impact of urbanization on the frequency distribution of the difference in abundance between urban and rural habitats in China and parts of *** difference in the frequency distribution of urban population density of birds in trees minus rural population density of birds in trees in China and Europe was statistically significant suggesting that the abundance of birds differed between trees in urban and rural habitats,but more so in China than in *** hypothesize that more pronounced differences in China than in Europe may have arisen due to the Four Pests Campaign in 1958-1962 that resulted in death of hundreds of millions of birds(mainly tree sparrows Passer monfanus,but also numerous other less common species that were starting to become urbanized around 1960).Species that were less common in 1960 could not sustain reductions in population size in urban areas and hence these species are still rare or absent in urban areas today 60 years later.

关键词： AN0SIM community composition distribution frequency skewness habitat preference human-bird interactions kurtosis sociality

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PALSAR-FBS L-HH Mode and Landsat-TM Data Fusion for Geological Mapping

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Advances in Remote Sensing 2016年第4期5卷 246-268页

作者： Abderrazak Bannari Ali El-Battay Ali Saquaque Abdelhafid Miri Department of geoinformatics Arabian Gulf University Manama Kingdom of Bahrain Managem Mineral ONA Group Twin Center Casablanca Kingdom of Morocco

Characterized by lithological diversity and rich mineral resources, Benshangul-Gumuz National Regional State located in Asosa Zones, Western Ethiopia has been investigated for geological mapping and morpho-structural lineaments extraction using PALSAR (Phased Array type L-band Synthetic Aperture Radar ) Fine Beam Single (FBS) L-HH polarization and Landsat-5 TM (Thematic Mapper ) datasets. These data were preprocessed to retrieve ground surface reflectance and backscatter coefficients. To overcome the geometry acquisition between the two sensors, they were geometrically and topographically rectified using ASTER-V2 DEM. Intensity-Hue-Saturation, directional filters and automatic lineaments extraction were applied on the datasets for lithological units’ discrimination and structural delimitation for potential mineral exploration. The obtained results showed good relationship among the topographic morphology, rock-substrate, structural variations properties, and drainage network. The spectral variations were easily associated with lithological units. Likewise, the morpho-structural information highlighted in the PALSAR image was visible without altering the radiometric integrity of the details in TM bands through the fusion process. Moreover, predominant lineaments directions trending NE-SW, NS, and NW-SE were identified. Results of this study highlighted the importance of the PALSAR FBS L-HH mode and TM data fusion to enhance geological features and lithological units for mineral exploration particularly in tropical zones.

关键词： Geology Mineral Exploration Lineaments Extraction Data Fusion Intensity-Hue-Saturation Mapping Landsat-TM PALSAR-FBS L-HH Polarization ASTER DEM

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Food preferences by birds using bird-feeders in winter： a large-scale experiment

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Avian Research 2018年第2期9卷 157-162页

作者： Piotr Tryjanowski Anders Pape Moiler Federico Morelli Piotr Indykiewicz Piotr Zduniak Lukasz Myczko Institute of Zoology Poznarn University of Life Sciences Wojska Polskiego 71C 60-62S Poznan Poland Ecologie Systematique Evolution Universite Paris-Sud CNRS AgroParisTech Universite Paris-Saclay 91405 Orsay Cedex France Department of applied geoinformatics and Spatial Planning Facult of Environmental Sciences Czech University of Life Sciences Prague Kamycka 129 16500 Prague 6 Czech Republic Department of Zoology and Landscaping University of Technology and Life Sciences Ks. A. Kordeckiego 20 85-225 Bydgoszcz Poland Department of Avian Biology and Ecology Faculty of Biology Adam Mickiewicz University in Poznah Umultowska 89 61-614 Poznan Poland

