Journal of Environmental Professionals Sri Lanka最新文献

Santalum album Distribution in Sri Lanka and the Variation of Oil Content and Constituents 斯里兰卡桑属植物的分布及其含油量和成分的变化

Journal of Environmental Professionals Sri Lanka Pub Date : 2022-12-30 DOI: 10.4038/jepsl.v11i1.7883

S. Subasinghe, D. Hettiarachchi

引用次数: 0

Do Carbon Management Practices create an immediate impact? A Case Study on Cut and Sew Apparel Manufacturing Companies in Sri Lanka 碳管理实践能产生立竿见影的效果吗?斯里兰卡裁剪和缝制服装制造公司的案例研究

Journal of Environmental Professionals Sri Lanka Pub Date : 2022-12-30 DOI: 10.4038/jepsl.v11i1.7882

A. W. Thiranagama, W. Wahala

引用次数: 0

Assessment of the Blue Carbon Stocks Including Mangroves, Seagrasses and Salt Marshes in Puttalam, North West Sri Lanka 斯里兰卡西北部普塔拉姆红树林、海草和盐沼蓝碳储量评估

Journal of Environmental Professionals Sri Lanka Pub Date : 2022-12-30 DOI: 10.4038/jepsl.v11i1.7884

G. Sathiyamohan, D. Ranasinghe, W. Wahala

引用次数: 0

A Comparative Assessment of Environmental Sustainability in Hospitality Industry with a Special Focus on Resource Efficiency and Cleaner Production Indicators 以资源效率和清洁生产指标为重点的酒店业环境可持续性比较评估

Journal of Environmental Professionals Sri Lanka Pub Date : 2022-12-30 DOI: 10.4038/jepsl.v11i1.7881

Merrica Fernando, S. Peiris, D. Halwatura, D. Wickramasinghe

引用次数: 0

Evaluation of Energy Properties of Lesser Known Native Species; Nataw (Xylopia parviflora) 鲜为人知的本土物种能量特性的评价Nataw (Xylopia parviflora)

Journal of Environmental Professionals Sri Lanka Pub Date : 2019-07-01 DOI: 10.4038/JEPSL.V8I1.7876

W. Bandara, W. Leelarathna

{"title":"Evaluation of Energy Properties of Lesser Known Native Species; Nataw (Xylopia parviflora)","authors":"W. Bandara, W. Leelarathna","doi":"10.4038/JEPSL.V8I1.7876","DOIUrl":"https://doi.org/10.4038/JEPSL.V8I1.7876","url":null,"abstract":"The most common forms of biomass available in Sri Lanka are fuel wood. Among fuel woods Hevea brasiliensis (rubber) play major role as firewood to fulfill energy requirements. Especially industries demanded by rubber are not enough to meet the demand of fire wood. In this context, traditional users of fuelwood face difficulties in maintaining a stable supply of fuelwood. Therefore, there is an essential need in identifying possible, potential and high efficient biomass energy source to fulfill energy requirement in the country according to country’s energy policy targets. This study was designed to evaluate energy and mechanical properties of Nataw (Xylopia parviflora) to see its applicability as fuel wood in biomass boilers. To study the fuel wood characteristics of Nataw (Xylopia parviflora), individuals were categorized in to three diameter classes dbh class (5cm -15cm, 15cm - 25cm ,25cm - 35cm). In each individual four samples were taken from a wood disk extracted at breast height (1.3m). Moisture content, density, specific gravity, ash content, volatile matter, fixed carbon and biomass/ash ratio were measured from five individuals from each diameter class. Certain characteristics including moisture content, density, specific gravity, and ash content had no significant difference among three dbh classes. Volatile matter content was significantly higher and fixed carbon content was significantly lower than the other two types of dbh classes in 25cm – 35cm diameter class, the largest diameter class. When compare energy characteristics of Xylopia parviflora with Hevea brasiliensis, moisture content (31.22%) ash content (1.24%) were lower than the rubber. However Calorific values (18.92 kJ/g) and FVI (3055) higher than the rubber concluding Xylopia parviflora could perform better than rubber as a fuel wood in biomass boilers.","PeriodicalId":412724,"journal":{"name":"Journal of Environmental Professionals Sri Lanka","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124935771","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

