scholarly journals Using microbiological tracers to assess the impact of winter land use restrictions on the quality of stream headwaters in a small catchment

2016 ◽  
Vol 541 ◽  
pp. 949-956 ◽  
Author(s):  
Raymond M. Flynn ◽  
Jenny Deakin ◽  
Marie Archbold ◽  
Hugh Cushnan ◽  
Kate Kilroy ◽  
...  
Keyword(s):  
Land Use ◽  
Small Catchment ◽  
The Impact

scholarly journals DAMPAK PERUBAHAN GUNA LAHAN TERHADAP KEMAMPUAN RESAPAN AIR (KASUS: KOTA SAMARINDA)

2019 ◽  
Vol 15 (1) ◽  
pp. 70 ◽  
Author(s):  
Warsilan Warsilan
Keyword(s):  
Land Use ◽  
Catchment Area ◽  
Infrastructure Development ◽  
City Development ◽  
Water Catchment Area ◽  
East Kalimantan ◽  
City Culture ◽  
Water Catchment ◽  
The Impact

As the capital of the province of East Kalimantan, Samarinda City developments has a rapid progress from year to year. Samarinda City Development has a tendency oriented towards infrastructure development without regard to the existence of the quality of the existing environment. Imbalance of development in Samarinda city is to start decreasing the water catchment area, so its make increasing intensity of flood in the Samarinda City. The purpose of this study was to analyze the impact of changes in land use in the Samarinda city on the ability of the water catchment area. This research method using descriptive approach, the data collection system of primary and secondary. Intensity flood in the Samarinda city  is increasing from year to year, this condition happened as a problem that always occurs during the rainy season. Current development trends, always take an area that should be an infiltration  area for Samarinda City. Culture and inadequate infrastructure conditions such as lack of system of drainage and polder, was another factor causing the high intensity of flood  in Samarinda City. Therefore, the relevant regulations development guidelines for Samarinda  City must consider all aspects of planning, in this case especially the important of a balance of cultivated land and protected areas or zones.Keywords: Changes in land use; intensity of puddles; Samarinda

scholarly journals Ecosystem Services Dynamics in Bogor Regency

2021 ◽  
Vol 53 (2) ◽  
Author(s):  
Sri Lestari Munajati ◽  
Hariadi Kartodihardjo ◽  
Muhammad Buce Saleh ◽  
Nurwadjedi Nurwadjedi
Keyword(s):  
Land Use ◽  
Ecosystem Services ◽  
Open Space ◽  
Flood Management ◽  
Analytic Hierarchy ◽  
Land Facets ◽  
The Impact ◽  
Hierarchy Process ◽  
Supply Water

The decline in the quality of ecosystem services in Bogor Regency is indicated by the existence of various natural disasters in recent years. Prudent development must be carried out to minimize the impact of a decrease in the ecosystem services index. The purpose of this research is to map ecosystem services for food supply, water supply, water and flood management, and tourism aspects within 2000-2017. The data used were land cover and land facet maps at a scale of 1:25,000 obtained from BIG, accompanied by a reinterpretation process. The data sources were Indonesia's topographic maps (RBI), Citra SPOT 7, DEMNAS, and field surveys. The ecosystem services index (ESI) is calculated based on an analysis of changes in land use and land facets. The value of ESI was weighted using analytic hierarchy process approaches to each of the variables assessed by experts. The results showed that the largest changes in land use occurred in residential and forest areas. The residential area increased by 1.96%, while the forest area decreased by 1.8% in 17 years. Bogor Regency is dominated by forest and rice fields which are spread over four main landforms, namely volcanic, structural, fluvial, and karst. The most significant increase of 5.65% was found in the clean water provisioning function, while the most significant decrease of 38.47% was found in the tourism and ecotourism sector. Accumulatively, the increase in ESI was 23%, while the decrease was 20.64%.  Mitigation efforts that can be done are to maintain the availability of green open space by implementing strong regulations.

scholarly journals Assessing the Impact of land-use types on the groundwater quality: a case study of Mid River Njoro Catchment, Kenya