Background: Intentional winter bird feeding in gardens is one of the most common interactions between birds and humans. Because feeding may have both desired effects(provisioning of nutritious food for under-nourished birds) and undesired effects(favouritism of competitively superior species, transmission of disease), management of supplementary sites should be optimized from an ecological and conservation perspective. Therefore, the main aim of this study was to experimentally test winter food preferences of birds, with underlying potential influence of habitat(rural vs. urban) on realised food preferences ***: We conducted an experimental analysis of food preferences of wintering birds by provided bird-feeders in urban and rural environments across Poland. Data were collected twice during winter 2013–2014 across Poland, in total with 80 experimental ***: Sunflower seeds were the most preferred food supplement both in urban and rural habitats, significantly more exploited than any other food simultaneously available in feeders(animal fat, millet seed and dry fruits of rowanberry). However, no significant differences were recorded between urban and rural habitats in use of ***: The degree of use of a particular type of food at bird-feeders depended on the overall use of food in a bird-feeder—consumption of each of the four types of food was significantly positively correlated with that of the others, and it was positively correlated with the number of birds observed at the feeders.

关键词： Bird Food preferences Human-animal interactions Supplementary food Winter

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Modelling Orthometric Heights from a Combination of Ellipsoidal Heights and Gravimetric Geoid Model in Rivers State, Nigeria

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International Journal of Geosciences 2020年第4期11卷 184-196页

作者： Kurotamuno P. Jackson Elochukwu C. Moka Department of Surveying and Geomatics Rivers State University Port Harcourt Port Harcourt Nigeria Department of geoinformatics and Surveying University of Nigeria Enugu Campus Enugu Nigeria

Many applications in geodesy, hydrography and engineering require geoid-related heights. Spirit leveling which is the traditional means of obtaining geoid- or mean sea level-related heights is slow, time-consuming and costly. Global Navigation Satellite Systems (GNSS) offer faster and relatively cheaper way of obtaining geoid-related heights when geoidal undulation is applied to ellipsoidal heights. However, difficulties involved in determining acceptable geoid height have seriously hampered the application of GNSS for leveling in Rivers State, thus necessitating the need to develop an acceptable geoid model which will serve as a means of conversion of GNSS-delivered ellipsoidal heights to their orthometric heights equivalent. In pursuance of this objective, a detailed gravimetric geoid has been evaluated for Rivers State, Nigeria. The computation of the geoid was carried out by the traditional remove-restore procedure. The Earth Geopotential Model 2008 (EGM08) was applied as the reference field for both the remove and restore parts of the procedures;spherical Fast Fourier Transform (FFT) was employed for the evaluation of the Molodenskii’s integral formula for the height anomaly, (ζ) to yield the quasi-geoid;while the Residual Terrain Modelling (RTM) was done by prism integration. The classical gravimetric geoid over Rivers State was obtained from the rigorously evaluated quasi-geoid by adding the quasi-geoid to geoid (N?- ζ) correction it. The minimum and maximum geoid height values are 18.599 m and 20.114 m respectively with standard deviation of 0.345 m across the study area. Comparison of the gravimetric geoidal heights with the GPS/Leveling-derived geoidal heights of 13 stations across Rivers State, Nigeria showed that the absolute agreement with respect to the GPS/leveling datum is generally better than 7 cm root mean squares (r.m.s) error. Results also showed that combining both GPS heights and the computed Rivers State geoid model can give orthometric heigh

关键词： Geoid Modelling Remove-Compute-Restore Fast Fourier Transform Residual Terrain Model Ellipsoidal Heights Orthometric Heights

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A novel solution for outlier removal of ICESat altimetry data： a case study in the Yili watershed, China

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Frontiers of Earth Science 2013年第2期7卷 217-226页

作者： Xiaodong HUANG Hongjie XIE Guoqing ZHANG Tiangang LIANG State Key Laboratory of Grassland Agro-ecology System College of Pastoral Agriculture Science and Technology Lanzhou University Lanzhou 730020 China Laboratory for Remote Sensing and geoinformatics Department of Geological Sciences University of Texas at San Antonio San Antonio TX 78249 USA Key Laboratory of Tibetan Environment Changes and Land Surface Processes Institute of Tibetan Plateau Research Chinese Academy of Sciences Beijing 100101 China

