A comparison analysis of the decoupling carbon emissions from economic growth in three industries of Heilongjiang province in China

Environmental Science and Pollution Research - Growing environmental pressure urges China to develop in a sustainable and low carbon way, and thus China strives to achieve a carbon peak by 2030 and...     

跨区域流域生态补偿标准核算——基于成本收益双视角

合理的补偿标准是流域生态补偿的核心,也是激励生态系统服务提供者积极性、体现生态系统服务改善价值、实现区域协同发展的关键内容.基于成本收益双视角,以渭河流域为例,运用全成本法和选择实验法测算了流域生态系统服务保护的成本收益,进一步借助鲁宾斯坦议价模型核算跨区域生态补偿标准.结果表明:(1)为改善流域生态环境,上游甘肃省的直接治理成本约为35021.27万元/a,间接成本约为107112.26万元/a,全成本约为142133.53万元/a;(2)流域生态系统服务改善能够为中下游陕西省带来的收益为252912.96万元;(3)在流域生态系统服务保护成本收益明确的前提下,若上游地区在协商中具有完全耐心或中下游地区完全没有耐心,则上游获得全部净收益,补偿标准为252912.96万元/a;若上游地区完全没有耐心,且当中下游耐心程度(贴现因子)为0.5时,则双方将均分净收益,即补偿标准为197523.25万元/a.总的来看,研究对流域生态系统服务保护的成本收益分析及跨区域生态补偿标准核算提供了可行思路,实际应用中可根据具体情况合理设定议价双方贴现因子进行灵活处理.     

Protective effects of dietary betaine on intestinal barrier function and cecal microbial community in indigenous broiler chickens exposed to high temperature environment

Environmental Science and Pollution Research - High temperature environment causes reduction in productivity in broilers by disrupting the intestinal barrier function. This study aimed to...     

Could biochar amendment be a tool to improve soil availability and plant uptake of phosphorus? A meta-analysis of published experiments

Environmental Science and Pollution Research - As one of the most important nutrients for plant growth, phosphorus was often poorly available in soil. While biochar addition induced improvement of...     

Association between air pollution and COVID-19 infection: evidence from data at national and municipal levels

Environmental Science and Pollution Research - The impact of high concentrations of air pollution on COVID-19 has been a major air quality and life safety issue in recent studies. This study aimed...     

Improved product selectivity of electrochemical reduction of carbon dioxide by tuning local carbon dioxide concentration with multiphysics models

Environmental Chemistry Letters - Electrochemical reduction of carbon dioxide (CO2) is promising to alleviate carbon emissions and produce fuels and materials in a circular way, yet effective...     

The pollution halo effect of technology spillover and pollution haven effect of economic growth in agricultural foreign trade: two sides of the same coin?

Environmental Science and Pollution Research - The existing literature on the environmental Kuznets curve (EKC) fails to investigate the spatial attribute of the “pollution halo” effect...     

创新价值链视角下企业创新效率差异及影响因素分析——基于江苏省国家高新区企业的验证

中国经济新常态背景下,高新区企业创新增效提质是增强高新区创新能力的内生动力.从创新价值链视角出发,将企业创新过程分为技术开发阶段和经济转化阶段,运用两阶段DEA模型分别对2016年江苏省12个国家高新区、11个技术领域以及各高新区内不同技术类型企业的整体和分阶段创新效率进行测度,并构建Tobit回归模型探究每个阶段企业创新效率的影响因素.研究表明:(1)江苏省国家高新区整体创新效率有较大提升空间,其中技术开发效率表现优于经济转化效率.(2)高创新效率的技术领域集中在电子与信息、新材料等,生物医药、环境保护和光机电一体化等技术领域整体创新效率处于较低水平.(3)以各阶段创新效率均值为分界,划分创新资源利用的四种模式,大部分高新区企业处于高开发-低转化和低开发-高转化型模式,存在技术创新与经济转化联系不够紧密的现象.(4)资本投入水平、劳动力的“质”和“量”、政府支持力度对企业创新效率的影响存在明显的阶段差异性.最后,根据研究结果,从强化知识交流网络、集聚多元化人才、调整资源投入产出评估方式及采取扬优补短式效率提升路径四个方面给出提升高新区企业创新效率的政策建议.     

Combination with catalyzed Fe(0)-carbon microelectrolysis and activated carbon adsorption for advanced reclaimed water treatment: simultaneous nitrate and biorefractory organics removal

A process combining catalyzed Fe(0)-carbon microelectrolysis (IC-ME) with activated carbon (AC) adsorption was developed for advanced reclaimed water treatment. Simultaneous nitrate reduction and chemical oxygen demand (COD) removal were achieved, and the effects of composite catalyst (CC) addition, AC addition, and initial pH were investigated. The reaction kinetics and reaction mechanisms were calculated and analyzed. The results showed that CC addition could enhance the reduction rate of nitrate and effectively inhibit the production of ammonia. Moreover, AC addition increased the adsorption capacity of biorefractory organic compounds (BROs) and enhanced the degradation of BRO. The reduction of NO₃^?–N at different pH values was consistently greater than 96.9%, and NH₄⁺–N was suppressed by high pH. The presence of CC ensured the reaction rate of IC-ME at high pH. The reaction kinetics orders and constants were calculated. Catalyzed iron scrap (IS)-AC showed much better nitrate reduction and BRO degradation performances than IS-AC and AC. The IC-ME showed great potential for application to nitrate and BRO reduction in reclaimed water.

     

Control of NOx emissions by air staging in small- and medium-scale biomass pellet boilers

Environmental Science and Pollution Research - The effect of air staging strategies on NOx control was investigated on a 210-kW small-scale biomass boiler (SBB) and a 1.4-MW medium-scale biomass...