scholarly journals Evaluation of Eco-Environmental Quality in Qaidam Basin Based on the Ecological Index (MRSEI) and GEE

2021 ◽  
Vol 13 (22) ◽  
pp. 4543
Author(s):  
Haowei Jia ◽  
Changzhen Yan ◽  
Xuegang Xing
Keyword(s):  
Environmental Quality ◽  
Qaidam Basin ◽  
Google Earth ◽  
Southeastern Part ◽  
Ecological Index ◽  
The Past ◽  
Ecological Protection ◽  
Overall Performance ◽  
Wet Climate

As the population has increased and the economy has developed in the Qaidam Basin, the demand for food and energy in the basin has increased, and the contradiction between economic development and ecological protection is gradually becoming prominent. In this study, the eco-environmental quality of the Qaidam Basin from 1986 to 2019 was evaluated and analyzed based on the Modified Remote Sensing Ecological Index (MRSEI) retrieved by the Google Earth Engine (GEE) and meteorological and socioeconomic auxiliary data. The results show that (1) the Qaidam Basin had a lower overall level of eco-environmental quality, with higher eco-environmental quality in the southeastern part of the basin and lower eco-environmental quality in the central and northwestern parts of the basin. (2) During the period of 1986 to 2019, the eco-environmental quality of the Qaidam Basin started to reverse in 2003; it decreased first and then increased, and the overall performance showed an upward trend over the past 34 years. The most obvious changes were in the northwestern, northeastern, southwestern and central parts of the basin. The eco-environmental quality continued to decline in the northwestern and rise in the northeastern and southwestern regions, and in the central part, it decreased first and then plateaued. (3) The eco-environmental quality of the Qaidam Basin was affected by both natural and human factors. From 1986 to 2019, the “warm and wet” climate in the basin promoted the growth of vegetation. Furthermore, the optimization of industrial structures alleviated the pressure of agriculture and livestock and jointly improved the ecological environment in the Qaidam Basin.

scholarly journals KERUSAKAN LAHAN AKIBAT KEGIATAN PENAMBANGAN EMAS TANPA IZIN DISEKITAR SUNGAI SINGINGI KABUPATEN KUANTAN SINGINGI

2019 ◽  
Vol 15 (3) ◽  
Author(s):  
Mailendra Mailendra ◽  
Imam Buchori
Keyword(s):  
Gold Mining ◽  
Image Data ◽  
Google Earth ◽  
Landsat 8 ◽  
Mining Activities ◽  
Vegetation Density ◽  
The Past ◽  
High Level ◽  
Damage Map

Indonesia is one of the countries that has the potential of natural resources other than agriculture, namely mining, especially gold. Gold mining without permits is one of the mining activities which results in a decrease in the quality of the surrounding environment, especially land. The purpose of this study was to look at the land damage that occurred as a result of unlicensed gold mining activities around the Singingi River in the massive Kuantan Singingi Regency in the past two decades. The method used in the analysis is the scoring and overlay method, the data used are Landsat 5 TM and Landsat 8 OLI which are processed using the supervised cllasification method and digitized on screen. Furthermore, as comparative data, surveys and interviews are carried out and utilizing high resolution image data from SPOT images and google earth. The results of this study were found that there was a change in land use from other land uses into unlicensed gold mining land covering an area of 2,680.03 Ha from 2006 to 2018. Then a land damage map with three parameters was produced, namely vegetation density, mine life and type of tailings . Land with a high level of damage covering 699.34 ha, moderate damage 1,501.04 and low damage 479.65. The largest area of land damage occurs in Sungai Paku Village and the smallest village is Pulau Padang.

scholarly journals Mapeamento da Cobertura do Solo com Base nos Princípios do Planejamento da Paisagem Aplicado ao Bairro Cabral, Curitiba/PR (Land Cover Mapping Based on Landscape Planning Principles Applied to Cabral District, Curitiba/PR)

2014 ◽  
Vol 7 (4) ◽  
pp. 731
Author(s):  
Laura Estêvez ◽  
João Carlos Nucci ◽  
Simone Valaski
Keyword(s):  
Urban Planning ◽  
Land Cover ◽  
Environmental Quality ◽  
Vegetation Cover ◽  
Landscape Planning ◽  
Google Earth ◽  
Landscape Classification ◽  
Urban Land Cover ◽  
Made In

