Revista Brasileira de Ciências Ambientais最新文献

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Methods to analyze spatio-temporal rainfall variability: application to the Pajeú river basin, Pernambuco, Brazil 降雨时空变化分析方法——以巴西伯南布哥省Pajeú河流域为例
Revista Brasileira de Ciências Ambientais Pub Date : 2021-10-19 DOI: 10.5327/z21769478866
Janaina Maria Oliveira de Assis, Athos Farias Menezes, Werônica Meira De Souza, M. Sobral
{"title":"Methods to analyze spatio-temporal rainfall variability: application to the Pajeú river basin, Pernambuco, Brazil","authors":"Janaina Maria Oliveira de Assis, Athos Farias Menezes, Werônica Meira De Souza, M. Sobral","doi":"10.5327/z21769478866","DOIUrl":"https://doi.org/10.5327/z21769478866","url":null,"abstract":"This paper addresses a methodology for analyzing spatio-temporal rainfall variability as a tool to support action planning that could mitigate negative impacts and reduce conflicts over water use in the Pajeú river basin, located in the semi-arid region of the state of Pernambuco. We used daily rainfall data from 11 rainfall stations, between 1964 and 2016, provided by the Pernambuco Water and Climate Agency (Agência Pernambucana de Águas e Clima — APAC) and the National Water Agency (Agência Nacional de Águas — ANA). This analysis employed the RClimDex software to calculate rainfallrelated climate extremes indices, aiming at monitoring and detecting climate changes and alterations in the regional rainfall pattern. The results indicated a change in the rainfall pattern in the Pajeú river basin, and all climate indices obtained converge toward the increase in water scarcity in the area, contributing to the recurrent droughts that impact the region.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128349191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Participatory process for mapping socio-environmental determinants of health by community agents: Contributions to urban management and planning 社区人员绘制健康的社会环境决定因素的参与性进程:对城市管理和规划的贡献
Revista Brasileira de Ciências Ambientais Pub Date : 2021-10-14 DOI: 10.5327/z217694781035
Renata Ferraz de Toledo, Ana Paula Koury, C. M. Carvalho, Francisco Nilson Paiva dos Santos
{"title":"Participatory process for mapping socio-environmental determinants of health by community agents: Contributions to urban management and planning","authors":"Renata Ferraz de Toledo, Ana Paula Koury, C. M. Carvalho, Francisco Nilson Paiva dos Santos","doi":"10.5327/z217694781035","DOIUrl":"https://doi.org/10.5327/z217694781035","url":null,"abstract":"Studies about socio-environmental determinants are recognized as important to better understand the factors that influence health and quality of life, and how they operate to generate inequalities. This article reports the mapping of socio-environmental determinants of health, carried out by community health agents from the community of Paraisópolis, the second-largest slum in the city of São Paulo (state of São Paulo), seeking to analyze potential contributions of this participatory process to urban management and planning. As part of an action research study and following the stages of Paulo Freire’s Research Itinerary (Culture Circles), the mapping was carried out by integrating the Talking Map technique with Geographic Information Systems (GIS), in what has been called Participatory GIS or Geographic Information Systems with Social Participation (PGIS). Positive aspects were recognized and addressed by community agents, as well as several situations of socio-environmental vulnerability as a result of the agglomerated nature of the place, directly related to urban management and planning needs. This shows that, through a participatory mapping process, citizens cannot only better identify, but also more effectively communicate their needs and qualify intervention strategies in the territory. Therefore, it is possible to address the residents’ priorities more representatively, especially in places where traditionally marginalized social groups live. And also, community health agents, who play a central role in this research process because they live and work in the same place, are fundamental to boost, mobilize, and support the complex aspects involved, both in Primary Health Care, as well as in urban management and planning.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"201 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116165706","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Evaluation of generalized extreme value and Gumbel distributions for estimating maximum daily rainfall 估计最大日降雨量的广义极值和Gumbel分布的评价
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-10 DOI: 10.5327/z217694781015
