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Life cycle and masting of a recovering keystone indicator species under climate fluctuation

Ecosystem Health and Sustainability 2016年第6期2卷 16-27页

作者： Qinfeng guo Stanley J.Zarnoch Xiongwen Chen dale g.brockway USDA FS Eastern Forest Environmental Threat Assessment Center 3041 Cornwallis Road Research Triangle ParkNorth Carolina 27709 USA USDA Forest Service Southern Research StationClemson UniversityLehotsky HallClemsonSouth Carolina 29634 USA Department of Biological and Environmental Sciences Alabama A&M UniversityP.O.Box 1927NormalAlabama 35762 USA USDA Forest Service Southern Research Station521 Devall DriveAuburnAlabama 36849 USA

Ecosystem health and sustainability,to a large degree,depend on the performance of keystone or dominant *** role of climate on population dynamics of such species has been extensively examined,especially for health indicator *** the life-cycle processes and response lags for many species could complicate efforts to detect clear climate *** pine(Pinus palustris Mill.)is such a keystone tree species in the southeastern United States that has declined in both abundance and distribu-tion during the past *** research efforts on multiple fronts,the mechanisms behind the large spatial and temporal fluctuations in cone production that affects its regeneration are largely *** the basis of long-term(15-56 yr)monitoring data at 10 sites across the species’native range,we examine the spatial and temporal patterns in cone production and possible climatic effects on those patterns using the information-theoretic *** production exhibited great variation across sites and years,and long-term data revealed a weak,ca.3 yr cycle(4 in one case)across the native *** effects of climate were rather complex,most likely due to a mismatch between the prolonged cone-production life cycle process and climatic ***,sites close to each other generally showed similar physical conditions and temporal trends in cone *** sites within longleaf pine’s range,moderate climate conditions appear to promote cone *** most sites,there was an increasing trend in cone production,but how such a trend might be linked to climate change requires further investigation.

关键词： idiosyncrasy life history Moran effect Pinus palustris regeneration sustainability synchrony time lag wavelet analysis

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Decomposing the drivers of residential space cooling energy consumption in EU-28 countries using a panel data approach

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能源与人工环境(英文) 2020年第4期1卷 432-442页

作者： Andreas Andreou John Barrett Peter g.Taylor Paul E.brockway Zia Wadud Sustainability Research Institute School of Earth and EnvironmentUniversity of LeedsLeedsLS29JTUK Low Carbon Energy Research group School of Chemical and Process EngineeringUniversity of LeedsLeedsLS29JTUK Spatial Modelling and Dynamics Research group Institute for Transport StudiesUniversity of LeedsLeedsLS29JTUK

While space cooling currently represents less than 1%of final energy use in the residential sector of the Euro-pean Union(EU-28),it was the fastest growing end-use during the 2000-15 period with a mean annual growth rate of 6%per ***,little is known about factors which have driven regional air-conditioning(AC)energy consumption over time,since the literature is limited to cross-sectional studies that lack differentiation between climatic and non-climatic *** projections for the EU’s electricity sector may therefore neglect the potential implications of rapidly growing AC *** develop a novel decomposition framework,which breaks down residential space cooling energy consumption in EU-28 countries into the effect of different components from 2000 to *** is extended to panel data models identifying specific drivers of space cooling’s climate-sensitive ***,we explore scenarios of residential AC energy consumption up to 2050 and evaluate their impact on summer time peak *** diffusion was found to be the key driver of space cooling energy consumption,but this effect was partly counterbalanced by efficiency *** weather influences AC equipment ownership rate in EU-28 households,personal income has a larger marginal *** baseline scenarios,AC diffusion saturates by 2050,while modestly increasing sectoral final energy ***,our range of scenario values for space cooling energy consumption in 2050 exceed the majority of those originat-ing from recently published *** a future renewables-driven electricity system,energy security risks may emerge from a scenario of fast AC up-take in new and renovated buildings,especially for colder European countries where modelled peak cooling electricity demand is shown to outgrow the projected expansion of solar *** findings have important implications for the EU’s strategy to decarbonise energy supply.

关键词： Space cooling AC diffusion Decomposition analysis Panel data model Peak demand

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新闭路循环式面具呼吸测热法的研究

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中国农业大学学报 1985年第1期 71-79页

作者：冯仰廉 MOLLISON,g.S. SMITH,J.S. brockway,J.M. 北京农业大学畜牧系英洛维特Rowett研究所能量代谢系英洛维特Rowett研究所能量代谢系英洛维特Rowett研究所能量代谢系

呼吸测热是研究家畜能量代谢,确定家畜的能量需要和评定饲料能量价值的重要方法。常用有呼吸室和呼吸面具法。近几十年来,大家畜的呼吸室发展较快。呼吸室法准确可靠,能长时持续测定,但设备较复杂,成本很高,至今在国际上只少数研究单位... 详细信息

呼吸测热是研究家畜能量代谢,确定家畜的能量需要和评定饲料能量价值的重要方法。常用有呼吸室和呼吸面具法。近几十年来,大家畜的呼吸室发展较快。呼吸室法准确可靠,能长时持续测定,但设备较复杂,成本很高,至今在国际上只少数研究单位有大家畜呼吸室。常用的非呼吸室法有面具和头套法,由于装置成本低,能携带至现场测定,在国际上仍继续使用,但传统面具法(开路集气袋法)目前应用的不普遍。国内现刚

关键词：产热家畜对比试验活门农畜比较试验可靠性试验气袋闭路循环测热法

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