O Planejamento da Paisagem aplicado ao meio urbanizado tem como um dos princípios a manutenção ou melhoria da qualidade ambiental urbana. A cobertura do solo urbano é um dos aspectos que interfere na qualidade ambiental. Assim, mapeou-se a cobertura do solo do bairro Cabral, Curitiba/PR e foi elaborada uma chave classificatória (legenda do mapa) destacando aspectos da estrutura de cada paisagem, com inferências sobre a dinâmica e a qualidade ambiental das paisagens do bairro. Foram utilizadas imagens de 2009 do Google Earth e a base cartográfica de 2011 do Instituto de Pesquisa e Planejamento Urbano de Curitiba (IPPUC) na escala 1:25.000. O mapa final, na escala 1:12.500, e a chave classificatória foram trabalhadas no software CorelDRAW X6. As 18 categorias de paisagens identificadas diferem entre si pela presença de espaços edificados, espaços sem edificações, vias de tráfego e terminal de ônibus, sendo a cobertura vegetal um importante aspecto que interferiu na classificação das paisagens. Com a avaliação da qualidade ambiental do bairro Cabral concluiu-se que a presença de corredores de edifícios e de barracões em pontos localizados diminui a qualidade ambiental, mas as áreas de manchas verdes importantes, que representam a cobertura vegetal, atuam como contribuintes para aumentar a qualidade ambiental e devem ser preservadas.  A B S T R A C T The Landscape Planning applied to urbanized areas has as one of the principles the upkeep or improvement of the urban environmental quality. The urban land cover is one of the aspects that interfere in the environmental quality. So that, the land cover of Cabral district, located in Curitiba/PR was mapped and qualifying key (key of map) was organized highlighting the structure aspects of which landscape, with inferences about the dynamic and the environmental quality of the district’s landscapes. It was used Google Earth images (2009) and the cartographic base (2011) from IPPUC (Institut of Research and Urban Planning of Curitiba), scale 1:25.000. The final map, in scale 1:12.500 and the qualifying key were made in software Corel Draw X6. It was identified eighteen categories of landscapes that are differed among themselves by built-up spaces, non-built-up spaces, traffic roads and bus station. The vegetation cover was an important aspect which interfered on the landscape classification. With the environmental quality evaluation of Cabral district it was concluded that the existence of lines of buildings and large sheds, in some specific areas decrease the environmental quality, but the important green spots areas, which represent the vegetation cover, act as contributors to increase the environmental quality and they should be preserved. Keywords:  Urban environmental quality; Landscape classification; Urban planning 

scholarly journals Spatial Modeling of Environmental Quality Change Based on Geographic Information System

2021 ◽  
Vol 887 (1) ◽  
pp. 012016
Author(s):  
I. G. Wiratmaja ◽  
A. W. Sejati
Keyword(s):  
Information System ◽  
Environmental Quality ◽  
Principal Component ◽  
Geographical Information ◽  
Vegetation Density ◽  
Quality Change ◽  
Ecological Index ◽  
Raster Calculator ◽  
Coastal Land

Abstract A coastal area is prone to decrease of environmental quality due to coastal land abrasion and inundation/tidal flood. Several studies have shown that the coastline of Sayung District, Demak Regency, is moving toward the mainland for 6.8 mm/year and the surrounding area is experiencing land subsidence for 5-7 cm/year. These phenomena have consequences to the environmental quality in the area. In this case, this research aims to develop a spatial model using a Geographical Information System (GIS) in describing and predicting changes of environmental quality in Sayung District, Demak Regency. Four variables in a Risk-Screening Ecological Index (RSEI) approach, namely (1) vegetation density, (2) soil moisture, (3) soil quality, and (4) built space and surface temperature were used as indicators of the environmental quality. A raster calculator and Spatial Principal Component Analysis (SPCA) were then used to calculate total value of the environmental quality. This research results that the environmental quality of the study area is decreasing which indicated by the RSEI value of 0.614 (1999), 0.4749 (2009), and 0.3933 (2019). The environmental quality in the study area is also worsened by waterbody expansion.

scholarly journals Development of an Indoor Environmental Quality Assessment Tool for the Rating of Offices in Real Working Conditions

2019 ◽  
Vol 11 (6) ◽  
pp. 1645
Author(s):  
Anna Devitofrancesco ◽  
Lorenzo Belussi ◽  
Italo Meroni ◽  
Fabio Scamoni
Keyword(s):  
Working Conditions ◽  
Environmental Quality ◽  
Assessment Tool ◽  
Well Being ◽  
Indoor Environmental Quality ◽  
Working Space ◽  
Overall Performance ◽  
Operational Phase ◽  
Indoor Comfort

