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| 1 | 半干旱区草原生态系统的碳交换特征显示文摘利用2007~2008年内蒙古锡林浩特羊草草原(1979年开始围封,简称UG79站)、甘肃黄土高原草原(SACOL站)以及吉林半干旱通榆退化草原(TY站)三个站的涡动相关法取得的观测资料,分析了半干旱区不同地点草原生态系统的碳交换特征及其主要环境影响因子.2007年UG79站和TY站降水均偏少(与气候平均年降水量相比);特别是TY站,2007年降水不足多年平均降水量一半;SACOL站2007年降水基本正常,2008年降水偏少.净碳吸收速率月平均日变化表明,TY站平均净碳吸收速率较高,其次为UG79站,SACOL站平均净碳吸收速率较低;但SACOL站净碳吸收过程持续时间较长.UG79站两年间净碳收过程相似,净碳吸收作用均在生长季(5~9月)6~8月份较明显,2008年8月最大净碳吸收速率接近0.08mgCm-2s-1;SACOL站2007年净碳吸收速率高于2008年,2007年9月最大净碳吸收速率接近0.07mgCm-2s-1.TY站2007年净碳吸收作用持续时间较短,只在生长季7~8月份表现出明显的净碳吸收作用;2008年净碳吸收速率较高,最大净碳吸收速率接近0.12mgCm-2s-1.三个站点生态系统呼吸受土壤温度和土壤水分共同影响.SACOL站和UG79站2007~2008年生长季期间均表现为碳库作用.UG79站两年间生长季累积净碳交换总量分别为-68,-50gCm-2;SACOL站两年间累积净碳交换总量分别为-109,-55gCm-2.TY站2007,2008年累积净碳交换总量分别是0.32,-73gCm-2,分别表现为碳源和碳汇功能.生长季有效降水开始的时间、总降水量及其时间分布决定了半干旱区草原生态系统净碳吸收功能和净碳吸收作用持续的时间. | 杜群 刘辉志 冯健武 王雷 黄建平 张武 Christian BERNHOFER | 2012 | 中国科学:地球科学2012，42，5： | 21 |
| 2 | 内蒙古羊草和大针茅草原下垫面水汽、CO_2通量输送特征显示文摘利用涡动相关技术对2007年8月18日~9月12日在内蒙古羊草和大针茅草原样地上进行微气象观测,比较了两种草原生态系统下垫面水汽、CO2通量交换的差异,结果表明:(1)羊草样地的气温、地表温度和水汽压较小;羊草和大针茅样地的地表反射率平均值分别为0.17和0.16;(2)受土壤水分胁迫控制,羊草和大针茅样地的有效能量主要分配为感热通量,平均波文比分别为3.70和2.69,潜热通量在大针茅样地更大,有随着土壤湿度持续减小而减小的趋势;(3)羊草和大针茅样地在观测期间表现为CO2的源,日均释放率分别为0.97 g.CO2.m-2.d-1和0.43 g.CO2.m-2.d-1。受土壤水分胁迫和草地生理作用的控制,日间羊草和大针茅样地都出现了CO2通量的衰减。 | 王雷 刘辉志 David Schaffrath Christian Bernhofer | 2010 | 高原气象2010，29，3： | 12 |
| 3 | 放牧强度对内蒙古半干旱草原地气间能量和物质交换的影响显示文摘利用涡度相关技术,于2006年7月27日至8月10日在内蒙古半干旱草原三种放牧强度的下垫面进行微气象观测。本文分析了放牧强度对内蒙古半干旱草原地气间能量和物质交换的影响,发现:(1)放牧降低植被覆盖率,使地表反射率增大。(2)放牧使潜热通量减小。而放牧强度最大的锡林河河道潜热通量最大,表明土壤水分状况是半干旱草原地表能量收支的决定性因素。(3)羊草和冬季放牧观测点日平均CO2通量分别为-1.92g·m-2·d-1和0.73g·m-2·d-1,表明放牧可以使草地由CO2的汇转变为源。锡林河河道为CO2的汇,日平均CO2通量-3.35g·m-2·d-1,与羊草比较,锡林河河道吸收CO2更多,表明土壤湿度是影响半干旱草原CO2通量交换的重要因素。(4)放牧通过减小叶面积指数,减弱植被的光合作用能力。 | 王雷 刘辉志 Bettina KETZER David SCHAFFRATH Christian BERNHOFER | 2009 | 大气科学2009，33，6： | 10 |
| 4 | Carbon dioxide exchange processes over the grassland ecosystems in semiarid areas of China显示文摘Based on the carbon fluxes measured over the grassland ecosystems in Inner Mongolia(UG79 site),Loess Plateau(SACOL site),and Tongyu,Jilin Province(TY site) in the semiarid areas from 2007 to 2008 with the eddy covariance method,we have investigated the carbon exchange processes over semiarid grassland ecosystem and its main affecting environmental variables.The precipitations at UG79 and TY sites in 2007 were below the historical average,especially for TY site,which was 50% below the historical average annual precipitation.The precipitation in SACOL site was close to average in 2007 but below average in 2008.The variation of monthly diurnal average NEE showed that the diurnal mean NEE decreased in the order of TY site,UG79 site,and SACOL site.However,a longer net carbon uptake period was observed at SACOL site.The diurnal course of NEE at UG79 site was similar between 2007 and 2008.The diurnal average NEE remained large during July and August in growing season(May to September) at UG79 site,with maximum values approaching 0.08 mg C m-2 s-1 in August of 2008.The diurnal average NEE of 2007 was larger than 2008 at SACOL site,with maximum values of 0.07 mg C m-2 s-1 in September of 2007.A shorter carbon uptake period was recorded in 2007 at TY site,lasting from July to August.A larger diurnal average NEE occurred in 2008 at TY site,with maximum values of 0.12 mg C m-2 s-1.The ecosystem respirations of three sites were controlled by both soil temperature and soil volumetric water content(at a depth