Á. J. Back, Fernanda Martins Bonfante
{"title":"Evaluation of generalized extreme value and Gumbel distributions for estimating maximum daily rainfall","authors":"Á. J. Back, Fernanda Martins Bonfante","doi":"10.5327/z217694781015","DOIUrl":"https://doi.org/10.5327/z217694781015","url":null,"abstract":"Extreme rain events can cause social and economic impacts in various sectors. Knowing the risk of occurrences of extreme events is fundamental for the establishment of mitigation measures and for risk management. The analysis of frequencies of historical series of observed rain through theoretical probability distributions is the most commonly used method. The generalized extreme value (GEV) and Gumbel probability distributions stand out among those applied to estimate the maximum daily rainfall. The indication of the best distribution depends on characteristics of the data series used to adjust parameters and criteria used for selection. This study compares GEV and Gumbel distributions and analyzes different criteria used to select the best distribution. We used 224 series of annual maximums of rainfall stations in Santa Catarina (Brazil), with sizes between 12 and 90 years and asymmetry coefficient ranging from -0.277 to 3.917. We used the Anderson–Darling, Kolmogorov-Smirnov (KS), and Filliben adhesion tests. For an indication of the best distribution, we used the standard error of estimate, Akaike’s criterion, and the ranking with adhesion tests. KS test proved to be less rigorous and only rejected 0.25% of distributions tested, while Anderson–Darling and Filliben tests rejected 9.06% and 8.8% of distributions, respectively. GEV distribution proved to be the most indicated for most stations. High agreement (73.7%) was only found in the indication of the best distribution between Filliben tests and the standard error of estimate.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126816484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 9
Sustainability indicators of the Brazil nut tree management 巴西坚果树管理的可持续性指标
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-10 DOI: 10.5327/z21769478889
Fernanda Fonseca, Oscar José Rover, L. H. Wadt, C. B. C. Cartaxo
{"title":"Sustainability indicators of the Brazil nut tree management","authors":"Fernanda Fonseca, Oscar José Rover, L. H. Wadt, C. B. C. Cartaxo","doi":"10.5327/z21769478889","DOIUrl":"https://doi.org/10.5327/z21769478889","url":null,"abstract":"Brazil nut tree (Bertholletia excelsa Bonpl) management, is a traditional activity that plays a key role in the economy of forestbased Amazon communities and in the conservation of forests. Nevertheless, some threats and critical points related to sustainability indicate to the need for establishment of monitoring procedures that can assist in the management of this natural resource. The overall aim of the research was to evaluate the MESMIS method as a tool to support the participatory definition of sustainability indicators to monitor Brazil nut management, and the viability of Brazil nut harvest over time. For that, we carried out a case study in the Porvir Community, RESEX Chico Mendes, Acre State (Brazil), aiming to integrate the perceptions of Brazil nut harvesters, researchers, managers, and technicians to define the indicators. The result was the generation of 18 strategic indicators to assess sustainability in the environmental, technical-economic and social dimensions. Assessment parameters, representing conditions that must be achieved for system sustainability, were collectively defined for each indicator. The main critical values attributed in the evaluation of the indicators are related to Brazil nut commercialization to intermediaries and oscillation in the annual fruit production. The use of the MESMIS method was considered appropriate to the studied context and can be recommended to similar non-timber forest product management systems.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"171 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114152940","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil 巴西瓜am<e:1>河流域景观退化的时空演变
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-01 DOI: 10.5327/z21769478942
Tatiane Camila Martins Silva, I. Vieira, M. Thalês