Due to the influence of cloud and saturated waveforms, ICESat data contain many contaminated elevation data that cannot be directly used in examining surface elevation and change. This study provides a novel solution for removing bad data and getting clean ICESat data for land applications by using threshold values of reflectivity, saturation, and gain directly from ICESat＇s GLAS （Geoscience Laser Alteimeter System） 01, 05, and 06 products. It is found that each laser campaign needs different threshold compositions to assure qualified ICESat data and that bad data removal rates range from 9.6% （laser 2A） to 62.3% （laser 2B） for the test area in the Yili watershed, China. These thresholds would possibly be used in other regions to extract qualified ICESat footprints for land applications. However, it is recommended to use the steps proposed here to further examine the transferability of threshold values for other regions of different elevations and climate regimes. As an example, the resulting ICESat data are applied to examine lake level changes of two lakes in the study area.

关键词： ICESat outliers and removal Yili watershed lake level

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Comparative Study among Different Semi-Empirical Models for Soil Salinity Prediction in an Arid Environment Using OLI Landsat-8 Data

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Advances in Remote Sensing 2017年第1期6卷 23-39页

作者： A. El-Battay A. Bannari N. A. Hameid A. A. Abahussain Department of geoinformatics College of Graduate Studies Arabian Gulf University Manama Kingdom of Bahrain Natural Resources and Environment Department College of Graduate Studies Arabian Gulf University Manama Kingdom of Bahrain

Salt-affected soils, caused by natural or human activities, are a common environmental hazard in semi-arid and arid landscapes. Excess salts in soils affect plant growth and production, soil and water quality and, therefore, increase soil erosion and land degradation. This research investigates the performance of five different semi-empirical predictive models for soil salinity spatial distribution mapping in arid environment using OLI sensor image data. This is the first attempt to test remote sensing based semi-empirical salinity predictive models in this area: the Kingdom of Bahrain. To achieve our objectives, OLI data were standardized from the atmosphere interferences, the sensor radiometric drift, and the topographic and geometric distortions. Then, the five semi-empirical predictive models based on the Normalized Difference Salinity Index (NDSI), the Salinity Index-ASTER (SI-ASTER), the Salinity Index-1 (SI-1), the Soil Salinity and Sodicity Index-1 and Index-2 (SSSI-1 and SSSI-2), developed for slight and moderate salinity in agricultural land, were implemented and applied to OLI image data. For validation purposes, a fieldwork was organized and different important spots-locations representing different salinity levels were visited, photographed, and localized using an accurate GPS (σ ≤ ±30 cm). Based on this a priori knowledge of the soil salinity, six validation sites were selected to reflect non-saline, low, moderate, high and extreme salinity classes, descriptive statistics extracted from polygons and/or transects over these sites were used. The obtained results showed that the models based on NDSI, SI-1 and SI-ASTER all failed to detect salinity bounds for both extreme salinity (Sabkhah) and non-saline conditions. In Fact, NDSI and SI-ASTER gave respectively only 35% dS/m and 25% dS/m in extreme salinity validation site, while SI-1 and SI-ASTER indicated 38% dS/m and 39% dS/m in non-saline validation site. Therefore, these three models were deemed inade

关键词： Soil Salinity Spectral Indices Semi-Empirical Models Arid Land Landsat-OLI

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Height estimation from single aerial imagery using contrastive learning based multi-scale refinement network

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International Journal of Digital Earth 2023年第1期16卷 2322-2340页

作者： Wufan Zhao Hu Ding Jiaming Na Mengmeng Li Dirk Tiede Geomatics Section Department of Civil EngineeringFaculty of Engineering TechnologyKU LeuvenBelgium School of Geography South China Normal UniversityGuangzhouPeople’s Republic of China College of Civil Engineering Nanjing Forestry UniversityNanjingPeople’s Republic of China Academy of Digital China(Fujian) Fuzhou UniversityFuzhouPeople’s Republic of China Department of geoinformatics(Z_GIS) Faculty of Digital and Analytical SciencesParis Lodron University of SalzburgSalzburgAustria