2020 ◽  
Vol 9 (4) ◽  
Author(s):  
Halake Guyo Rendilicha ◽  
Patrick Home ◽  
James M. Raude ◽  
Charles M. M’Erimba ◽  
Stellamaris Muthoka
Keyword(s):  
Land Use ◽  
Groundwater Quality ◽  
Forest Cover ◽  
Agricultural Land ◽  
Settlement Area ◽  
Mixed Area ◽  
Land Use Types ◽  
The Mean ◽  
The Impact

The study assessed the impact of land-use types on the groundwater quality of the mid River Njoro catchment, Kenya. Groundwater samples were collected from eight boreholes between the period of October 2017 to February 2018 and analyzed for pH, temperature, electrical conductivity, dissolved oxygen, nitrate, ammonium, and total phosphorus. These parameters were used to calculate the Groundwater Quality Index (GQI) value of the study area. The concentration maps (“primary maps I”) were constructed using Kriging interpolation of ArcGIS software from the seven groundwater quality parameters. The “primary maps I” were standardized with the KEBS and WHO standards to the “primary maps II” for ease of integration into a GIS environment. The “primary maps II” were then rated and weighted using a polynomial function to generate “rank maps” before calculating the GQI using spatial analyst tools of ArcGIS software. The land use map was prepared from a high-resolution Google earth satellite imagery of 2015. The mean GQI values for the different land use polygons were calculated and compared using GIS techniques. The GQI ranged from 68.38 to 70.92, indicating a high groundwater quality of mid River Njoro catchment. The major land-use types identified include settlement area, forest cover, agricultural land and mixed area. The agricultural land dominated the study area, followed by settlement area, forest cover and finally mixed area. The mean GQI value in each land use type varied minimally and this could be because of the diffuse nature of the land use types of the study area. Settlement area had low GQI, followed by agricultural land, mixed area and the forest cover had the highest mean GQI value, which corresponds to good quality of groundwater. Even though the variation is insignificant in this particular study, it somehow indicates the adverse effects of different land use on the quality of groundwater.

scholarly journals Avaliação da influência do uso e cobertura da terra na qualidade das águas superficiais da bacia hidrográfica do rio Pirapozinho (SP) (Evaluation of the effects of land use and occupation on superficial water quality of the hydrographic basin of the Pirapozinho river (SP))

2019 ◽  
Vol 12 (3) ◽  
pp. 738
Author(s):  
Bruno Magro Rodrigues ◽  
Lucas Prado Osco ◽  
Patricia Alexandra Antunes ◽  
Ana Paula Marques Ramos
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Sustainable Management ◽  
Hydrographic Basin ◽  
Crop Fields ◽  
Management Actions ◽  
Production Water ◽  
The Impact ◽  
Effects Of Land Use

A ocupação extensiva e, por vezes, indevida do solo pode resultar em uma série de problemas ambientais que aceleram a degradação de uma bacia hidrográfica, com consequências diretas na qualidade dos seus recursos hídricos. Esse trabalho avalia o impacto do uso e cobertura da terra em parâmetros quantitativos e de qualidade das águas superficiais da bacia hidrográfica do rio Pirapozinho. A produção cartográfica consistiu de mapa de uso e cobertura da terra, declividade, rede de drenagem, mapa de área de preservação permanente e mapa de Índice de Qualidade da Água (IQA). Tanto a coleta quanto as análises das águas superficiais da bacia foram desenvolvidas seguindo os procedimentos do Standard Methods. Os resultados das análises foram comparados com os valores de referência CONAMA, n° 357/05, alterada pela Resolução 410/2009 e pela 430/2011, sendo os padrões estabelecidos para rios de classe 2, mesma classe que se enquadra os corpos hídricos inseridos na bacia em estudo. Conclui-se que há um desequilíbrio ambiental na bacia do rio Pirapozinho. O mapa de uso e cobertura aponta que aproximadamente 90% da área da bacia encontra-se ocupada por pastagem e culturas. Outro aspecto é que mais de 84% da área de preservação permanente encontra-se desprovida de vegetação arbórea. Embora o mapa do IQA revele que a água da bacia possa ser classificada como boa (IQA entre 52 e 79) predominantemente, as análises laboratoriais apontam que há pontos na área com contaminação. Isto pode ser atribuído a atividades industriais e agropastoris desenvolvidas na bacia em estudo. Recomenda-se ações de manejo sustentável na bacia do rio Pirapozinho para a recuperação dos seus recursos naturais. A B S T R A C TExtensive and unduly occupation of soil may result in several environmental problems those contribute to accelerate the degradation of a hydrographic basin bringing diretly consequences to quality of its water resources. This paper evaluates the impact of land use and occupation on quantitative parameters and of superficial waters quality of the hydrographic basin of the Pirapozinho river. The cartographic products designed consisted of land use and occupation map, declivitity map, drainage network map, permanent preservation area map and map of Water Quality Index (WQI) of hydrographic basin. Both collection and analysis of the superficial waters samples were developed following the Standard Method procedure. The results of the laboratorial analyses were compared with the reference values at CONAMA 357/05 and 430/11 resolutions. We conclude that there is an environmental disequilibrium at the hydrographic basin of the Pirapozinho river. The land use and occupation map shows that approximately 90% of the area of the basin is occupied by pasture and crop fields. Other finding is that there is no arboreal vegetation in 84% of the permanent preservation area of the hydrographic basin. Although the WQI map revels that water of the basin can be classified as good (WQI among 52 and 79) predominately, the laboratorial analyses point out taht there is some points in area with contamination of water. This may be related to the industrial and agricultural activities performed in the area. We recommend sustainable management actions in the Pirapozinho river basin to recovery of its natural resources.Keywords: Cartographic production; water quality; environmental analysis; hydrographic basin.

