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Tytuł:
Dissecting the complexity of Cidanau watershed governance through payment environment services and non-payment environment services
Autorzy:
Budiarto, Muh. S.
Widianingsih, Ida
Muhtar, Entang A.
Buchari, Raden A.
Saksono, Herie
Powiązania:
https://bibliotekanauki.pl/articles/28411655.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Cidanau Watershed
Indonesia
non-PES scheme
PES
watershed governance
Opis:
The objective of this study is to examine the implementation of a combined scheme involving payment environment services (PES) and non-payment environment services (non-PES) in the management of the Cidanau River Basin. This study used exploratory research to analyse the structure and mechanism of PES and non-PES schemes for the governance system. The Cidanau Watershed governance is a pioneer in sustainable integrated water resources management in Indonesia and has persisted until the present time. The governance of the Cidanau Watershed is dynamic, resilient, and evolving in response to various changes in social and ecological systems. A bridging organisation like the Cidanau Watershed Communication Forum (Ind.: Forum Komunikasi DAS Cidanau - FKDC) requires legal standing to be visible and gain the trust of the public, especially when implementing a PES approach like the Cidanau River Basin, where service buyers utilise non-direct payment mechanisms. The challenging aspect of developing a PES scheme is empowering knowledge regarding the importance of soil and water preservation among upstream communities, particularly in developing countries like Indonesia, where upstream communities are predominantly composed of low-income farmers whose livelihoods depend on nature. The non-PES scheme represents the government’s mandatory responsibility, whereas the PES scheme presents public participation in active collaboration through the FKDC as an ad hoc institution. A combination of the non-PES and PES scheme approach can serve as a model and reference for similar river basin governance frameworks. Further research is needed regarding social networks and institutional development of sustainable watershed governance in the Cidanau River Basin.
Źródło:
Journal of Water and Land Development; 2023, 59; 164--173
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Historical and projected land-use / land cover changes of the Welmel River Watershed, Genale Dawa Basin, Ethiopia
Autorzy:
Ayalew, Solomon E.
Nigussie, Tewodros A.
Powiązania:
https://bibliotekanauki.pl/articles/27312636.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
CA-Markov chain model
change detection
land use/land cover
LULC
Welmel Watershed
Opis:
Human activities on land have grown significantly changing the entire landscape, while most of the changes have occurred in the tropics. The change has become a serious environmental concern at the local, regional and global scales. The intensity, speed, and degree of land use / land cover (LULC) changes are nowadays quicker compared to the past because of the development of society. Moreover, the rapid increase in population resulted in disturbing a large number of landscapes on the Earth. The main objective of this study was to detect historical (1990-2020) and predicted (2020-2050) LULC changes in the Welmel River Watershed, which is located in the Genale-Dawa Basin, South Eastern Ethiopia. The dataset of 1990, 2005, and 2020 was generated from Landsat 5, Landsat 7 and Landsat 8 respectively to determine the historical LULC map. The result of this study revealed that agriculture/ settlement increased by 6.85 km2 ∙y-1, while forestland declined by 9.16 km2 ∙y-1 over the last 31 years between 1990 and 2020. In the coming 31 years (by 2050), if the existing trend of the LULC change continues, agriculture/settlement land is expected to increase from 290.64 km2 in 2020 to 492.51 km 2 in 2050 at the rate of 6.73 km2 ∙y-1, while forestland is expected to shrink from 690.48 km2 in 2020 to 427.01 km2 in 2050 by a rate of 8.78 km2 ∙y-1.