Height map estimation from a single aerial image plays a crucial role in localization,mapping,and 3D object *** convolutional neural networks have been used to predict height information from single-view remote sensing images,but these methods rely on large volumes of training data and often overlook geometric features present in orthographic *** address these issues,this study proposes a gradient-based self-supervised learning network with momentum contrastive loss to extract geometric information from non-labeled images in the pretraining ***,novel local implicit constraint layers are used at multiple decoding stages in the proposed supervised network to refine high-resolution features in height *** structural-aware loss is also applied to improve the robustness of the network to positional shift and minor structural changes along the boundary *** evaluation on the ISPRS benchmark datasets shows that the proposed method outperforms other baseline networks,with minimum MAE and RMSE of 0.116 and 0.289 for the Vaihingen dataset and 0.077 and 0.481 for the Potsdam dataset,*** proposed method also shows around threefold data efficiency improvements on the Potsdam dataset and domain generalization on the Enschede *** results demonstrate the effectiveness of the proposed method in height map estimation from single-view remote sensing images.

关键词： Height estimation aerial imagery digital surface models contrastive learning local implicit constrain

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Gully erosion mapping susceptibility in a Mediterranean environment: A hybrid decision-making model

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International Soil and Water Conservation Research 2024年第2期12卷 279-297页

作者： Sliman Hitouri Mohajane Meriame Ali Sk Ajim Quevedo Renata Pacheco Thong Nguyen-Huy Pham Quoc Bao Ismail ElKhrachy Antonietta Varasano Geosciences Laboratory Department of GeologyFaculty of SciencesUniversity Ibn TofailKenitra14000Morocco Construction Technologies Institute National Research Council of ItalyPolo Tecnologico di San Giovanni a Teduccio80146NapoliItaly Department of Geography Faculty of ScienceAligarh Muslim University(AMU)AligarhUP202002India Earth Observation and geoinformatics Division National Institute for Space Research(INPE)Sao Jose dos CamposSao Paulo12227010Brazil Centre for applied Climate Sciences University of Southern QueenslandToowoomba4350QLDAustralia Faculty of Natural Sciences Institute of Earth SciencesUniversity of Silesia in KatowiceBedzinska street 6041-200SosnowiecPoland College of Engineering Civil Engineering DepartmentNajran UniversityNajran66291Saudi Arabia ITC-CNR Construction Technologies InstituteNational Research Council70124BariItaly

Gully erosion is one of the main natural hazards,especially in arid and semi-arid regions,destroying ecosystem service and human ***,gully erosion susceptibility maps(GESM)are urgently needed for identifying priority areas on which appropriate measurements should be ***,we proposed four new hybrid Machine learning models,namely weight of evidence-Multilayer Perceptron(MLP-WoE),weight of evidence–K Nearest neighbours(KNN-WoE),weight of evidence-Logistic regression(LR-WoE),and weight of evidence-Random Forest(RF-WoE),for mapping gully erosion exploring the opportunities of GIS tools and Remote sensing techniques in the El Ouaar watershed located in the Souss plain in *** of the developed models are composed of the dependent(i.e.,gully erosion points)and a set of independent *** this study,a total of 314 gully erosion points were randomly split into 70%for the training stage(220 gullies)and 30%for the validation stage(94 gullies)sets were identified in the study area.12 conditioning variables including elevation,slope,plane curvature,rainfall,distance to road,distance to stream,distance to fault,TWI,lithology,NDVI,and LU/LC were used based on their importance for gully erosion susceptibility *** evaluate the performance of the above models based on the following statistical metrics:Accuracy,precision,and Area under curve(AUC)values of receiver operating characteristics(ROC).The results indicate the RF-WoE model showed good accuracy with(AUC=0.8),followed by KNN-WoE(AUC=0.796),then MLP-WoE(AUC=0.729)and LR-WoE(AUC=0.655),*** erosion susceptibility maps provide information and valuable tool for decision-makers and planners to identify areas where urgent and appropriate interventions should be applied.

