O propósito das Unidades de Conservação (UCs) consiste em garantir odesenvolvimento sustentável de uma área que apresenta diversidadebiológica e conhecimento tradicional, contribuindo para a redução davulnerabilidade socioambiental. O trabalho evidencia os aspectos inerentesao conceito de desenvolvimento sustentável, Área de Proteção Ambiental(APA) e recursos hídricos, direcionando esse contexto para a realidade dosmoradores da APA da Ilha do Combu no município de Belém, Pará. O objetivodesta investigação foi analisar os desafios da APA insular sob a percepçãodos moradores locais, propondo um planejamento para gestão de recursohídrico que colaborasse com o desenvolvimento sustentável nessa área.Houve a caracterização das principais problemáticas vinculada a referida UCe, posteriormente, avaliou-se a efetividade do uso da água e sustentabilidadesugerindo um planejamento de gestão hídrica. Os resultados apontaramalgumas complexidades típicas de APA de uma ilha, fato que refletiu nadefinição das metas prioritárias sugeridas no planejamento.

A sustentabilidade hídrica na bacia do rio Guamá, Amazônia Oriental/Brasil Water sustainability of the Guamá river basin, Eastern Amazonia/Brazil Palavras-chave Indicadores Bacia hidrográfica Manejo de bacias Resumo A bacia hidrográfica do rio Guamá abrange 19 municípios localizados no nordeste do Pará, com grande diversidade de formas de uso da terra e a maior densidade demográfica do estado. Nesta pesquisa foi avaliada sua sustentabilidade hídrica, a partir dos aspectos hidrológicos, ambientais, sociais e de gestão, nas suas 8 sub-bacias componentes. O indicador hidrológico demonstrou um comportamento mediano para às sub-bacias; o ambiental destacou a fragilidade da cobertura vegetal resiliente; o social apresentou o pior desempenho; e o de gestão indicou a necessidade do fortalecimento institucional.A bacia do rio Guamá no geral obteve um índice de sustentabilidade intermediário, porém os resultados parciais apontam para necessidade de medidas voltadas ao planejamento estratégico e ao manejo, para minimizar as pressões sobre a vegetação remanescente, reforçar a capacidade institucional e melhorar a qualidade dos recursos e de vida da população, com a intenção de potencializar a sustentabilidade da bacia. AbstractThe Guamá River basin covers 19 municipalities located in northeastern Pará, with great diversity of land use forms and the highest population density of the state. In this research, its water sustainability was evaluated, based on the hydrological, environmental, social and management aspects, in its 8 sub-basins. The hydrological indicator showed a medium behavior for the subbasins; the environmental highlighted the fragility of the resilient vegetal cover; the social performance presented the worst performance; and the management pointed out the need for institutional strengthening. The Guamá river basin in general obtained an intermediate sustainability index, but the partial results indicated that for measures geared to the strategic planning and management, to minimize pressures on the remaining vegetation, enhancing institutional capacity and improving the quality of life of the population and resources, with the intention of enhancing the sustainability of the basin.

Artigo publicado por Ciência e Natura sob uma licença CC BY-NC-SA 4.0.

Tropical ecosystems play an important role in the environment. They provide multiple ecosystem services, such as carbon capture and sequestration, food supply, and climate regulation. Studying land use and land cover change makes it possible to understand the land’s alterations associated with deforestation, degradation, erosion, soil desertification, and biodiversity loss. The objective of this study is to evaluate the different approaches to land use and land cover research in tropical forests based on the evolutionary and qualitative analysis of the last 44 years of scientific production. The data were collected using the Scopus database and was based on the PRISMA methodology’s four phases: (i) identification, (ii) screening, (iii) eligibility, and (iv) included. The results showed a significant increase in the study of land use and land cover consolidated in 4557 articles, with contributions from 74 countries, revealing 14 themes and seven lines of research. Core research areas such as biodiversity, land use, and conservation exist due to the ongoing interest in the value of tropical forests and their response to climate change. The present research allowed us to consider future study topics such as the relationship between sustainable development goals and land use and cover in tropical forests, as well as the evaluation of the environmental impact of economic activities in forests.

A bacia do rio Guamá, localizada no nordeste do estado do Pará, de relevante signifi cado socioeconômico e ambiental para região, foi caracterizada em função da sua resposta hidrogeomorfológica utilizando a delimitação em Unidades de Paisagem, que representam o produto da interação entre os diversos atributos do sistema natural e do sistema antrópico responsáveis pela sua dinâmica. A metodologia constou da integração cartográfi ca em Sistema de Informações Geográfi cas (SIG), associando os aspectos relativos a paisagem natural-as unidades geológicas, geomorfológicas, da rede de drenagem e a distribuição da precipitação pluviométrica; e o produto das formas de intervenção antrópica, na forma de uso e ocupação da terra. Os resultados obtidos revelaram que a região apresenta uma dinâmica natural crescente do Alto para o Baixo Guamá, Informações sobre o Artigo Recebido (

Hydroelectric energy is known for being renewable, clean, efficient and harmless in comparison to other nonrenewable energy sources. Nonetheless, the installation of a hydroelectric power complex (HC) in places, such as the Amazon, have proven to cause land cover changes, and alter local population dynamics. Issues like migration and city expansion can cause economic, social and cultural impacts locally, while the benefits are seen in other regions. The main objective of this study is to evaluate the socioeconomic indicators of the municipalities directly affected by the Tucuruí HPC. The study took into consideration three scenarios: the post-inauguration of the HC in 1988 (phase I), the beginning of construction in 2000 (phase II), and the completion of the Tucuruí HC in 2010 (phase III). Two types of multivariate analysis were conducted: the principal component analysis and cluster analysis, in order to identify the variables related to quality of life, and to be able to group the municipalities which have a similar quality of life. During the three scenarios studied, Tucuruí remained the only municipality with the highest quality of life index in the entire region, revealing the inequality present in the study area, which is something to be considered during the development of public policies.

The objective of this study was to analyze the sustainability to water erosion in the Capim river/PA-MA. Acquired precipitation (GPCC), slope (TOPODATA project), land use and land cover data (MapBiomas) and pedology (Brazilian Soil Classification System) were obtained. Based on these variables, in a Geographic Information System environment, the product representing the sustainability to soil water erosion was generated. A sustainability gradient for soil water erosion was observed in the SE-NW direction, where it was higher near the mouth of the Capim River. The other variables were: clinical component presenting predominance of stability and high sustainability in the south of the basin; land use influences the entire axis of the basin, indicating instability in the medium-low Capim and in the extreme southeast. It was observed that the sustainability to erosion in the Capim watershed is motivated by intensified land use near the mouth. The zoning carried out in the basin is a warning sign for the municipalities of São Domingos do Capim, Rondon do Pará and Goianésia do Pará.

The impacts of anthropogenic degradation are becoming increasingly more evident in the Amazon and are jeopardizing its environmental systems and water resources, particularly in low monitored watersheds. Thus, the use of hydrological models is necessary to gain an understanding of these impacts on Amazonian river systems. The aim of this study was to analyze the simulation of some hydrological processes in the Itacaiúnas River watershed and its relation with human-induced impacts in the Southeast region of the Pará state using the Soil and Water Assessment Tool (SWAT) model. SWAT modeling requires several databases, such as relief, land use and land occupation, soil type, and climatic and hydrological variables. These data are input parameters for the SWAT model. The results showed that the hydrological variables in the Amazon tend to follow the seasonal precipitation cycle, with the highest values occurring between January and June and lowest between July and November. It was evident that base and