Reviewing Effluent and Estuarine Water Quality in View of Introducing Effluent Standards for Coastal Aquaculture in Sri Lanka 从引入斯里兰卡沿海水产养殖出水标准的角度回顾出水和河口水质

Journal of Environmental Professionals Sri Lanka Pub Date : 2019-07-01 DOI: 10.4038/JEPSL.V8I1.7873

A. Corea

引用次数: 3

Evaluation of Farmer’s Woodlots: A Common Agroforestry System Used to Establish Forest Plantations 农民林地评价:建立人工林的一种常见农林业系统

Journal of Environmental Professionals Sri Lanka Pub Date : 2019-07-01 DOI: 10.4038/JEPSL.V8I1.7874

S. Subasinghe, K. Jayarathne

{"title":"Evaluation of Farmer’s Woodlots: A Common Agroforestry System Used to Establish Forest Plantations","authors":"S. Subasinghe, K. Jayarathne","doi":"10.4038/JEPSL.V8I1.7874","DOIUrl":"https://doi.org/10.4038/JEPSL.V8I1.7874","url":null,"abstract":"Farmer’s woodlot is a common agroforestry system used to establish forest plantations while increasing farmer’s income and proper utilization of marginal lands. This study was conducted to evaluate the farmer’s woodlots established in dry and intermediate zones of Sri Lanka. 17 teak plantations were selected from three districts. Three farmer’s woodlots from each plantation were randomly selected for the data collection and 170 farmers were interviewed using a questionnaire survey. dbh and total height were measured for the trees and soil samples were collected to determine organic carbon, nitrates, phosphorus, potassium, magnesium and calcium. Growth of teak in farmer’s woodlots was less than the average growth rates of the yield tables. Soil nutrients were present at very low levels and calcium was detected only in four plantations. Nitrate, potassium and magnesium were significantly different between the selected plantations and only nitrate was significantly correlated with teak growth. All farmers requested to extend the present 25-year land lease agreement to earn more income from teak. Poor site quality, damage caused by wild elephants, fire, insects and pests were common so that both timber growth and the yield of seasonal crops was low. Lack of technical support was also highlighted.","PeriodicalId":412724,"journal":{"name":"Journal of Environmental Professionals Sri Lanka","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129063484","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

Assessment of Soil Erosion in Uma Oya Catchment, Sri Lanka 斯里兰卡乌玛奥雅流域土壤侵蚀评估

Journal of Environmental Professionals Sri Lanka Pub Date : 2019-03-31 DOI: 10.4038/JEPSL.V8I1.7875

B. Dias, E. Udayakumara, J. Jayawardana, S. Malavipathirana, D. Dissanayake

{"title":"Assessment of Soil Erosion in Uma Oya Catchment, Sri Lanka","authors":"B. Dias, E. Udayakumara, J. Jayawardana, S. Malavipathirana, D. Dissanayake","doi":"10.4038/JEPSL.V8I1.7875","DOIUrl":"https://doi.org/10.4038/JEPSL.V8I1.7875","url":null,"abstract":"Soil erosion is one of the major threats which affects farm productivity and water quality in river catchments. Quantification of human-induced soil loss is an imperative measure in catchment management. Among the catchments in Sri Lanka, the highest sediment yield has been reported from the Upper Uma Oya catchment (UOC) which is a sub-catchment of the Upper Mahaweli catchment. The Mahaweli watershed is the most important watershed in Sri Lanka since the size and the economic importance of it. Hence, this study was conducted considering the ten selected sub-watersheds of Uma Oya Watershed (UOW) in Sri Lanka to quantify soil erosion. Soil erosion of UOW was calculated using Integrated Valuation of Ecosystem Services and Tradeoffs (InVEST) Sediment Delivery Ratio (SDR) model. It was found that the current soil erosion rates in the watershed is varied between 14.0–648.6 t/ha/yr. Results of the study disclose that the soil erosion rates of UOW are 3 to 130 times faster than the soil loss tolerance in Sri Lanka. Findings of the study suggest that the implementation of sustainable watershed management options are crucial in order to reduce soil erosion and to enhance the quality of the watershed.","PeriodicalId":412724,"journal":{"name":"Journal of Environmental Professionals Sri Lanka","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123867286","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: 5