{"title":"Spatial-temporal evolution of landscape degradation on the Guamá River Basin, Brazil","authors":"Tatiane Camila Martins Silva, I. Vieira, M. Thalês","doi":"10.5327/z21769478942","DOIUrl":"https://doi.org/10.5327/z21769478942","url":null,"abstract":"The goal of this study was to determine the anthropization evolution of the Guamá river basin in the years 2000, 2008 and 2018 by means of the Anthropic Transformation Index. Land use and cover maps were obtained from two databases, Project Mapbiomas (Brazilian Annual Land Use and Land Cover Mapping Project) and PRODES (Project for the Satellite Monitoring of the Brazilian Amazon Forest). The main classes defined in the mapping process are: forest, natural non-forest vegetation, agriculture and livestock farming, secondary vegetation, urban infrastructure, water and others. Secondary vegetation was considered as the area where the forest classes of Mapbiomas intersects with the deforested areas of PRODES, as determined by the map algebra operator. The expansion of agriculture and livestock farming achieved an increase of about 10%, while the forest was reduced in almost 10%. The Guamá river basin obtained an Anthropic Transformation Index of 4.44 in 2000, 5.04 in 2008 and 5.09 in 2018, going from a regular to a degraded state in 18 years. The occupation process caused major alterations in the natural components of the landscape over the course of 18 years, notably in the amount of forest. Protection of 35% of the remnant primary forest in the Guamá river basin is vital for the conservation of water resources vulnerable to changes in land use.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"91 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114928384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Characterization and distribution of pesticide use from 2015 to 2019, by health regions in the state of Rondônia (RO), Amazon, Brazil 巴西亚马逊州Rondônia (RO)卫生区域2015 - 2019年农药使用特征和分布
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-01 DOI: 10.5327/z217694781013
Tainara Ferrugem Franco, Renê Suaiden Parmejiani, M. P. Cunha, Amarildo Miranda, R. C. Marques, J. D. Guimarães
{"title":"Characterization and distribution of pesticide use from 2015 to 2019, by health regions in the state of Rondônia (RO), Amazon, Brazil","authors":"Tainara Ferrugem Franco, Renê Suaiden Parmejiani, M. P. Cunha, Amarildo Miranda, R. C. Marques, J. D. Guimarães","doi":"10.5327/z217694781013","DOIUrl":"https://doi.org/10.5327/z217694781013","url":null,"abstract":"Colonization projects and the consolidation of commodities production made ranching and agriculture one of the main economic activities in Rondônia (RO). Simultaneously to this process, there was an increase in the consumption of pesticides, resulting in risks to human health and the environment. Based on datasets of different origins, this article analyzed the spatial distribution of pesticide commercialization in the different health regions of the state of Rondônia (RO), between 2015 and 2019. We used data from the Rondônia State Pesticide Trade Inspection System (Sistema de Fiscalização do Comércio de Agrotóxicos do Estado de Rondônia – SIAFRO), managed by the Agrosilvopastoral Health Defense Agency of the State of Rondônia (Agência de Defesa Sanitária Agrosilvopastoril do Estado de Rondônia – IDARON); the Phytosanitary Pesticides System (Sistema de Agrotóxicos Fitossanitários – AGROFIT), the National Health Surveillance Agency (Agência Nacional de Vigilância Sanitária – ANVISA), the Brazilian Institue of the Environment and Renewable Natural Resources (Instituto Brasileiro do Meio Ambiente e dos Recursos Naturais Renováveis – IBAMA) and of the IBGE Automatic Recovery System of the Brazilian Institute of Geography and Statistics (Sistema IBGE de Recuperação Automática do Instituto Brasileiro de Geografia e Estatística – SIDRA/IBGE). The consolidation of these data contributed to the analysis and presentation of the spatial distribution of the average amount of pesticides sold by health regions in RO and the main active ingredients sold, their use classification and quantity applied to each culture. We conclude that the production of commodities such as soy, corn, coffee, and pasture are the main drivers of pesticide commercialization in the study region. The main  marketed active ingredients suggest potential risks to public health and the environment. In addition, the present safety criteria regarding pesticides, especially in Brazil, are outdated and lead to public health and environmental vulnerability.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126904378","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Disaster waste: Characterization and quantification applied to an intense rain event
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-01 DOI: 10.5327/z217694781007
Deisy Pereira Paulo de Mello, J. R. Bringhenti, Dejanyne Paiva Zamprogno Bianchi, Laís Selvatici Monte, W. M. R. Günther