关键词： watershed susceptibility mapping

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Digital earth:yesterday,today,and tomorrow

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International Journal of Digital Earth 2023年第1期16卷 1022-1072页

作者： Alessandro Annoni Stefano Nativi ArzuÇöltekin Cheryl Desha Eugene Eremchenko Caroline M.Gevaert Gregory Giuliani Min Chen Luis Perez-Mora Joseph Strobl Stephanie Tumampos International Society for Digital Earth BeijingPeople’s Republic of China National Research Council RomeItaly University of applied Sciences and Arts Northwestern Switzerland FHNW School of EngineeringInstitute of Interactive Technologies IITBrugg-WindischSwitzerland Nathan Campus Griffith UniversityCities Research InstituteBrisbaneAustralia Lomonosov Moscow State University MoscowRussia Department of Earth Observation Science University of TwenteTwenteThe Netherland Institute for Environmental Sciences/enviroSPACE University of GenevaGenevaSwitzerland Key Laboratory of Virtual Geographic Environment(Ministry of Education of PRC) Nanjing Normal UniversityNanjingPeople’s Republic of China Cities Research Institute Nathan CampusGriffith UniversityBrisbaneAustralia Department of geoinformatics University of SalzburgSalzburgAustria Chair of Remote Sensing Technology Technical University of MunichMunichGermany Big Geospatial Data Management Technical University of MunichMunichGermany

The concept of Digital Earth(DE)was formalized by Al Gore in *** that time the technologies needed for its implementation were in an embryonic stage and the concept was quite *** then digital technologies have progressed significantly and their speed and pervasiveness have generated and are still causing the digital transformation of our *** creates new opportunities and challenges for the realization of DE.‘What is DE today?’,‘What could DE be in the future?’,and‘What is needed to make DE a reality?’.To answer these questions it is necessary to examine DE considering all the technological,scientific,social,and economic aspects,but also bearing in mind the principles that inspired its *** understanding the lessons learned from the past,it becomes possible to identify the remaining scientific and technological challenges,and the actions needed to achieve the ultimate goal of a‘Digital Earth for all’.This article reviews the evolution of the DE vision and its multiple definitions,illustrates what has been achieved so far,explains the impact of digital transformation,illustrates the new vision,and concludes with possible future scenarios and recommended actions to facilitate full DE implementation.

关键词： Digital Earth digital transformation sustainable development data governance and ethic citizen empowerment and industry engagement

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Pervasive geo-security - a lightweight triple-A approach to securing distributed geo-service infrastructures

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International Journal of Digital Earth 2014年第5期7卷 373-390页

作者： Bernd Resch Bernhard Schulz Manfred Mittlboeck Thomas Heistracher Research Studio iSPACE Research Studios AustriaSalzburgAustria SENSEable City Laboratory Massachusetts Institute of TechnologyBostonMAUSA Department of Information Technology and Systems Management University of Applied SciencesSalzburgAustria

Security has recently become a major concern in distributed geo-infrastructures for spatial data ***,a lightweight approach for securing distributed low-power environments such as geo-sensor networks is *** first part of this article presents a survey of current security mechanisms for authentication and *** on this survey,a lightweight and scalable token-based security infrastructure was developed,which is tailored for use in distributed geo-web service *** developed security framework comprises dedicated components for authentication,rule-based authorisation and optimised storage and administration of access *** validation purposes,a prototypical implementation of the approach has been created.

关键词： pervasive security distributed geo-service infrastructures triple-A geo-authorisation standardised sensor networks service protection Geographic Information Systems(GIS) geoinformatics spatial data infrastructure Digital Earth Digital Earth Architecture

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