scholarly journals Planos diretores na articulação da gestão de recursos hídricos com o uso do solo no entorno de reservatórios

2020 ◽  
Vol 13 (3) ◽  
pp. 958
Author(s):  
Tatiana De Oliveira Calado ◽  
Maria Do Carmo Sobral ◽  
Ariane Silva Cardoso ◽  
Erika Alves Tavares Marques

A Política Nacional de Recursos Hídricos tem como uma das suas principais diretrizes a articulação da gestão da água com a gestão do uso do solo. Este trabalho tem como objetivo verificar se esta integração está sendo considerada nos instrumentos de gestão da bacia e do território onde se insere o açude Epitácio Pessoa, na Paraíba. Para tal, foi realizada análise do Plano Diretor da Bacia Hidrográfica do Rio Paraíba e dos planos diretores municipais de Boqueirão, Barra de São Miguel e Cabaceiras, localizados no entorno do reservatório. Foi verificado que existem coerências entre os objetivos, princípios e diretrizes dos documentos analisados. Os programas planejados pelo plano de bacia hidrográfica incorporam a questão do uso do solo como elemento a ser monitorado para garantir a qualidade das águas do reservatório. Os planos diretores municipais, que visam o ordenamento territorial, incorporam as questões dos recursos hídricos indiretamente ao regular as atividades no entorno, bem como ao incluir ações relativas ao saneamento, agricultura e gestão dos resíduos sólidos. Os zoneamentos dos municípios de Boqueirão e Barra de São Miguel realizam planejamentos estratégicos para conservação do açude Epitácio Pessoa. Entretanto, ressalta-se a necessidade de os planos de bacia hidrográfica incluírem orientações mais diretas aos municípios, e estes por sua vez, necessitam ampliar suas compreensões acerca da gestão dos recursos hídricos e incorporar o conceito de bacia hidrográfica na gestão integrada com os municípios vizinhos, buscando garantir a segurança dos recursos hídricos locais.  Master plans in articulation of water resource management with land use around reservoirs A B S T R A C TBrazil’s National Water Resources Policy has as one of its main guidelines the articulation of water management with the land use management. This work aims to verify if this integration is being considered in the management instruments of the river basin and territory where the Epitácio Pessoa Reservoir is located, in Paraiba. To this end, an analysis was made of the Paraiba River Basin Master Plan, along with the master plans of Boqueirão, Barra de São Miguel and Cabaceiras, municipalities located near the reservoir. It was verified that there are consistencies between the objectives, principles and guidelines of the documents. The programs planned by the basin plan incorporate the issue of land use as an element to be monitored to guarantee the quality of the water in the reservoir. The municipal master plans, which focus on territorial planning, incorporate water resources issues indirectly when regulating activities in their jurisdictions, and include actions related to sanitation, agriculture and solid waste management. The municipal zoning of Boqueirão and Barra de São Miguel carry out strategic planning for the conservation of the Epitácio Pessoa Reservoir. However, there is a need for basin plans to include more direct guidance for municipalities, which in turn need to broaden their understanding of water resource management and incorporate the concept of an interconnected river basin into integrated management with neighboring municipalities, seeking to ensure the security of local water resources.Keywords: integrated management; land planning; water quality; zoning. 

Water ◽  
2020 ◽  
Vol 12 (10) ◽  
pp. 2661
Author(s):  
Yongfen Zhang ◽  
Chongjun Tang ◽  
Aizhong Ye ◽  
Taihui Zheng ◽  
Xiaofei Nie ◽  
...  

Quantitatively figuring out the effects of climate and land-use change on water resources and their components is essential for water resource management. This study investigates the effects of climate and land-use change on blue and green water and their components in the upper Ganjiang River basin from the 1980s to the 2010s by comparing the simulated changes in blue and green water resources by using a Soil and Water Assessment Tool (SWAT) model forced by five climate and land-use scenarios. The results suggest that the blue water flow (BWF) decreased by 86.03 mm year−1, while green water flow (GWF) and green water storage (GWS) increased by 8.61 mm year−1 and 12.51 mm year−1, respectively. The spatial distribution of blue and green water was impacted by climate, wind direction, topography, and elevation. Climate change was the main factor affecting blue and green water resources in the basin; land-use change had strong effects only locally. Precipitation changes significantly amplified the BWF changes. The proportion of surface runoff in BWF was positively correlated with precipitation changes; lateral flow showed the opposite tendency. Higher temperatures resulted in increased GWF and decreased BWF, both of which were most sensitive to temperature increases up to 1 °C. All agricultural land and forestland conversion scenarios resulted in decreased BWF and increased GWF in the watershed. GWS was less affected by climate and land-use change than GWF and BWF, and the trends in GWS were not significant. The study provides a reference for blue and green water resource management in humid areas.