{"title":"Disaster waste: Characterization and quantification applied to an intense rain event","authors":"Deisy Pereira Paulo de Mello, J. R. Bringhenti, Dejanyne Paiva Zamprogno Bianchi, Laís Selvatici Monte, W. M. R. Günther","doi":"10.5327/z217694781007","DOIUrl":"https://doi.org/10.5327/z217694781007","url":null,"abstract":"The amount and complexity of solid waste are intensified with the occurrence of natural disasters, compromising response and recovery actions, causing unplanned spending, environmental damage, and health impacts. The proper management of disaster waste requires knowledge of its characteristics such as quantity, composition, hazard, and management by the identified waste stream. This article aims at the characterization and quantification of disaster waste arisen from an event of intense rains, which occurred in 2013, in the municipalities of the State of Espírito Santo in Brazil. For characterization, an online survey instrument was developed and applied in institutions responsible for waste management. The survey was associated with a documentary analysis of photographic records and information obtained from the government database. Estimation of the amount of waste generated was carried out in a selected set using a method already applied in the south of the country. It was adapted to local characteristics and later compared with surveys carried out by the municipality. The characterization identified sediments, soil and mud, remains of vegetation, furniture, wood, and discarded scrap as the main generated waste. The estimated additional generation for durable consumer goods of around 1,700 tons of waste was lower than the municipal records (7,436.46 t) in the period. It was associated with the specific low weight of the considered affected goods and the inclusion of other residues in the data obtained in the city hall records. The methods used in the characterization and quantification presented application viability, through adjustments, and represented an important contribution to municipal disaster management to make cities able to face climate change, carrying out safe management of disaster waste.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"84 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126701514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Connecting environmental education, science–technology–society and ecological theory: possible pathways to reduce socioenvironmental problems 连接环境教育、科学-技术-社会和生态理论:减少社会环境问题的可能途径
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-01 DOI: 10.5327/z21769478996
Pietro Martins Barbosa Noga, Lia Maris Orth Ritter Antiqueira, Edson Jacinski
{"title":"Connecting environmental education, science–technology–society and ecological theory: possible pathways to reduce socioenvironmental problems","authors":"Pietro Martins Barbosa Noga, Lia Maris Orth Ritter Antiqueira, Edson Jacinski","doi":"10.5327/z21769478996","DOIUrl":"https://doi.org/10.5327/z21769478996","url":null,"abstract":"Social practices influence the production, application, and values of modern Science and Technology (S&T). The epistemological integration of science, ideology, and politics produces a complexity that is able to restore the capacity of science to deal with complex problems from several levels. Therefore, it is arguable that scientific education should be effectively committed to instrumentalization for citizenship, as well as to avoid misinterpretations, distortions, and social exclusion. This theoretical study aims to provide a useful guideline for teachers, scientists, and decision-makers focusing on the importance of education and general scientific training on conservation efforts, as to encourage the teaching classes to expand the conceptual framework by encompassing the sociopolitical outspread of S&T. The theoretical foundation was conducted based on two dimensions of Science, Technology, and Society (STS) within scientific education. We created some examples based on phytoplankton biogeochemical dynamics and coral reef conservation to fetch the integration of STS with ecological theory, which can be easily transposed into other subjects or disciplines. The discussion follows the logic that science popularization is a valuable tool for environmental education and a strategy for social inclusion in Brazil. However, the curriculum is an important mechanism driving scholar practices that demands further improvements, besides the academic training of the teachers and the support of the didactic textbooks. Finally, we encourage a policy of science popularization, designed to enlarge individual comprehension of our modern world, to stimulate public participation in decision-making, likewise, to reduce social exclusion and combat structural racism.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124921412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Increased quality of small-scale organic compost with the addition of efficient microorganisms 通过添加高效微生物,提高了小型有机堆肥的质量