Źródło:
Journal of Water and Land Development; 2023, 58; 89--98
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Hydrological Modelling in the Ouergha Watershed by Soil and Water Analysis Tool
Autorzy:
Erraioui, Lamia
Taia, Soufiane
Taj-Eddine, Kamal
Chao, Jamal
El Mansouri, Bouabid
Powiązania:
https://bibliotekanauki.pl/articles/24201734.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
SWAT
Ouergha watershed
hydrological modeling
water balance
Opis:
Streamflow modelling is crucial for developing successful long-term management, soil conservation planning, and water resource management strategies. The current work attempts to develop a robust hydrological model that simulates streamflow with the slightest uncertainty in the calibration parameters. A physical-based and semidistributed hydrological SWAT model was employed to assess the hydrological simulation of the Ouergha watershed. The monthly simulation of the SWAT model achieved in the time frame from 1990 to 2013 has been split into warm-up (1990–1996), calibration (1997–2005), and validation (2006-2013). The SUFI-2 algorithm’s preliminary sensitivity and uncertainty analysis was done to calibrate the model using 11 hydrologic parameters. The model’s performance and robustness findings are promising. To evaluate the model, the coefficient of determination (R2), Nash-Sutcliffe efficiency (NSE), and percent of bias (PBIAS) were utilized. The value of R2, NSE, and PBIAS ranged from 0.45–0.77, 0.6–0.89, and +12.72 to +21.89% during calibration and 0.51–0.85, 0.64–0.88, and +8.82 to +22.19% during validation period, respectively. A high correlation between the observed and simulated streamflow was recorded during the calibration and validation periods. More than 68% of the observation data are encompassed by the 95PPU across both the calibration and validation intervals, which is excellent in terms of the P-factor and R-factor uncertainty criterion. The projected streamflow matches the observed data well graphically. According to the total hydrological water balance study, 29% of precipitation is delivered to streamflow as runoff, whereas 54% of precipitation is lost through evapotranspiration. The recharge to the deep aquifers is 8%, whereas the lateral flow is 10%. The findings of this study will help as a roadmap for the anticipated water management activities for the basin since the management and planning of water resources require temporal and spatial information.
Źródło:
Journal of Ecological Engineering; 2023, 24, 4; 343--356
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Long-term variability of runoff from a small agricultural catchment of the North Masovian Lowland
Autorzy:
Kolasińska, Karolina
Kierasiński, Bartosz
Karpińska, Katarzyna
Szymczak, Tomasz
Banasik, Kazimierz
Powiązania:
https://bibliotekanauki.pl/articles/28411630.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
agricultural watershed
climate change
flow decrease
hydrological characteristics
land use change
renewable water resources
Opis:
Changes of land use, population and climate cause spatial and temporal changes in renewable water resources. For better understanding of the changes and effective management of water resources, hydrological investigations in river catchments are carried out around the world. A special investigation involves a study of hydrological processes in small site-specific catchments. The aim of the study is to analyse three characteristic river flows of a small lowland river on the basis of field surveys over two multiannual periods and to evaluate the applicability of indirect methods for determining characteristic flows in the catchment. Hydrological studies in the small agricultural catchment of the Mławka River, located in the Mławka Hills mesoregion, a part of the North Mazovian Lowland macro-region, have continued since 1966. The recorded data were used to determine daily flows and selected characteristic flows for multiannual periods of 1966-1990 and 1991-2020. To determine characteristic flows with indirect methods, three regional formulae and isorea methods were used. The study showed a decrease in renewable water resources over the period. In the multiannual periods, the average flow at the gauge station of Mławka River decreased by 15.6%. The outflow coefficient decreased from 0.303 to 0.265. The minimum annual flows also decreased by 29.1% and annual maximum flows showed an average increase by 19.7%. The use of indirect methods to determine the mean flow yielded results that converged with those from the second multiannual period.
Źródło:
Journal of Water and Land Development; 2023, 58; 212--219
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Morphometric analysis of Klina River basin using geospatial technology and open access datasets
Autorzy:
Çadraku, Hazir
Hasa, Xhesika
Powiązania:
https://bibliotekanauki.pl/articles/27312608.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
digital elevation model
morphometric analysis
stream
water resources
watershed
Opis:
According to the Water Framework Directive 2000/60 EC, the river basin is the basic unit for integrated water management at the basin level. In this sense, the knowledge of the morphometric parameters of the river takes on special importance. Morphometric analysis helps in understanding the geo-hydrological characteristics of a river basin. Various authors point out that the morphometric analyses of a drainage watershed demonstrate the dynamic equilibrium that has been achieved due to the interaction between matter and energy. The analysis of morphometric parameters also facilitates and helps to understand the hydrological relations of the basin. This paper deals with the morphometric analysis of sub-basins in the Klina River basin which is located in the northeastern part of the Dukagjini depression. To determine the morphometric parameters in the Klina River basin, the digital relief model from the Advanced Land Observation Satellite (ALOS) platform with a resolution of 20 × 20 m and the ArcMap 10.5 software were used. The results reveal that the total number of streams is 753 of which 602 are 1st order streams, 119 - 2nd order, 23 - 3rd order, 6 - 4th order, 2 - 5th order, and 1 - 6th order streams. The mean bifurcation ratio is 3.81, drainage density is 1.52 km∙km-2. The data and information presented in this study will be helpful and interesting in the plan of the management of Klina River basin which covers an area of 477 km2 within which is estimated to live about 100,000 inhabitants.