2020 ◽  
Author(s):  
Iolanda Borzì ◽  
Murugesu Sivapalan ◽  
Brunella Bonaccorso ◽  
Alberto Viglione

<p>In many regions of the world, water supply is threatened by natural hazards such as floods and droughts, as well as by shocks induced by anthropogenic changes to water use. Lack of anticipation and/or preparation for these events can lead to delayed or insufficient responses to sudden or developing water crises, that sometimes can produce irrecoverable damage to the environment. In this work, a socio-hydrological approach to sustainable water resources management of the Alcantara River Basin in Sicily (Italy) is adopted that explicitly takes into account feedbacks between the natural and the human components that might arise from shocks to the water management system, including possible evolution of policy responses. The Alcantara River Basin is a groundwater-fed catchment which supplies many villages on the Ionian coast up to Messina city, mainly through the Alcantara aqueduct, but also agricultural areas and industries, including hydropower plants. It also hosts the Alcantara Fluvial Park, an important natural reserve. The Alcantara aqueduct also supplied the city of Messina during a temporary failure of its main aqueduct caused by a landslide in October 2015. The main purpose of the work is to use the socio-hydrological model as a “screening tool” to frame water resource management issues in a broad way and provide guidance to the community to identify aspects of societal behavior that need to evolve towards sustainable water resource management in order to withstand future shocks. This has been done by scenario simulations in conditions of a natural shock affecting the system (i.e. drought) and of a human-induced one (i.e. increase in groundwater extraction). Sensitivity analysis of the model social parameters revealed how the value attributed by the society to the environment and water resources use, its capacity to remember previous water crises and, in particular, its previous responses to shocks, can affect the system in a way that can produce paradoxical effects. Results show how a rapid decision-making strategy that may work in the short term, can be counter-productive when viewed over the long term and how a do-nothing decision during a water crisis could be highly damaging to the environment. For the above-mentioned reasons, this socio-hydrological approach can be considered as a useful tool to understand human-water dynamics and to support decision-makers in water resource management policies with a broad and long-term perspective.</p>


2018 ◽  
Vol 7 (4.34) ◽  
pp. 14
Author(s):  
Nural Asma Ezzatee Mohd Razak ◽  
Mohd Khairul Amri Kamarudin ◽  
Noorjima Abd Wahab ◽  
Ahmad Shakir Mohd Saudi ◽  
Muhammad Hafiz Md Saad ◽  
...  

Water resource management is important for human well-being, ecosystems development and protection of existing water bodies from pollution and exploitation. Water resource management and sedimentation are carried out in Terengganu River Basin, Terengganu. The main objective is to study water resources management on sediment problems in the Terengganu River Basin. The Gravimetric method was used to analysis the TSS measured in mg/L. 250 ml water sample was needed for each study area (each station). Based on the cross section trend and the average downstream and middle section of the Sungai Terengganu system, the average TSS level is higher than the upper section. The minimum width allocation of river reserves to control development near the river is based on the Department of Irrigation and Drainage (DID). Finally, there are a few recommendations of sedimentation management around Terengganu River Basin that will improve the river water quality, especially in Malaysia. 


2015 ◽  
Vol 73 (5) ◽  
Author(s):  
Anis Syazwani Sukereman ◽  
Robiah Suratman ◽  
Chang Wai Sin

Over 20 years, there has been an explosive growth of interest in the application of Integrated Water Resource Management among majority of developing and developed countries in settling various type of water issue. Unfortunately, the effective implementation of this approach still remains in doubt. Fragmented water resources legislation, complexity of constitutional framework on water resources management, lack of coordination among stakeholders and overlapping of authorities in managing water resources are among the issues that challenge the Integrated Water Resource Management implementation. Therefore, this paper attempts to review the broad literature regarding what is still wrong with this approach and propose the solution on how to enhance the current implementation. Since, there is still no authorized framework available to be used by the stakeholders involved in assessing land use practice and comparing the effectiveness of the implementation progress between states in Malaysia, this paper briefly concludes that there is a need to develop a framework for Land Use Assessment as a work performance guideline especially to the various stakeholders involved. Therefore, it is hope that this finding would offer better improvement to water resource management through effective, good governance and practical ways.


Author(s):  
ZHIFENG YANG ◽  
YONG ZENG ◽  
YANPENG CAI ◽  
QIAN TAN

Water is a fundamental resource in our daily lives and for social development. Currently, water resources are under stressed conditions in north China due to the ongoing growth of demand for water and the frequent occurrences of natural disasters in this area. This problem is further intensified by the deterioration of water quality, which is a side effect of economic development, industrial expansion, and agricultural growth. These problems interconnect with each other, leading to a variety of conflicts over water resources. To resolve such conflicts, a two-person game-theory based model is developed for water resource management in the trans-boundary regions of a river basin. The model is tested on a river basin within this area of China in which water resources are contested. Through the developed model, potential policy alternatives can be generated for water resource management and pollution control within the context of a river basin. Cooperative and/or competitive mechanisms can thus be formulated through competition and cooperation over issues of water quantity and quality among different levels of jurisdictions in the same river basin. Then, Nash Solution is used to solve scenarios of competition and cooperation between the upstream and downstream based on the integration of optimization and simulation models. The developed model and the solution process is then applied to resolve water conflicts between Beijing and Hebei province, which are in the upstream and downstream of the Guanting Reservoir Basin (GRB), respectively, representing two major stakeholders in the contest over water quantity and quality. Non-cooperative and cooperative scenarios for the two-player game scenarios are developed to investigate and compare potential economic benefits of these scenarios. Results indicate that the developed model can be effectively and flexibly employed to resolve water conflicts between upstream and downstream stakeholders in the same river basin. The results can also be used to help formulate economic compensation mechanisms within these jurisdictions.


