scholarly journals Land Use Suitability Analysis for Sustainability of Water Resources

2021 ◽  
Author(s):  
Nazlı Yıldız Dönmez ◽  
Nilüfer Kart Aktaş
Keyword(s):  
Land Use ◽  
Drinking Water ◽  
Water Resources ◽  
Housing Demand ◽  
Natural Ecosystem ◽  
Ecological Planning ◽  
Suitability Analysis ◽  
Residential Areas ◽  
Ecological Data ◽  
Agricultural Areas

Abstract Cities are developing and spreading in an unplanned way with urbanization and rapid population growth. Natural resources such as forests and agricultural lands and water resources are the primary sources that are changed and consumed due to urbanization. This situation poses serious threats especially on drinking water basins. The aim of this study is to identify the threats of urbanization pressure on the basins, to analyze the changing landscapes and to determine suitable areas for settlement and agricultural areas for the sustainability of the basin. Sapanca Basin, chosen as the study area, is a crucial drinking water basin for Turkey. The reason for choosing this area is that the basin is under the pressure of construction as a result of the increasing population and secondary housing demand in recent years, and this situation shows a visible change in the landscapes of the basin. In this context, suitability analyzes were made for the determination of settlement and agricultural areas in order to ensure the ecological sustainability of the basin and to give a direction of the development of the basin. These analyzes have been made by considering McHarg's suitable land use method in ecological planning. For suitability analysis, ecological data have been synthesized and suitability maps have been formed by overlay method in GIS environment. Land use maps were produced for the basin and these maps were compared with the environmental plan. It has been determined that a large part of the basin is not suitable for settlement. As a result, it has been determined that the residential areas in the basin increased by 200% between the years 2000-2018. This increase was especially on forest areas and agricultural areas. As a result of these changes, the landscape is fragmented and its natural ecosystem is deteriorated. With the study, the current situation of settlement and agricultural areas in the basin was interpreted and suggestions were developed on how these areas should develop in the basin.

scholarly journals Assessing Impacts of Climate Variability and Reforestation Activities on Water Resources in the Headwaters of the Segura River Basin (SE Spain)

2018 ◽  
Vol 10 (9) ◽  
pp. 3277 ◽  
Author(s):  
Javier Senent-Aparicio ◽  
Sitian Liu ◽  
Julio Pérez-Sánchez ◽  
Adrián López-Ballesteros ◽  
Patricia Jimeno-Sáez
Keyword(s):  
Climate Change ◽  
Land Use ◽  
Water Resources ◽  
River Basin ◽  
Assessment Tool ◽  
Forest Area ◽  
Se Spain ◽  
Monthly Streamflow ◽  
Agricultural Areas ◽  
Water Assessment

Climate change and the land-use and land-cover changes (LULC) resulting from anthropic activity are important factors in the degradation of an ecosystem and in the availability of a basin’s water resources. To know how these activities affect the quantity of the water resources of basins, such as the Segura River Basin, is of vital importance. In this work, the Soil and Water Assessment Tool (SWAT) was used for the study of the abovementioned impacts. The model was validated by obtaining a Nash–Sutcliffe efficiency (NSE) of 0.88 and a percent bias (PBIAS) of 17.23%, indicating that SWAT accurately replicated monthly streamflow. Next, land-use maps for the years of 1956 and 2007 were used to establish a series of scenarios that allowed us to evaluate the effects of these activities on both joint and individual water resources. A reforestation plan applied in the basin during the 1970s caused that the forest area had almost doubled, whereas the agricultural areas and shrubland had been reduced by one-third. These modifications, together with the effect of climate change, have led to a decrease of 26.3% in the quantity of generated water resources, not only due to climate change but also due to the increase in forest area.

scholarly journals The Challenge of Social Vulnerability Assessment in the Context of Land Use Changes for Sustainable Urban Planning—Case Studies: Developing Cities in Romania