Źródło:
Journal of Water and Land Development; 2023, 58; 31--41
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spatio-temporal structure of natural and anthropogenic land use in a semi-arid watershed: Northwest Algeria
Autorzy:
Melalih, Ahmed
Powiązania:
https://bibliotekanauki.pl/articles/27312637.pdf
Data publikacji:
2023
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Algeria
GIS
land use
natural formation
anthropogenic formation
remote sensing
semi-arid watershed
Wadi Sarno
Opis:
The objective of this study is to map through multisource data, the change in land use structure and quantify its evolution around the semi-arid watershed of Wadi Sarno of Sidi Bel Abbès between 2000 and 2021. To this end, satellite images of 2000 and 2021 have been exploited by remote sensing and GIS, as well as field surveys for verification and validation of the results obtained. The methodology is based on supervised classification by maximum likelihood from the processing of satellite images. The analysis of the dynamics of land use shows that the areas of natural formations (dense forest and bare land) have decreased from 17,560 ha to 15,516 ha, that is to say, a regression of 8.04%, while the anthropised formations (Agriculture, open forest and rangeland, built-up areas, water bodies) have experienced an increase in their surface area, they have gone from 7901 ha to 9945 ha, that is to say, 10.4% of the total surface area of the basin. In the light of these results, it is possible to define priority areas for restoring degraded zones and enhancing natural formations. by giving priority to perennial crops to fix the soil in place and benefit from additional income for the region's farmers. By planting hardy species such as olives, figs, almonds, carob trees and so on. These species have proven their effectiveness and adaptation to local soil and climate conditions.
Źródło:
Journal of Water and Land Development; 2023, 58; 110--119
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of Multivariate Statistical Methods to the Hydrochemical Study of Groundwater Quality in the Sahel Watershed, Algeria
Autorzy:
Hakim, Djafer Khodja
Amina, Aichour
Amina, Rezig
Djouhra, Baloul
Ahmed, Ferhati
Powiązania:
https://bibliotekanauki.pl/articles/2173331.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
hydrochemical analysis
water quality
groundwater
principal component analysis
hierarchical cluster analysis
Sahel watershed
Opis:
The quality of groundwater is characterized by several numbers of physical and chemical parameters, which determine the use of water (water supply, irrigation, industry). This search paper is a contribution made to know the hydrochemical characteristics of groundwater in the Sahel sub-catchment which belongs to the large Soummam North basin of Algeria. Different multivariate statistical techniques were used such as principal component analysis (PCA), Hierarchical Cluster Analysis (HCA) and Diagram Analysis. These analyses are exercised to a dataset formed from 37 boreholes with 12 chemical variables over the entire surface of the watershed. The samples were collected in 2016. The 37 boreholes are one of the main water resources that supply the wilaya of Bouira with drinking water and irrigation. The analysis of water quality using different methods (ACP, HCA and Diagram) resulted in two chemical kinds: (Chloride, calcium sulfate and magnesium), and (Bicarbonate calcium and magnesium). The results have shown that 74% of the boreholes were contaminated, the rest of boreholes were characterized by a good quality and they have not suffered any contamination and can be consumed without any risk.
Źródło:
Journal of Ecological Engineering; 2022, 23, 8; 341--349
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the Erosion Potential Method in Vithkuqi Watersheds (Southeastern Albania)
Autorzy:
Marko, Oltion
Gjipalaj, Joana
Shkodrani, Neritan
Powiązania:
https://bibliotekanauki.pl/articles/2086363.pdf
Data publikacji:
2022
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
erosion potential method
watershed
Albania
sediment yield
soil erosion
Opis:
Soil erosion is one of the most important phenomena affecting land composition and settlement. Among all natural causes of soil erosion such as rainfall intensity, temperature and wind, the human activity; massive deforestation and intensive agriculture, including the latest climate changes are considered as very important factors, especially nowadays. Thus, calculating the soil erosion coefficient appears very important in order to prevent the phenomena. Many methods are used to calculate such coefficient but in the presented research, the Erosion Potential Method was chosen. In this study, eight watersheds in southeastern Albania were evaluated. Results show that erosion is present in all considered watersheds. In one case (Panariti watershed) the erosion coefficient was very high; excessive, while in others it varies from heavy to very slight erosion. In conclusion, it can be stated that the Erosion Potential Method can be applied in the Albanian contest, same as in other neighbor countries. The results from Panariti, Roshani and Gianci should be further investigated due to the high quantity of soil eroded.