Author(s):  
Vanessa Gomes de Araújo ◽  
Gregorio Guirado Faccioli ◽  
Raimundo Rodrigues Gomes Filho ◽  
Anderson de Almeida Santos ◽  
Juan Mariano Camarillo Naranjo ◽  
...  

Parallel to the growing demand for multiple uses of water, conflicts between its users appear, contributing to the increase in the number of cases submitted to the Judiciary. This study aimed at analyzing the existence of mediation as a method of resolving possible conflicts related to water resources in the Sergipe River Basin. The qualitative approach research was developed based on a bibliographic survey, by means of consultations with books, pertinent legislation, articles in scientific and non-scientific journals and, documental, through the analysis of the minutes of the meetings of the Sergipe River Basin Committee, its Internal Regulations and the Climatological Report that analyses the rainfall variability by regions in Sergipe, from 2000 to 2017. The results revealed that despite moving towards recognizing mediation as a method for resolving conflicts, the Committee faced several difficulties in carrying out decentralized management of water resources, especially with regard to the resolution of water disputes. Possible solutions to some of the problems faced by the Committee can be pointed out, such as training its members in water resource management and conflict management, in addition to making them aware of participating frequently in Committee meetings and also stimulating the participation of the population in these meetings.


2016 ◽  
Vol 40 (4) ◽  
pp. 390-404 ◽  
Author(s):  
Eliete Nazaré Eduardo ◽  
Carlos Rogério de Mello ◽  
Marcelo Ribeiro Viola ◽  
Phillip Ray Owens ◽  
Nilton Curi

ABSTRACT Hydrological models are tools which describe processes and allow predicting the results of making management decisions, and are an important water resource management tool, especially for small-sized watersheds. This work had as an objective to test different calibration strategies and apply the SWAT model for hydrological simulation of the Mortes River Basin, MG. We evaluated 6 fluviometric stations, with drainage area between 272 and 6070 km² for purposes of water resource management. The evaluation of the model performance was conducted by using Nash-Sutcliffe coefficients (CNS) and percent bias (PBIAS). The results obtained from the statistic indices applied in the analysis of the model performance qualified the SWAT hydrological model as adequate for streamflow simulation in the Mortes River Basin. The adopted strategies attest to the applicability of the model as a management tool for water resources planning for other small-sized watersheds without data, in order to plan for rational water use.


2020 ◽  
Vol 12 (21) ◽  
pp. 8802
Author(s):  
Jing Guo ◽  
Hailiang Xu ◽  
Guangpeng Zhang ◽  
Kaiye Yuan ◽  
Hongbo Ling

Ecosystem services (ES) are essential for human well-being. However, few studies have investigated the optimization of the management of water resources based on trade-offs of ES in arid areas. In order to solve this problem, four important ES that affect the carbon cycle and water cycle were selected from the regulating ecosystem services (carbon storage (CAS), evapotranspiration (ET)), the supporting ecosystem services (soil drought index (TVDI)) and the provisioning ecosystem services (groundwater depth (GWD)) in arid areas. The spatiotemporal distribution of these four ES were quantitatively analyzed—using related models—in the Tarim River, situated in a typical arid inland basin, in 2000, 2010, and 2018, in order to determine the fundamental driving factors of change in ES. The results showed that CAS was mainly affected by changes in land use, while ET, TVDI, and GWD were mainly affected by changes in water volume. The unified management of water resources improved the regulating ecosystem services (an initial increase in CAS, followed by a decrease; ET continued to grow from 2000 to 2018), the supporting ecosystem services (TVDI was maintained at 0.69–0.74), and the provisioning ecosystem services (GWD rose 5.77% in 2000–2010, and stabilized at 3.05 m in 2018). The trade-off/synergy relationships of the four ES were further analyzed at different geographical scales through correlation analysis and the trade-off index (RMSD). In different river sections, the ES that affect carbon and water cycles were highly dependent on each other. In areas with high CAS, the groundwater depth was low, and the soil moisture and ET were high. With different land use types, there was a synergistic relationship between CAS and GWD in woodland and grassland areas, and between ET and GWD in farmland areas. This showed that there was still strong competition between natural vegetation and groundwater, represented by woodland and grassland, and the ineffective loss of water resources such as ET through expansion of farmland. Finally, this study innovatively incorporated the results of trade-offs of ES into water resource management. In order to reduce the trade-offs between ES, and to improve ES, to achieve the ecological protection and restoration of desert riparian forests, and to optimize the water resource management in arid areas, different ecological water regulation and control measures were proposed in the high-flow years and the low-flow years of arid areas. This study can provide important scientific references for the improvement of ES and the optimization of the management of water resources in other similar river basins in arid areas.


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