of 5 cm below the land surface).Both UG79 site and SACOL site acted as a carbon sink during the growing periods of 2007 and 2008.Annual NEE in the growing seasons of 2007 and 2008 ranged from-68 to-50 g C m-2 at UG79 site and from-109 to-55 g C m-2 at SACOL site.Alternation between carbon source and carbon sink was found at TY site,with respective values of annual NEE in the growing seasons of 0.32 g C m-2 and-73 g C m-2 in 2007 and 2008.The magnitude and duration of carbon uptake depended mainly on the amount and timing of precipitation and the timing of the first effective rainfall during the growing season in semiarid grassland ecosystems. | DU Qun LIU HuiZhi WANG Lei HUANG JianPing ZHANG Wu Christian BERNHOFER | 2012 | Science China Earth Sciences2012，55，4： | 6 |
| 5 | Energy balance closure at FLUXNET sites显示文摘 | Kell Wilson Allen Goldstein Eva Falge Marc Aubinet Dennis Baldocchi Paul Berbigier Christian Bernhofer Reinhart Ceulemans Han Dolman Chris Field Achim Grelle Andreas Ibrom B.E Law Andy Kowalski Tilden Meyers John Moncrieff Russ Monson Walter Oechel John T | 2002 | Agricultural and Forest Meteorology2002，，1： | 4 |
| 6 | 土壤水分条件对内蒙古典型草原水汽和二氧化碳通量的影响研究显示文摘本文基于2007年和2008年生长季内蒙古羊草和大针茅草原湍流观测资料,分析了两种典型草原下垫面生长季的不同土壤水分条件下水汽和二氧化碳通量交换特征及其控制因子。主要结果如下:(1)在植被生长峰值期,日尺度上,干旱条件下土壤湿度是潜热通量的主要控制因子,而土壤水分条件较好时潜热通量主要受净辐射控制。(2)与大针茅草原相比,羊草草原叶面积指数较大,水分条件较好时,其潜热通量平均值更大,CO_2吸收能力更强,吸收CO_2更多;但在土壤水分胁迫出现时,羊草草原叶面的气孔闭合度急剧增加,大针茅草原的潜热通量、和CO_2吸收反而更大,表现出更为耐旱的植被特性。(3)地表导度可以用来解释土壤水分条件对羊草和大针茅草原碳水通量的影响。 | 王雷 刘辉志 Christian Bernhofer | 2017 | 大气科学2017，41，1： | 4 |
| 7 | Gap filling strategies for long term energy flux data sets显示文摘 | Eva Falge Dennis Baldocchi Richard Olson Peter Anthoni Marc Aubinet Christian Bernhofer George Burba Reinhart Ceulemans Robert Clement Han Dolman André Granier Patrick Gross Thomas Grünwald David Hollinger Niels-Otto Jensen Gabriel Katul Petri Keronen And | 2001 | Agricultural and Forest Meteorology2001，，1： | 2 |
| 8 | Estimates of the Annual Net Carbon and Water Exchange of Forests: The EUROFLUX Methodology显示文摘 | M. Aubinet A. Grelle A. Ibrom ü. Rannik J. Moncrieff T. Foken A.S. Kowalski P.H. Martin P. Berbigier Ch. Bernhofer R. Clement J. Elbers A. Granier T. Grünwald K. Morgenstern K. Pilegaard C. Rebmann W. Snijders R. Valentini T. Vesala | 2000 | Advances in Ecological Research2000，，： | 1 |
| 9 | Investigating the relationship between NDVI and LAI in semi-arid grassland in Inner Mongolia using in-situ measurements显示文摘 | L. Fan Y. Gao H. Brück Ch. Bernhofer | 2009 | Theoretical and Applied Climatology (-)2009，，1： | 1 |
| 10 | Probiotics in Clostridium difficile infection: reviewing the need for a multistrain probiotic显示文摘 | M. Hell C. Bernhofer P. Stalzer J.M. Kern E. Claassen | 2013 | Beneficial Microbes2013，，1： | 1 |
| 11 | Another simple method of spectral cor- rection to obtain robust eddy-covariance results 显示文摘 | Spank U Bernhofer (2 | 2008 | Boundary Layer Meteorology2008，128，3： | 1 |
| 12 | Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling显示文摘 | C. Rebmann M. G?ckede T. Foken M. Aubinet M. Aurela P. Berbigier C. Bernhofer N. Buchmann A. Carrara A. Cescatti R. Ceulemans R. Clement J. A. Elbers A. Granier T. Grünwald D. Guyon K. Havránková B. Heinesch A. Knohl T. Laurila B. Longdoz B. Marcolla T. M | 2005 | Theoretical and Applied Climatology (-)2005，，2： | 1 |