Źródło:
Journal of Ecological Engineering; 2022, 23, 4; 17--24
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
DE-XRT coal preparation image overlapping and adhesion particle segmentation method
Autorzy:
He, Lei
Wang, Shuang
Guo, Yongcun
Powiązania:
https://bibliotekanauki.pl/articles/2175443.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
overlap
adhesion
image segmentation
watershed algorithm
DE-XRT
coal
gangue
Opis:
Accurate segmentation of dual-energy X-ray transmission (DE-XRT) coal and gangue image regions are a prerequisite for feature extraction, identification, localization, and separation. A watershed algorithm based on multi-grayscale threshold segmentation (MGTS) is proposed to mark the foreground for the adhesion and overlap of coal and gangue. The grayscale images of foreground objects are segmented using multiple grayscale thresholds, and the number of connected domains is recorded each time. As the gray threshold value decreases, overlapping and adhering objects are gradually separated. The binary image segmented at the grayscale threshold with the most significant number of connected domains is used as a marker region. This marker region is used as the seed point of the watershed algorithm to find the dividing line. The experimental results show that the segmentation accuracy is 91.35%, and the segmentation accuracy of overlapping adhesions of 2, 3, and 4 targets is higher than 90%.
Źródło:
Physicochemical Problems of Mineral Processing; 2022, 58, 6; art. no. 155840
1643-1049
2084-4735
Pojawia się w:
Physicochemical Problems of Mineral Processing
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dynamic model engineering of sustainable agriculture as a pragmatic concept of critical land management
Autorzy:
Maroeto, Maroeto
Santoso, Wahyu
Powiązania:
https://bibliotekanauki.pl/articles/2174326.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
critical land
erosion area
sustainable agriculture
watershed area
Opis:
According to many experts, the water crisis will be one of the most important challenges in the coming years on the planet. Watershed management is one of the most effective ways to conserve rainwater and develop water resources. The purpose of the study was to obtain a model of critical land management in the Welang watershed area. This study uses a dynamic systems approach based on a causal philosophy (cause and effect) through a deep understanding of how a system works. The parameters used are based on sustainable agriculture in terms of physical sustainability aspects/critical land from erosion factor indicators. Model validation is done by comparing the behaviour of the model with a natural system (quantitive behaviour pattern comparison), namely the Mean Absolute Percentage Error (MAPE) Middle-Value Test. Modelling is supported by Powersim Studio Express Software ver. 10. The results show that the physical sustainability model/critical land using a simulation scenario of 25% erosion control funds shows a trend of increasing production land area and tackled land area followed by a decrease in annual erosion weight. The economic sustainability model obtained results at the end of the projected year showing farm revenues IDR 63,591,396 (USD1 ≈ IDR14.27 thous. in average in 2021). This means that the higher the acceptance value, the farming can provide economic welfare for farmers.