The Indoor Environmental Quality (IEQ) refers to the quality of indoor spaces in relation to the health and well-being of users. IEQ is a holistic concept considering various components of the overall indoor comfort: thermo-hygrometric, lighting, air quality and acoustics. Each component is described through specific performance indicators and benchmarks. The quality of the built environment is assessed at different stages from design to operational phase. The scientific literature reports several case studies related to the assessment of the individual components of the IEQ Tools aimed at the evaluation of the overall IEQ. The paper proposes an assessment tool based on the SB Method (Sustainable Building Method) and the Multi Criteria Analysis for the evaluation of IEQ during the operational phase of a building. Each component of IEQ is analysed through objective indicators and calculation methods. The tool provides two main outcomes: a global score expressing the overall performance of the building from the IEQ perspective; quantitative evaluations of all indoor comfort components through monitoring and measurement of the environmental variables. The above contributes to select intervention areas to optimize indoor design and to identify technologies aimed at ensuring the best IEQ levels for users at the operational stage. The system was applied to an open-plan working space of an office building. Monitoring activities and measurements are carried out to detect the indoor and outdoor variables affecting the IEQ. All aspects of IEQ were analysed and quantified so to evaluate the overall performance of the building and provide data to improve the working conditions.

scholarly journals Evaluation of the Spatiotemporal Variations in the Eco-environmental Quality in China Based on the Remote Sensing Ecological Index

2020 ◽  
Vol 12 (15) ◽  
pp. 2462
Author(s):  
Weihua Liao ◽  
Weiguo Jiang
Keyword(s):  
Remote Sensing ◽  
Environmental Quality ◽  
Eastern China ◽  
Continuous Process ◽  
Western China ◽  
Environmental Damage ◽  
Ecological Index ◽  
Computing Platform ◽  
The Status

The eco-environment is dynamic and shows a continuous process of long-term change. It is helpful for policymakers to know the status of the regional eco-environment through accurate evaluations of the history and current situation of the regional eco-environment. The remote sensing ecological index (RSEI) model of China was established in this study by using four indexes: wetness, greenness, dryness, and heat. Knowledge granulation of the RSEIs were carried out, and a method to determine the weights of the knowledge granulation entropy of the indexes based on their characteristics was proposed. This study used Moderate Resolution Image Spectroradiometer (MODIS) data from the Google Cloud Computing Platform to study and calculate the eco-environmental quality of China from 2000–2017. The overall eco-environmental quality in China tended to improve from 2000–2017, although there were large areas of ecological degradation from 2009–2014. The eco-environment of eastern China was better than that of western China. Most of the national ecological areas were third-level ecological areas, which had moderate environmental quality. Dryness was the most important factor affecting the quality of the eco-environment, followed by greenness, which reflected the increasing environmental damage caused by human activities in China in recent years.

scholarly journals REMOTE SENSING EVALUATION OF ECOLOGICAL ENVIRONMENT OF ANQING CITY BASED ON REMOTE SENSING ECOLOGICAL INDEX

2020 ◽  
Vol XLIII-B3-2020 ◽  
pp. 733-737
Author(s):  
X. Niu ◽  
Y. Li
Keyword(s):  
Remote Sensing ◽  
Urban Area ◽  
Environmental Quality ◽  
Ecological Environment ◽  
Mountainous Area ◽  
Ecological Change ◽  
Ecological Quality ◽  
Ecological Index ◽  
Use Of Resources

Abstract. Figuring out the regional ecological environment quality and ecological change is critical for ecological environment monitoring and management and urban construction planning. Based on the remote sensing ecological index (RESI), we evaluate the ecological quality and ecological change from 1999 to 2019 of Anqing city. Multi-temporal Landsat images are used to extract the four indicators of humidity, vegetation, heat and dryness, respectively. Then the RSEI is calculated by principal component analysis. The results show that the ecological quality of Anqing city declined from 1999 to 2019 and then grew slowly from 2009 to 2019. The eco-environmental quality of Anqing city dropped slightly from 1999 to 2019, and the regions with worse quality grades exceeded those becoming better. Particularly, we find that from 1999 to 2009, the area where the ecological quality became better made up 18.31% of the urban area, while the worse ecological area accounted for 29.68% of the urban area; from 2009 to 2019, the area of improved ecological environment reached 24.35%, while the area of degraded quality constituted 41.36%. Land-use changes dominated eco-environmental quality. The areas of poor eco-environmental quality expanded in residential regions and eco-environmental quality of mountainous area improved since returning cultivated land in steep hills into forest. The RSEI results are expected to provide a quantitative foundation for planning sustainable development and the rational use of resources in Anqing city.