Land ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 17
Author(s):  
Camelia Sabina Botezan ◽  
Andrei Radovici ◽  
Iulia Ajtai
Keyword(s):  
Land Use ◽  
Case Studies ◽  
Land Use Planning ◽  
Vulnerability Assessment ◽  
Social Vulnerability ◽  
Urban Areas ◽  
Land Use Changes ◽  
Residential Areas ◽  
Specific Vulnerability ◽  
Agricultural Areas

Urban growth triggers massive changes in land use cover, exacerbating extreme natural and technological events. In order for land use planning to be efficient, it requires the integration of comprehensive risk and vulnerability assessment. This paper aims to create a bridge between the existing vulnerability theories and their implementation in land use planning policies and proposes an innovative approach to determine whether the changes in the territorial dynamics of cities draw considerable changes in communities’ social vulnerability. The methodology identifies and selects three case studies from the Urban Atlas inventory, representative of the dynamics of large Romanian cities, taking into consideration the following hazards: earthquakes, floods, and technological hazards. Vulnerability was then assessed by assigning each land use class a specific vulnerability level. The methodology involved assessing the level of vulnerability specific to the situation in 2018 compared to 2006. The results showed that major changes in land use are related to the transition of areas with a low level of vulnerability to areas with a higher level of vulnerability as a result of the urban areas expansion to the detriment of natural and agricultural areas. This is generally translated into a higher degree of vulnerability due to an increased density of artificial elements and of population in the residential areas. The findings of the study of territorial dynamics in the proximity of large industrial operators did not reveal a tendency that differed from the general trend. Although many territorial changes have been observed in the period 2006–2018, it is necessary to extend the analysis, with the issue of the new versions of the Urban Atlas, to confirm the identified trends and to express the up-to-date situation.

scholarly journals Case study of extracting soil and land use maps to determine agricultural best management practices that can be applied to prevent erosion and fertile soil loss

2020 ◽  
Vol 61 (4) ◽  
pp. 313-327
Author(s):  
Akıner Ernur
Keyword(s):  
Land Use ◽  
Best Management Practices ◽  
Management Practices ◽  
Assessment Tool ◽  
Management Practice ◽  
Global Climate ◽  
Residential Areas ◽  
Filter Strips ◽  
Land Type ◽  
Agricultural Areas

The Büyük Melen river in the Melen Basin meets Istanbul's drinking water needs. Protecting the basin against nutrient pollution is vital in this regard as well. This study focuses on the best possible management practice (BMPs) in the Melen Basin to reduce the export of nutrients from the agricultural areas. A region comprising industrial, farming, and residential zones is the Melen basin. There is a forecast of global climate change in Turkey, and scientists and also governors must know which areas are no longer farming zones and which will be more appropriate for agriculture. Turkey's territory is a high-risk desertification area. In Melen Basin, the soil type and land use properties have been determined and mapped using GIS and Soil and Water Assessment Tool (SWAT). Buffer BMP filter strips can be used effectively for nutrient protection that can be carried from residential areas and motorways by runoff. The region in the basin is steep, and its clay and sandy soil structures are ideal for parallel terraces, grade stabilization, strip, and contour cultivation. Unless the ground can not retain or store water, the soil can undergo sudden floods, causing an erosion of the soil's productive surface layer. When we protect the land, this condition is reduced. The land type and land use mapping should be drawn up as soon as possible for the remaining Turkish basins by scientific methods. This research is intended to be an illustration for researches on other agricultural basins in Turkey and the world for this reason.

scholarly journals Application of electrical Tomography for the hydrogeological study of the Fez-Taza corridor, Case of Bir Tam-Tam(Morocco)

2021 ◽  
Vol 298 ◽  
pp. 05003
Author(s):  
Hassnae Faiz ◽  
Anasse Benslimane ◽  
Mohamed Chibout ◽  
Mohamed El Mokhtar ◽  
Fatima Zahra Faqihi ◽  
...  
Keyword(s):  
Drinking Water ◽  
Water Resources ◽  
Geophysical Methods ◽  
Dolomitic Limestone ◽  
Geological Data ◽  
Electrical Tomography ◽  
Geophysical Exploration ◽  
Hydrogeological Study ◽  
Drilling Data ◽  
Agricultural Areas