Źródło:
Journal of Water and Land Development; 2022, 55; 56--59
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Impact of rainfall trends on flood in Agnéby watershed
Autorzy:
Konin, N’Da Jean Claude
N’go, Yao Alexis
Soro, Gneneyougo Emile
Goula, Bi Tié Albert
Powiązania:
https://bibliotekanauki.pl/articles/2073726.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
Agnéby watershed
flood
hydro-rainfall hazard
Ivory Coast
rainfall trend
Opis:
The aim of this study is to analyse the spatio-temporal evolution of hydro-rainfall variables in the Agnéby watershed in a disturbed climatic context. Rainfall data from the stations of Arrah, Bongouanou, M’Batto, Akoupé, Céchi, Agboville, Adzopé, Sikensi, Abidjan Airport and Dabou as well as hydrometric data from the stations of Agboville, Offoliguié, M’Bessé and Guessiguié were used. The methodological approach is based on the application of independence and trend tests and spatio-temporal analysis of daily rainfall maxima, duration of consecutive rainfall events, number of rainfall events above a threshold and daily flow maxima. The hypothesis of independence justified the relevance of the choice of variables. The trend test showed the dynamic upward evolution of extreme rainfall and the decrease in the duration of consecutive rainy episodes, in the number of rainy episodes and in the flows feeding the main watercourse. Moreover, spatial analysis of daily maximum rainfall amounts above 120 mm, consecutive maximum rainfall amounts above 160 mm and Gumbel rainfall amounts above 190 mm indicated heavy rainfall in the southern part of the watershed. However, a decrease in rainfall is recorded in the areas covered by the stations of Arrah, Bongouanou, M’Batto, Ce chi and Akoupé. An increase in the flood flow calculated from the Generalized Extreme Value (GEV) between 76.60 m3∙s-1 and 225.70 m3∙s-1 is presented in the main river. The spatio-temporal variation in annual rainfall heights showed a high rainfall in the southern part of the watershed with a decrease in rainfall over the decades (1976-1985 and 1996-2005) followed by an increase over the decades (1986-1995 and 2006-2015). Despite the general decrease in rainfall, extreme rainfall has become frequent, causing flooding in the watershed.
Źródło:
Journal of Water and Land Development; 2022, 52; 9--20
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Regionalisation of watersheds with respect to low flow
Autorzy:
Cupak, Agnieszka
Michalec, Bogusław
Powiązania:
https://bibliotekanauki.pl/articles/2174343.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
cluster analysis
low flow
regional regression
residual pattern approach
watershed
Opis:
The aim of the study was to compare two grouping methods for regionalisation of watersheds, which are similar in respect of low flow and chosen catchments parameters (physiographic and meteorological). In the study, a residual pattern approach and cluster analysis, i.e. Ward’s method, were used. The analysis was conducted for specific low flow discharge q95 (dm3∙s-1∙km-2). In the analysis, 50 catchments, located in the area of the upper and central Vistula River basin, were taken. Daily flows used in the study were monitored from 1976 to 2016. Based on the residual pattern approach (RPA) method, the analysed catchments were classified into two groups, while using the cluster analysis method (Ward’s method) - into five. The predictive performance of the complete regional regression model checked by cross-validation R2cv was 47% and RMSEcv= 0.69 dm3∙s-1∙km-2. The cross validation procedure for the cluster analysis gives a predictive performance equal to 33% and RMSEcv= 0.81 dm3∙s-1∙km-2. Comparing both methods, based on the cross-validated coefficient of determination (R2cv), it was found that the residual pattern approach had a better fit between predicted and observed values. The analysis also showed, that in case of both methods, an overestimation of specific low flow discharge q95 was observed. For the cross-validation method and the RPA method, the PBIAS was -10%. A slightly higher value was obtained for the cross-validation method and models obtained using cluster analysis for which the PBIAS was -13.8%.
Źródło:
Journal of Water and Land Development; 2022, 55; 47--55
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Soil erosion prediction and risk assessment using RUSLE model and GIS techniques in the Nangka watershed
Autorzy:
Saadi, Yusron
Mardiana, Sus
Pradjoko, Eko
Powiązania:
https://bibliotekanauki.pl/articles/2174352.pdf
Data publikacji:
2022
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
conservation measures
erosion hazard level
GIS techniques
RUSLE
soil erosion
watershed
Opis:
Soil erosion in the Nangka watershed has always been a matter of concern. Over the last decade, soil erosion has led to continuous environmental problems. A thorough examination of the extent of the problem was required to identify an appropriate soil conservation strategy within the watershed. This study was conducted to observe erosion rates and map out the erosion hazard level. Erosion predictions were analysed by using the Revised Universal Soil Loss Equation (RUSLE) model with the help of ArcGIS software. RUSLE was selected because of its quantitative ability to estimate average annual soil erosion and its compatibility with the GIS interface. The potential hazard of soil erosion was classified and ranked into five class categories as set by the national authority. The results reveal that the Nangka watershed is prone to soil erosion with the annual average values ranging from 1.33 Mg·ha-1·y-1 to 2472.29 Mg·ha-1·y-1. High soil erosion rates of 9.8% are in severe (class IV) and very severe (class V) conditions, primarily in the upper course of the watershed. The low annual average of soil erosion (class I and class II), which accounted for 75.95% of the total erosion, mostly took place in the steepness below 35%. The remaining area of 14.25% within the watershed is in moderate condition (class III). It is expected that the results of this study will help the authority in the implementation of soil conservation measures.