Revista Brasileira de Ciências Ambientais Pub Date : 2021-09-01 DOI: 10.5327/z21769478949
Renata Panisson, Felipe Paiva Muscope, C. Müller, H. Treichel, E. Korf
{"title":"Increased quality of small-scale organic compost with the addition of efficient microorganisms","authors":"Renata Panisson, Felipe Paiva Muscope, C. Müller, H. Treichel, E. Korf","doi":"10.5327/z21769478949","DOIUrl":"https://doi.org/10.5327/z21769478949","url":null,"abstract":"Substantial quantities solid waste from livestock are potential sources of nutrients for agroecological production on small-scale farms. The processes used to extract these wastes, however, must be capable of eliminating pathogenic microorganisms. We aimed to evaluate composting and vermicomposting processes by inoculating efficient microorganisms at the field scale. We used cattle and sheep manure with the inoculation of efficient microorganisms (EMs) at concentrations of 0, 2, and 4 mL L-1. In vermicomposting experiments, we added Lumbricus rubellus. After the maturation and stabilization phases of the compounds, concentrations of macronutrients, micronutrients, heavy metals, thermotolerant coliforms and Salmonella spp. were measured. We found that composting processes allowed high availability of macronutrients. Vermicomposting, associated with inoculation with 2 mL L-1 EMs, promoted the lowest concentration of thermotolerant coliforms, ensuring greater elimination of pathogens. The compost produced allowed the valuation of waste and use it as a quality organic fertilizer for agroecological production.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127632980","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Use of HAND terrain descriptor for estimating flood-prone areas in river basins 使用HAND地形描述符估算流域洪水易发区域
Revista Brasileira de Ciências Ambientais Pub Date : 2021-08-17 DOI: 10.5327/z21769478892
Ana Alice Rodrigues Dantas, A. R. Paz
{"title":"Use of HAND terrain descriptor for estimating flood-prone areas in river basins","authors":"Ana Alice Rodrigues Dantas, A. R. Paz","doi":"10.5327/z21769478892","DOIUrl":"https://doi.org/10.5327/z21769478892","url":null,"abstract":"The flood hazard mapping in a river basin is crucial for flooding risk management, mitigation strategies, and flood forecasting and warning systems, among other benefits. One approach for this mapping is based on the HAND (Height Above Nearest Drainage) terrain descriptor, directly derived from the Digital Elevation Model (DEM), in which each pixel represents the elevation difference of this point in relation to the river drainage network to which it is connected. Considering the Mamanguape river basin (3,522.7 km²; state of Paraíba, Brazil) as the study location, the present research applied this method and verified it as for five aspects: consideration of a spatially variable minimum drainage area for denoting the river drainage initiation; the impact of considering a depressionless DEM; evaluation of hydrostatic condition; effect of incorporating an existing river vector network; and comparative analysis of basin morphology regarding longitudinal river profiles. According to the results, adopting a uniform minimum drainage area for the river network initiation is a simplification that should be avoided, using a spatially variable approach, which influences the amount and spatial distribution of flooded areas. Additionally, considering the depressionless DEM leads to higher values of HAND and to a smaller flooded area (difference ranging between 3% and 99%), when compared with the use of DEM with depression, despite 3.1% of the pixels representing depressions. The use of the depressionless DEM is recommended, whereas the DEM pre-processing by incorporating a vector network (stream burning) generates dubious results regarding the relation between HAND and the morphological pattern presented in the DEM. Moreover, the estimation of flooded areas based on HAND does not guarantee the hydrostatic condition, but this disagreement comprises a negligible area for practical purposes.","PeriodicalId":352759,"journal":{"name":"Revista Brasileira de Ciências Ambientais","volume":"47 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2021-08-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124021862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
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