The present work contributes to the multidisciplinary geological, hydrogeological, and geophysical exploration of groundwater in the Bir Tam-Tam region of the Fez-Taza corridor. Our main objective is to release water resources in our study area to supply drinking water in the region and irrigation of agricultural areas. Potential zones are located at the Lias fracturing zones. This study is interested in understanding the hydrogeological context of the study area through geophysical methods such as Electrical Tomography. The comparison of geological data, Drilling data, and the interpretation of the results of electrical Tomography have made it possible to highlight the geoelectric levels likely to constitute a potential aquifer and to locate possible structural accidents (faults) affecting the dolomitic limestone formations of Lias that could drain groundwater.

scholarly journals Klasifikasi Tutupan Lahan Peta Rupabumi Indonesia dalam Identifikasi Kesesuaian Kawasan Permukiman di Kalimantan Tengah

2021 ◽  
Vol 1 (2) ◽  
pp. 63-73
Author(s):  
I Wayan Gede Krisna Arimjaya ◽  
Adi Wibowo
Keyword(s):  
Land Use ◽  
Land Cover ◽  
Land Cover Classification ◽  
Topographic Map ◽  
Suitability Analysis ◽  
Residential Areas ◽  
Central Kalimantan ◽  
Land Use Suitability

Berdasarkan Katalog Unsur Geografis Indonesia (KUGI), Peta Topografi Indonesia (RBI) memiliki 6 kategori unsur dengan 152 unsur klasifikasi tutupan lahan. Oleh karena itu, untuk keperluan analisis kesesuaian penggunaan lahan, klasifikasi tutupan lahan RBI perlu disederhanakan. Penelitian ini bertujuan untuk menyederhanakan klasifikasi kategori unsur tutupan lahan RBI dan menganalisis kesesuaian kawasan pemukiman berdasarkan variabel tutupan lahan dan penggunaan lahan. Studi kasus klasifikasi tutupan lahan dan kesesuaian penggunaan lahan untuk pemukiman telah dilakukan di Provinsi Kalimantan Tengah. Hasilnya, klasifikasi tutupan lahan Provinsi Kalimantan Tengah dikelompokkan menjadi 15 kategori. Sebagian besar tutupan lahan di Kalimantan Tengah adalah hutan dengan luas mencapai 65%. Sementara itu, kesesuaian kawasan permukiman berdasarkan variabel tutupan lahan dan penggunaan lahan menyebar mengikuti sebaran spasial semak belukar dan lahan gundul seluas 16% Kalimantan Tengah. Based on th Indonesian Geographical Feature Catalogue (KUGI), the Indonesian Topographic Map (RBI) has 6 feature categories with 152 land cover classification features. Therefore, for land-use suitability analysis purposes, the RBI land cover classification needs to be simplified. This study aims to simplify the classification of RBI's land cover element categories and analyze the suitability of residential areas based on land cover and land-use variables. A case study of land cover classification and land-use suitability for settlements was conducted for the Central Kalimantan province. As a result, the land cover classifications of Central Kalimantan Province are grouped into 15 categories. Most of the land cover in Central Kalimantan is the forest with covering 65% of the area. Meanwhile, the suitability of residential areas based on land cover and land use variables spread following the spatial distribution of shrubland and bare land covering 16% of Central Kalimantan.

scholarly journals Study on land use changes, causes and impacts by remote sensing, GIS and Delphi methods in the coastal area of Ca Mau province in 30 years

2020 ◽  
Vol 61 (4) ◽  
pp. 36-45
Author(s):  
Hanh Hong Tran ◽  
Anh Van Tran ◽  
Nghi Thanh Le ◽  
Keyword(s):  
Remote Sensing ◽  
Land Use ◽  
Land Cover ◽  
Land Use Changes ◽  
Cultivated Plants ◽  
Natural Ecosystem ◽  
Residential Areas ◽  
Change Analysis ◽  
Consensus Analysis ◽  
Spatio Temporal

