Ecosystem Ecology eJournal最新文献

Using Meta-Analysis to Assess Benefits of Green Infrastructure Investments: Application to Small Urban Projects in Hinesville, GA 利用元分析评估绿色基础设施投资的效益:在佐治亚州欣斯维尔小型城市项目中的应用

Ecosystem Ecology eJournal Pub Date : 2020-11-03 DOI: 10.2139/ssrn.3724449

C. Landry, J. Pippin, R. Zarei

引用次数: 0

Opportunities and Challenges for Environmental Sustainability: A Socioeconomic and Political Analysis 环境可持续性的机遇与挑战:社会经济与政治分析

Ecosystem Ecology eJournal Pub Date : 2019-05-26 DOI: 10.2139/ssrn.3394456

F. Dufour

{"title":"Opportunities and Challenges for Environmental Sustainability: A Socioeconomic and Political Analysis","authors":"F. Dufour","doi":"10.2139/ssrn.3394456","DOIUrl":"https://doi.org/10.2139/ssrn.3394456","url":null,"abstract":"The instrumental value of biodiversity has been the cornerstone of major debates over its loss, which, without doubt, will negatively impact our environment by either reducing or doing away with ecosystems services that most of us relish, so much so that our well-being depends on it. Nevertheless, all living things on this planet have been subject to an unprecedented assault at the hand of humanity. The assault is both direct and indirect. Direct because we drive vulnerable species to the brink of extinction by overhunting and overfishing them. Indirect because some of our activities causes the climate to change, thus affecting both land and marine flora and fauna. And this has been going on for centuries – at least since the start of the Industrial Revolution. Added to our insatiable desire to continuously alter the environment, is population growth, which has been a catalyst in the degradation of the environment for more people means more food, thus, more land for agricultural use and more land needed for accommodation and to build cities. The past century was marked by population size increase and technological capabilities of our species, two factors that put the extinction of other species on the fast track. That has prompted scientists to talk about the sixth great extinction wave, which is, of course, different from the first five because they were caused by natural events and not by intelligent species’ activities. This report has for goal to consider the chances that our environment will be sustainable or viable in the future and the potential obstacles it might encounter at three different levels: social, economic, and political.","PeriodicalId":375465,"journal":{"name":"Ecosystem Ecology eJournal","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-05-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128536230","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: 2

Permeability Damage Due to Fines Migration During CO2 Sequestration CO2固存过程中微粒迁移对渗透率的破坏

Ecosystem Ecology eJournal Pub Date : 2018-10-21 DOI: 10.2139/ssrn.3365877

F. Othman, M. Arif, F. Hussain

{"title":"Permeability Damage Due to Fines Migration During CO2 Sequestration","authors":"F. Othman, M. Arif, F. Hussain","doi":"10.2139/ssrn.3365877","DOIUrl":"https://doi.org/10.2139/ssrn.3365877","url":null,"abstract":"Fines migration has not been widely considered during CO2 injection into water-saturated rocks. Mineral dissolution effects are only considered in long-term experiments (weeks to months scale). This study conducts a series of short (few hours) dynamic experiments to study the effect of dissolution and fines migration on CO2 injectivity in cores. Three coreflooding experiments were performed using Berea sandstone at difference salinity brine (0, 10, 30 and 60 g/L NaCl). First, the core plugs were subjected to brine injection. Then, CO2-saturated brine was injected to displace unsaturated brine from the core. Afterward, brine saturated supercritical CO2 (scCO2) was injected into the core. The Pressure drop across the core was monitored and produced water samples were collected continuously during the experiments. To characterize the core sample, X-Ray Powder Diffraction (XRD), X-Ray Fluorescence (XRF), and Scanning Electron Microscopy (SEM) analyses were performed. After the experiment, SEM-EDS analysis was run and registered with the pre-injection images to visualize fines migration. Fines concentration was measured, and ionic chromatography analysis was performed to characterize produced water samples. Numerical simulations were performed to model the experiment geochemical reactions. The permeability of the core sample is significantly reduced after the experiment due to pore blockage. SEM-EDS analysis of the blocked pores and produced fines show blockage is mostly caused by clay, quartz and cement. Numerical simulations showed that the reaction rate; hence, cement dissolution is faster at higher salinity.","PeriodicalId":375465,"journal":{"name":"Ecosystem Ecology eJournal","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-10-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117158968","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

Urban Watershed Services for Improved Ecosystem Management and Risk Reduction, Assessment Methods and Policy Instruments: State of the Art 城市流域服务改善生态系统管理和降低风险、评估方法和政策工具:最新进展

Ecosystem Ecology eJournal Pub Date : 2014-01-10 DOI: 10.2139/ssrn.2377329

Y. Depietri, L. Guadagno, M. Breil

{"title":"Urban Watershed Services for Improved Ecosystem Management and Risk Reduction, Assessment Methods and Policy Instruments: State of the Art","authors":"Y. Depietri, L. Guadagno, M. Breil","doi":"10.2139/ssrn.2377329","DOIUrl":"https://doi.org/10.2139/ssrn.2377329","url":null,"abstract":"Under scenarios of increasing unplanned urban expansion, environmental degradation and hazard exposure, the vulnerability of urban populations, especially of their poorer segments, needs to be tackled through integrated economic, social and environmental solutions. Basing our analysis on the concept of ecosystem services, we suggest that urban areas would benefit from a shift in perspective towards a more regional approach, which recognizes them as one of many interconnected elements that interact at the watershed level. By integrating an ecosystem approach into the management of water-related services, urban management policies can take a first step towards fostering an improvement of the health of upstream and downstream areas of the watershed, activating environmentally sound practices which aim at guaranteeing the sustainable and cost effective supply of services. These strategies can for instance be supported by using payment schemes for ecosystem services or similar strategies, allowing for the redistribution of resources among communities in the watershed. From our analysis it results that, through the recognition of the primary role played by watershed ecosystems, cities can benefit from an enlarged set of policies, which can help strengthen the supply of essential environmental services, while reducing the vulnerability of its population and contributing to the maintenance of healthy ecosystems.","PeriodicalId":375465,"journal":{"name":"Ecosystem Ecology eJournal","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-01-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114383378","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

Methodology on Defining Environmental Sensitivity Index for Settlement Area in the River-Basin, Coastal and Small Island 江河流域、沿海和小岛聚落区环境敏感性指数的确定方法

Ecosystem Ecology eJournal Pub Date : 2013-05-30 DOI: 10.2139/SSRN.2320733

Y. Wahyudin

引用次数: 0

Linking Regional Land Use and Payments for Forest Hydrological Services: A Case Study of Hoa Binh Reservoir in Vietnam 链接区域土地利用和森林水文服务支付:以越南和平水库为例

Ecosystem Ecology eJournal Pub Date : 2013-05-10 DOI: 10.2139/ssrn.2777985

Trung-Thanh Nguyen, V. D. Pham, J. Tenhunen

引用次数: 54

Interventions in Honey Value Chains: Making Difference for Indigenous Communities 蜂蜜价值链中的干预措施:为土著社区带来改变

Ecosystem Ecology eJournal Pub Date : 2012-10-10 DOI: 10.2139/ssrn.2260600

S. Pellissery, Snehlata Nath

引用次数: 1