The Environment in the People's Republic of China 50 Years On

1999 ◽  
Vol 159 ◽  
pp. 640-649 ◽  
Author(s):  
Richard Louis Edmonds
Keyword(s):  
Environmental Protection ◽  
Environmental Quality ◽  
Living Standard ◽  
Republic Of China ◽  
The Past ◽  
Past Half Century ◽  
International Diplomacy ◽  
Good Living ◽  
Past Half

This article describes and analyses changes in the environment and related policy developments in the People's Republic over the past 50 years. When discussing the quality of China's environment it must be remembered that the population of the country has doubled over the past half century and the economy has grown rapidly, particularly over the last two decades. Pessimists argue that the current population of over 1,200 million has exceeded the number which can be supported at a good living standard. Despite such views, there has been some ground for optimism in recent years, with China's greater environmental awareness and increased openness, its realization that the environment can be a tool in international diplomacy, and the increasing importation of environmental protection techniques. Yet overall, China has not done enough to maintain environmental quality and has not chosen to make many environmentally friendly transport investments.

scholarly journals ARRIVING AT OPTIMAL COST FOR A SUSTAINABLE PRODUCT USING AN INTEGRATED LCA-SCM MODEL

2021 ◽  
Vol 9 (2) ◽  
pp. 1193-1199
Author(s):  
Suparno Bhatta, Et. al.
Keyword(s):  
Environmental Quality ◽  
Manufacturing Cost ◽  
New Era ◽  
Green Material ◽  
The Past ◽  
Sustainable Products ◽  
Green Materials ◽  
Sustainable Product ◽  
The Cost

Globalization has unleashed a new era of prosperity in economic terms. This has completely changed our outlook towards lifestyle. The recent surge of consumption in the past few decades has led to the escalation in the production of goods which in turn puts a huge burden on the environment. The increasing over consumption of resources has created a sense of urgency to track the level of expenditure as well emissions from a product. One of the major concerns related to the development of green products is the cost factor that comes into play while sourcing the alternate green materials. Identifying the alternate green material increases the overall manufacturing cost for the company. There are a lot of Life Cycle Assessment (LCA) models that look into the environmental quality of a product. Similarly, there are many Supply Chain Management (SCM) models that look into the cost of the product. However very few have researched the combination of both LCA and SCM. There is a need to establish a balance between the cost and the environmental quality of a product. This paper investigates the cost of manufacturing sustainable products by looking into existing LCA and SCM models.                       

scholarly journals Comprehensive Evaluation Model of Environmental Quality in Ecological Reserve

2021 ◽  
Vol 2021 ◽  
pp. 1-7
Author(s):  
Songjia Zhang ◽  
Weiyang Yu ◽  
Teng Chen
Keyword(s):  
Environmental Quality ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Development Trend ◽  
Evaluation Index System ◽  
Entropy Weight ◽  
Ecological Protection ◽  
Ecological Reserve ◽  
Protection Area

The environmental quality of the ecological protection zone directly affects the water quality and air quality of the area, thereby affecting the quality of people’s life. This paper constructs the evaluation index system of the environmental quality of the ecological protection area and determines the classification standards of each index, proposes the extension evaluation method of the environmental quality of the ecological protection area, and uses the entropy weight method to determine the weight of each level of index. Its purpose is to understand the development trend of environmental quality in all aspects of the ecological reserve through the dynamic evaluation of the environmental quality of the ecological reserve, so as to take corresponding countermeasures to promote the healthy development of the area. The constructed model was used to dynamically evaluate the environmental quality of the ecological reserve in Zhangjiakou City from 2008 to 2019. The research results show that the environmental quality gaps in different aspects of the ecological reserve of Zhangjiakou City are relatively large, and the overall regional ecological environment characteristic value is decreasing year by year, reflecting that the environmental quality of the ecological reserve of the region is getting better year by year.

Immunoferritin localization of intracellular antigens in positively stained frozen sections

1978 ◽  
Vol 36 (2) ◽  
pp. 168-169
Author(s):  
K. T. Tokuyasu
Keyword(s):  
Surface Tension ◽  
Water Surface ◽  
Thin Layers ◽  
The Other ◽  
Positive Staining ◽  
Frozen Sections ◽  
The Past ◽  
Ultrathin Frozen Sections ◽  
Definition Of

During the past investigations of immunoferritin localization of intracellular antigens in ultrathin frozen sections, we found that the degree of negative staining required to delineate u1trastructural details was often too dense for the recognition of ferritin particles. The quality of positive staining of ultrathin frozen sections, on the other hand, has generally been far inferior to that attainable in conventional plastic embedded sections, particularly in the definition of membranes. As we discussed before, a main cause of this difficulty seemed to be the vulnerability of frozen sections to the damaging effects of air-water surface tension at the time of drying of the sections.Indeed, we found that the quality of positive staining is greatly improved when positively stained frozen sections are protected against the effects of surface tension by embedding them in thin layers of mechanically stable materials at the time of drying (unpublished).

Sign in / Sign up

Export Citation Format

Share Document