scholarly journals The impact of land use on the water quality of foothill microcatchment areas

2008 ◽  
Vol 40 (1) ◽  
pp. 27-37
Author(s):  
Andrzej Misztal ◽  
Marcin Kuczera
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Water Samples ◽  
Negative Influence ◽  
Rural Settlements ◽  
Quality Of Water ◽  
Catchment Areas ◽  
Forested Areas ◽  
The Impact

The impact of land use on the water quality of foothill microcatchment areas The impact of land use on the water quality of foothill microcatchment areas. In this paper a comparison is made between the impact of land use methods on the quality of water in the streams which drain various catchment areas. For this purpose three microcatchments were selected which are located in agricultural, rural settlements, and forested areas. Water samples were physically and chemically analysed in order to determine: nitrates, nitrites, ammonia, phosphates, sulphates, chlorides, calcium, magnesium, dissolved oxygen, reaction and conductivity. The above studies were conducted in the 2006 and 2007. Our analysis of the collected materials allows us to affirm that land use methods have a significant impact on the water quality of the streams which drain the area. Rural settlement has the most negative influence on the water quality, followed by typical agricultural use. Based on the direct quality evaluations of single water samples, it has been found that only water from forested areas can be qualified as belonging to the 1st cleanness class.

scholarly journals Urban Problems, the impact on future cities -A concept for Baghdad future sustainable development-

2016 ◽  
Vol 4 (2) ◽  
pp. 73-93
Author(s):  
سهاد كاظم  عبد الموسوي
Keyword(s):  
Land Use ◽  
Urban Development ◽  
Third World ◽  
Sustainable Urban Development ◽  
Urban Waste ◽  
Sustainable Urbanism ◽  
Effective Transport ◽  
Urban Problems ◽  
The Impact

Urban problems affects both Developed and Third World, the problems include necessity for land, energy consumption and urban waste, these problems affect the environment and ecology system and decrease the quality of healthy inhabitants living and there is a lack in sustainable treatment for these problems, the research hypothesize that sustainable urban development can be achieved if urban planning consider an effective transport system and infra structure with the support of land use administrational tools, the research aims to define future sustainable urban development schemes with a future description for sustainable Baghdad urban future, the research defines urban problems and the available treatments to outline the meaning of sustainable urbanism.

scholarly journals THE ASSESSMENT OF TECK'S CASTLE PROJECT BASED ON FIVE VALUED ECOSYSTEM COMPONENTS

InterConf ◽  
2021 ◽  
pp. 413-421
Author(s):  
Jingyao Su ◽  
Simon Courtenay
Keyword(s):  
Water Quality ◽  
Land Use ◽  
Surface Water ◽  
Fish Habitat ◽  
Surface Water Quality ◽  
Protective Equipment ◽  
Quality Model ◽  
Treatment Facilities ◽  
The Impact