Źródło:
Journal of Water and Land Development; 2022, 55; 185--191
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Atikamekw and Euro-Canadian Territorialities around the Saint-Maurice River (1850–1930)
Autorzy:
Castonguay, Stephane
Samson, Hubert
Powiązania:
https://bibliotekanauki.pl/articles/2076951.pdf
Data publikacji:
2021-09-30
Wydawca:
Wydawnictwo Uniwersytetu Śląskiego
Tematy:
Canada
Saint-Maurice River
Atikamekw
territory
watershed
industrialization
Opis:
This essay focuses on the processes of territorialization, deterritorialization and reterritorialization through which Euro-Canadian society extended its control along the valley of the St. Maurice River between 1850 and 1930. That territory had been settled by the Atikamekw people where they had established their hunting and fishing grounds for centuries. However, the Atikamekw people were confronted by environmental and technological transformations around the St. Maurice River with the implementation of sociotechnical systems during that time period, as two successive phases of industrialization based on specific water use brought along a proliferation of urban centers and the arrival of the large-scale industry. This was particularly the case when the proliferation of hydroelectric dams along the St. Maurice River and its tributaries followed the construction of fluvial infrastructure to facilitate the floating of wood pulp harvested in the upper basin of the river. Not only did the technical activities surrounding the construction of hydroelectric facilities materially transform the St. Maurice River watershed, they also allowed a symbolic appropriation of the land by the production of maps and surveys that ‘erased’ the presence of the Atikamekw. Physical and symbolic boundaries resulting from these new forms of organization and configuration of the territory restricted the spatial practices and representations of the Atikamekw. Logging confined these people within isolated enclaves (the so-called “Indian reserves”), while dams bypassed their networks of exchange and communication. The aim of this essay is to understand the conflicts between the territorialities of the Atikamekw and that of the Euro-Canadians by focusing on the place of water uses within the geographical imaginations and the land use patterns of these populations.
Źródło:
Review of International American Studies; 2021, 14, 1; 25-47
1991-2773
Pojawia się w:
Review of International American Studies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Comparing automatic baseflow separation filters on three watersheds in the urbanised area of East Java, Indonesia
Autorzy:
Indarto, Indarto
Hardiansyah, Mujiono
Sujarwo, Mohamad Wawan
Powiązania:
https://bibliotekanauki.pl/articles/1841976.pdf
Data publikacji:
2021
Wydawca:
Instytut Technologiczno-Przyrodniczy
Tematy:
baseflow
East Java
recursive digital filter
RDF
separation
urbanised area
water management
watershed
Opis:
Baseflow is the primary source of water for irrigation and other water needs during prolonged dry periods; accurate and rapid estimation of baseflow is therefore crucial for water resource allocation. This research aims to estimate baseflow contribution during dry periods in three small watersheds in East Java: Surabaya-Perning (114 km2), Lamong-Simoanggrok (235 km2), and Bangsal-Kedunguneng (26 km2). Six recursive digital filters (RDFs) algorithms are explored using a procedure consisting of calibration, validation, evaluation and interpretation. In this study, the period of July to September is considered as the peak of the dry season. Moreover, data for the period 1996 to 2005 is used to calibrate the algorithms. By yearly averaging, values are obtained for the parameters and then used to test performance during the validation period from 2006 to 2015. Statistical analysis, flow duration curves and hydrographs are used to evaluate and compare the performance of each algorithm. The results show that all the filters explored can be applied to estimate baseflow in the region. However, the Lyne–Hollick (with RMSE = 0.022, 0.125, 0.010 and R2 = 0.951, 0.968, 0.712) and exponentially weighted moving average or EWMA (with RMSE = 0.022, 0.124, 0.009 and R2 = 0.957, 0.968, 0.891) for the three sub-watersheds versions give the best performance.
Źródło:
Journal of Water and Land Development; 2021, 50; 130-140
1429-7426
2083-4535
Pojawia się w:
Journal of Water and Land Development
Dostawca treści:
Biblioteka Nauki
Artykuł

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