| 13 | Quality analysis applied on eddy covariance measurements at complex forest sites using footprint modelling显示文摘 | C. Rebmann M. G?ckede T. Foken M. Aubinet M. Aurela P. Berbigier C. Bernhofer N. Buchmann A. Carrara A. Cescatti R. Ceulemans R. Clement J. A. Elbers A. Granier T. Grünwald D. Guyon K. Havránková B. Heinesch A. Knohl T. Laurila B. Longdoz B. Marcolla T. M | 2005 | Theoretical and Applied Climatology2005，，2： | 1 |
| 14 | Spatial simulation of evapotranspiration of semi-arid Inner Mongolian grassland based on MODIS and eddy covariance data 显示文摘 | VEI'FER S H SCHAFFRATH D BERNHOFER C | 2012 | Environmental Earth Sciences2012，65，5： | 1 |
| 15 | The influence of the response of skin equivalents systems to topically applied consumer products by epithelial mesenchymal interaction 显示文摘 | Bernhofer LP Seiberg M Martin KM | 1999 | Toxicol Vitro1999，13，： | 1 |
| 16 | Hospital lighting and its association with sleep,mood and pain in medical inpatients显示文摘 | BERNHOFER E I HIGGINS P A DALY B J | 2014 | Journal of advanced nursing2014，70，5： | 1 |
| 17 | Characteristics of Momentum and Heat Transfer over Semiarid Grasslands with Different Grazing Intensities in Inner Mongolia,China显示文摘The drag coefficient (C d) and heat transfer coefficient (C h) with the bulk transfer scheme are usually used to calculate the momentum and heat fluxes in meteorological models.The aerodynamic roughness length (z 0m) and thermal roughness length (z 0h) are two crucial parameters for bulk transfer equations.To improve the meteorological models,the seasonal and interannual variations of z 0m,z 0h,coefficient kB 1,C d,and C h were investigated based on eddy covariance data over different grazed semiarid grasslands of Inner Mongolia during the growing seasons (May to September) from 2005 to 2008.For an ungrazed Leymus chinensis grassland (ungrazed since 1979),z 0m and z 0h had significant seasonal and interannual variations.z 0m was affected by the amount and distribution of rainfall.kB 1 exhibited a relatively negative variation compared with z 0h,which indicates that the seasonal variation of z 0h cannot be described by kB 1.To parameterize z 0m and z 0h,the linear regressions between ln(z 0m),ln(z 0h),and the leaf area index (LAI) were performed with R 2 =0.71 and 0.83.The monthly average kB 1 was found to decrease linearly with LAI.The four-year averaged values of C d and C h were 4.5×10 3 and 3.9×10 3,respectively.The monthly average C d only varied by 8% while the variation of C h was 18%,which reflects the different impacts of dead vegetation on momentum and heat transfer at this natural grassland.Moreover,with the removal of vegetation cover,grazing intensities reduced z 0m,z 0h,C d,and C h. | WANG Lei LIU Hui-Zhi Bettina KETZER FENG Jian-Wu Christian BERNHOFER | 2011 | Atmospheric and Oceanic Science Letters2011，4，5： | 1 |
| 18 | The influence of advection on the short term CO2 budget in and above a forest canopy显示文摘 | Feigenwinter C Bernhofer C Vogt R | 2004 | Boundary-Layer Meteorology2004，113，： | 1 |
| 19 | Growth and gase-ous emissions of pure and mixed small intestinal bacterial cultures:effects of bile and vancomycin显示文摘 | HAKALEHTO E HELL M BERNHOFER C | 2010 | Path physiol2010，17，： | 1 |
| 20 | IL-1 alpha and IL-1 ra secretion from epidermal equivalents and the prediction of the irritation potential of mild soap and surfactant-based consumer products 显示文摘 | Bernhofer LP Barkovic S Appa Y | 1999 | Toxicol In Vitro1999，13，2： | 1 |
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