Teck's Castle Project is the largest coal mine project to be mined in Canada. This article is an environmental assessment of Teck's Castle Project based on five valued ecosystem components (VECs) including: Surface Water Quality, Fish and Fish habitat, Vegetation, Local Employment, and Land Use. I proposed to use a surface water quality model to detect the degree of pollution of the water quality of the surrounding rivers and use an economic multiplier to measure the impact on local economic employment. Through research, I found that the water treatment facilities used by Teck Coal Limited can effectively alleviate the impact of the project on the water quality of the surrounding rivers, and I recommended that Teck Coal Limited wear protective equipment to protect their health when working.

scholarly journals Effect of land use changes on water run-off from a small catchment in the Czech Republic

2016 ◽  
Vol 35 (1) ◽  
pp. 78-89 ◽  
Author(s):  
Pavel Ondr ◽  
Jiří Pečenka ◽  
Jakub Polenský ◽  
Jiří Ciml
Keyword(s):  
Land Use ◽  
Agricultural Sector ◽  
Land Use Changes ◽  
Agricultural Area ◽  
Small Catchment ◽  
The Czech Republic ◽  
Financial Conditions ◽  
Run Off ◽  
Industrial Use ◽  
The Impact

Abstract The changes in the landscape during past years were affected mainly by political and financial conditions in the agricultural sector as well as the future changes probably will be. For this study various scenarios of changes in land use in the small catchment caused by human activity were simulated. Several scenarios were focused on changes of agricultural area to urbanized landscape and also on industrial use of several plots. The aim of this study was to model and assess the impact of human-induced landscape changes on run-off from small catchments in the traditional agricultural area. It can be said, that more than the change of land use itself, changed management of these areas affects the water run-off more. The hypothetical transfer of significant part of the catchment area or the localities with infiltration vulnerable zones into urbanized paved space is the only exception. This change mainly affects the rate of discharge.

The impact of land use/cover change on storage and quality of soil organic carbon in midsubtropical mountainous area of southern China

2009 ◽  
Vol 19 (1) ◽  
pp. 49-57 ◽  
Author(s):  
Yusheng Yang ◽  
Jinsheng Xie ◽  
Hao Sheng ◽  
Guangshui Chen ◽  
Xu Li ◽  
...  
Keyword(s):  
Land Use ◽  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Southern China ◽  
Mountainous Area ◽  
The Impact

scholarly journals Assessment of land cover resolution impact on flood modeling uncertainty

2020 ◽  
Author(s):  
Jihui Fan ◽  
Majid Galoie ◽  
Artemis Motamedi ◽  
Jing Huang
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Cell Size ◽  
Hydrological Modeling ◽  
Assessment Tool ◽  
Swat Model ◽  
Flood Modeling ◽  
The Impact ◽  
Scs Cn

Abstract The main objective of this paper is to evaluate the impact of land cover resolution, in comparison with the digital elevation model (DEM) resolution, on hydrological modeling outputs. Three different basins in the various resolutions of DEM (12.5, 25, 50, 100, 500 and 1,000 m) and land-use maps (250, 1,000 and 2,500 m) were collected in this study, and the hydrological modeling process was performed using the Soil and Water Assessment Tool (SWAT) model. The soil type resolution was 1,000 m for all basins, and the runoff modeling was done based on the Soil Conservation Service Curve Number (SCS-CN) method. The final model outputs showed that the DEM cell size variations affect significantly the topographical characteristics of a catchment such as area, mean slope, river network and time to concentration which alter the flood modeling outputs especially in hilly watersheds (mean slope more than 15%) up to 15% for a DEM cell size of 1,000 m in comparison to 12.5 m. Also, the resolution and spatial distribution of land cover maps which directly specify SCS-CN values, can change the output simulated runoff results up to 49% for a land cover cell size of 2,500 m in comparison to 250 m. These results indicated that the quality of the land cover map is more important than the quality of DEM in hydrological modeling. Also, the results showed that for an identical land-use cell size, the differences between model outputs using DEM cell sizes less than 100 m were not very significant. Furthermore, in all models by increasing the DEM cell size, the simulated runoff depth was decreased.

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