Sustainable Environment最新文献_第10页

Waste segregation and potential for recycling -A case study in Dar es Salaam City, Tanzania 废物分类和回收潜力——以坦桑尼亚达累斯萨拉姆市为例

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/27658511.2021.1935532

J. Kihila, Kris Wernsted, M. Kaseva

{"title":"Waste segregation and potential for recycling -A case study in Dar es Salaam City, Tanzania","authors":"J. Kihila, Kris Wernsted, M. Kaseva","doi":"10.1080/27658511.2021.1935532","DOIUrl":"https://doi.org/10.1080/27658511.2021.1935532","url":null,"abstract":"ABSTRACT Waste segregation is an important component in the waste management chain as it makes it possible to realize effective Reuse, Recycling and Recovery (RRR). Unfortunately, it has received little attention and is normally informally practiced in most developing countries (DC). It is also affected by lack of awareness, weak regulatory frameworks and enforcement, lack of economic incentive and a low priority in planning. This study was conducted in Kimara ward in Dar es Salaam city in Tanzania. It employed interviews, household surveys and waste measurements, to establish the potential for RRR as well as the underlying factors that are related to the community perspectives and strategies for enhancement of RRR. Results show that the generation rate was 0.53 kg/Cap.day and the main type was food waste (>60% of the composition by weight). The study revealed further that reuse and recycling of plastics, electronics and metals are informally practiced and the selling chain is from household to waste collectors to recycling centers and finally to industries. The potential for RRR was found to be high but, it is affected by lack of facilities, inadequate enforcement of the policy as well as lack of awareness and strategies for its promotion. Community perceptions on what could be done to improve segregation include the provision of facilities for waste segregation and financial returns to the community from recycling business could promote RRR. Formulation of strategies to formalize and mainstream RRR into training programmes and adequate enforcement mechanisms are some of the recommended policy actions.","PeriodicalId":29858,"journal":{"name":"Sustainable Environment","volume":"1 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88709334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 17

Association of low birthweight with indoor air pollution from biomass fuel in sub-Saharan Africa: A systemic review and meta-analysis 低出生体重与撒哈拉以南非洲生物质燃料室内空气污染的关系:一项系统综述和荟萃分析

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/27658511.2021.1922185

Girum Gebremeskel Kanno, Robel Hussen kabthymer

{"title":"Association of low birthweight with indoor air pollution from biomass fuel in sub-Saharan Africa: A systemic review and meta-analysis","authors":"Girum Gebremeskel Kanno, Robel Hussen kabthymer","doi":"10.1080/27658511.2021.1922185","DOIUrl":"https://doi.org/10.1080/27658511.2021.1922185","url":null,"abstract":"ABSTRACT Exposure to indoor air pollution (IAP) from cooking with solid fuels affects 2.8 billion people in developing countries, including children and pregnant women. It also increases the risk of adverse pregnancy outcomes such as low birthweight. This review aims to examine the relationship of IAP with low birthweight. A systematic literature search was performed using PubMed, CINAHL, global health and Google Scholar electronic databases. Data analysis was done using STATA Version 14. The heterogeneity of the studies was assessed by using I2 test. A random-effects model was used to estimate pooled odds ratio. The presence of publication bias was checked using the funnel plot and Egger’s test. A total of 129 studies were reviewed, and 6 studies fulfilled the inclusion criteria. A total of 16,761 mother–child pairs from the selected studies were the study population. The result of the meta-analysis indicated that indoor air pollution from biomass fuel use was associated with low birthweight with a pooled odds ratio of 1.74 (95% CI: 1.14–2.66). Mothers living in households that utilize biomass fuel have a 74% additional risk of giving a low birthweight child than mothers who live in households without air pollution from biomass fuel. Indoor air pollution from cooking fuel increases the risk of low birthweight in sub-Saharan Africa. Promoting clean and effective solid fuels at the household level will help to reduce IAP-related adverse health effects, specifically low birthweight.","PeriodicalId":29858,"journal":{"name":"Sustainable Environment","volume":"126 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74291225","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Climate change intensification impacts and challenges of invasive species and adaptation measures in Eastern Ethiopia 气候变化加剧对埃塞俄比亚东部入侵物种的影响和挑战及适应措施

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/23311843.2021.1875555

G. A. Bogale, Tasisa Temesgen Tolossa

引用次数: 9

Analyzing the resilience of urban settlements using multiple-criteria decision-making (MCDM) models (case study: Malayer city) 基于多标准决策(MCDM)模型的城市住区弹性分析(以马来西亚城市为例)