The main aim of this paper is to assess the spatio-temporal changes of land cover/land use, as well as their causes and impacts of the changes in Phu Tan district of Ca Mau province in 30 years from 1989 to 2018. Multi-temporal remote sensing satellite images (Landsat) were collected, and classified using supervised method. After validation and post classification, they are mapped for analysing land use/land cover change analysis in three decades. The accuracies of the land cover/land use maps for three time intervals were all more than 80%. Delphi method consensus analysis of expert opinion was applied in 2 rounds of survey with the consultancy of eight experts. Overall, the results show that over the last 30 years, the areas of cultivated plants and water bodies significantly decreased. In contrast, aquaculture ponds, mangrove forest, and residential areas substantially increased. These changes are driven by polical, demographic, socioeconomic and environmental factors. The major impacts include water quality, bussiness and service, and natural ecosystem. The results of this study will contribute to providing a panoramic view of the design of economic, social and environmental policies to ensure sustainable development at the district level.

Three Types of Approaches to Controlling Non-Point Source Pollution of Agrochemicals from Golf Links in Water Resources Management

1993 ◽  
Vol 28 (3-5) ◽  
pp. 549-559 ◽  
Author(s):  
Tohru Morioka
Keyword(s):  
Land Use ◽  
Drinking Water ◽  
Water Resources ◽  
Standard Setting ◽  
Quantitative Risk Assessment ◽  
Water Quality Control ◽  
Assessment Approach ◽  
Regulatory Approach ◽  
Water Resources Conservation ◽  
Resources Conservation

In recent years Japan has had an opportunity to develop a strategy to control diffused pollution of agrochemicals in watersheds upstream of drinking water intakes. Three types of approaches to controlling probable pollution have been examined. These are (1) risk based assessment approach, (2) regulatory approach supported by standard setting and (3) planning based guide to land use. In this paper, based on the results of pilot studies in several golf links, the practical procedures of these approaches are systematically structured. First, risk-based assessment approach includes typical exposure assessment and quantitative risk assessment (QRA) coupled with fate analysis of runoff into reservoirs. The basic process of QRA of indicative herbicides, insecticides and fungicides, generated the result that additional cancer risk would be around minus 5-6 order of life time risk for citizens to drink water from reservoirs receiving contaminated river water. Second, appropriate standard setting enhances a reasonable regulatory approach. In 1990, concentration of twenty agrochemicals in effluents from golf links and rivers at receiving outlets from golf links were evaluated in a nation-wide program in terms of the ratios of samples having higher concentrations than the tentative quality standard. Both seasonal change of observed concentration in dry weather and high concentration in rainfall events are evaluated. Concerning a planning based guide to land use, zoning of forest conservation districts for water resources conservation would be responsible for appropriate land use management and water quality control. The author proposed the skeleton of a water resources conservation plan for safe drinking water supply for a local government as a client, especially emphasizing land use suitability mapping, development guides and mitigation techniques.

Drinking water quality and protection of resources

2010 ◽  
Vol 1 (1-2) ◽  
pp. 51-54
Author(s):  
J. Fettig
Keyword(s):  
Water Quality ◽  
Drinking Water ◽  
Water Resources ◽  
River Water ◽  
Spring Water ◽  
Public Water Supply ◽  
Legal Requirements ◽  
Reservoir Water ◽  
Water Lake ◽  
Treatment Step

Abstract The structure of public water supply in Germany and the water resources used are briefly described. An overview over the legal requirements for drinking water is given, and the sources for contaminants are outlined. Then the multiple-barrier approach is discussed with respect to the resources groundwater and spring water, lake and reservoir water, and river water. Examples for treatment schemes are given and the principle of subsurface transport of river water as a first treatment step is described.

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