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/27658511.2021.1889083

M. Javari, M. Saghaei, Fahime Fadaei Jazi

{"title":"Analyzing the resilience of urban settlements using multiple-criteria decision-making (MCDM) models (case study: Malayer city)","authors":"M. Javari, M. Saghaei, Fahime Fadaei Jazi","doi":"10.1080/27658511.2021.1889083","DOIUrl":"https://doi.org/10.1080/27658511.2021.1889083","url":null,"abstract":"ABSTRACT The aim of this study is to assess environmental resilience through the analysis of quantitative and qualitative indices on urban settlements in Malayer city, Iran. We used to assess environmental resilience, the natural, accessibility, privacy, and social indices for reducing environmental damages. To analyze the environmental resilience in urban settlements, we use the decision-making matrix, standardization of indicators based on fuzzy method, ideal indicators, matrix coefficient change based on the weight of indices, the ideal positive and negative solutions, distance measure, and the relative proximity of the ideal solution using multi-criteria decision-making method(MCDM). Also, to analyze environmental resilience indexes, we used GIS and TOPSIS software. The results show that the resilience rate in Malayer city shows essential diversity in resilience. Results of the resilience rate show the critical difference from 2.17% in deficient resilience class, 6.14% in low resilience class, 25.67% proper resilience, and 66.02% high resilience. The present study, as a regional pattern, showed the resilience rate in urban settlements using the multi-criteria decision-making method (MCDM).","PeriodicalId":29858,"journal":{"name":"Sustainable Environment","volume":"12 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81149586","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

“Fortune amidst misfortune”: The impact of Covid-19 city lockdowns on air quality “幸灾乐祸”:新冠肺炎疫情对城市空气质量的影响

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/27658511.2021.1885185

E. Aboagye, Justice Attobrah, Nana Adwoa Anokye Effah, Sandylove Afrane, F. Mensah

{"title":"“Fortune amidst misfortune”: The impact of Covid-19 city lockdowns on air quality","authors":"E. Aboagye, Justice Attobrah, Nana Adwoa Anokye Effah, Sandylove Afrane, F. Mensah","doi":"10.1080/27658511.2021.1885185","DOIUrl":"https://doi.org/10.1080/27658511.2021.1885185","url":null,"abstract":"ABSTRACT Air pollution is one of the major causes of health risks as it leads to widespread disease and death each year. Countries have invested heavily in fighting air pollution, arguably without convincing results. The outbreak of the highly infectious disease COVID-19 in December 2019 has been declared a pandemic and a worldwide health crisis by World Health Organization (WHO). Countries resorted to city lockdowns that sternly curtailed personal mobility and economic activities to control the spread of this deadly coronavirus disease. This paper examines the impact of Covid-19 city lockdowns on air quality. The researchers adopted a comprehensive interpretative document analysis for this study, which guided the careful but rigorous examination of air quality and coronavirus data. This method affirmed the authenticity of the information examined and interpreted in the US, Italy and China, the study areas. The study found that Covid-19 city lockdowns have contributed to a significant improvement in air quality within the first four months of the outbreak of Covid-19. National Aeronautics and Space Administration (NASA) had reported that NO2 concentrations in the study areas had reduced significantly using evidence from their Sentinel-5P instrument. Air quality in Covid-19 cities’ lockdowns also improved because of the enforcement of other types of measures enacted to battle the virus. WHO still believes that the amount of NO2 concentration in the atmosphere is still high per their standards and regulations. Based on this, the researchers recommend that governments and other stakeholders put in much effort in terms of legislation to “win the war” against air pollution.","PeriodicalId":29858,"journal":{"name":"Sustainable Environment","volume":"27 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90090531","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 6

Abundance of native rhizobia nodulating cowpea in major production areas of Ethiopia as influenced by cropping history and soil properties 埃塞俄比亚主要产区豇豆根瘤菌丰度受种植历史和土壤性质的影响

IF 2.3

Sustainable Environment Pub Date : 2021-01-01 DOI: 10.1080/27658511.2021.1889084

Erana Kebede, Berhanu Amsalu, A. Argaw, S. Tamiru

{"title":"Abundance of native rhizobia nodulating cowpea in major production areas of Ethiopia as influenced by cropping history and soil properties","authors":"Erana Kebede, Berhanu Amsalu, A. Argaw, S. Tamiru","doi":"10.1080/27658511.2021.1889084","DOIUrl":"https://doi.org/10.1080/27658511.2021.1889084","url":null,"abstract":"ABSTRACT Enumeration of the native rhizobia population is important to determine the abundance of rhizobia in the soil and the achievement of inoculation. In Ethiopia, limited information is available on the population abundance of cowpea nodulating rhizobia. This study aimed to evaluate the population abundance of rhizobia nodulating cowpea and their relation with cropping history and soil properties in cowpea producing areas of Ethiopia. The abundance of rhizobia existing in the soils was assessed by the most probable number technique. The study revealed that the population abundance of rhizobia nodulating cowpea is high, ranging from 3.1 × 104 to 1.0 × 107 rhizobia cells g−1 of soil, and the population varied at each location. Besides, there was no statistically significant correlation between soil physicochemical properties and the rhizobial population. All the investigated soils had been cropped with cowpea in monoculture (sole cowpea), intercropping (mostly with sorghum and maize) and crop rotation for many years. Thus, the higher rhizobia population observed in this study is associated with the season factor and cropping history of the areas. In general, the soils of cowpea production areas in Ethiopia harbor adequate levels of rhizobia capable of nodulating cowpea, which are passable to provide satisfactory nitrogen fixation and nodulation.","PeriodicalId":29858,"journal":{"name":"Sustainable Environment","volume":"7 1","pages":""},"PeriodicalIF":2.3,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78306594","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1