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| 1 | Environmental changes reflected by n-alkanes of lake core in Nam Co on the Tibetan Plateau since 8.4 kaB.P.显示文摘The n-alkanes are extracted from NMLC-1 core that was drilled in the Nam Co, central Tibet. They are measured by using Gas Chromatography and Mass Spectrometry (GC/MS) for componential and quantitative analyses. According to the constructed depth-age model, the component and concentration of n-alkanes, together with total organic carbon (TOC), total nitrogen (TN) and carbonate are used to elu- cidate palaeoenvironmental changes of Nam Co during the past 8.4 ka. The results indicate that Holo- cene environment performs three stages in the lake area. In the stage of 8.4―6.7 kaB.P., it was warmer while precipitation slightly increased. This stage was ended by an obvious cold/dry event. During 6.7― 5.8 kaB.P., temperature increased rapidly and reached its maximum values at about 6.0 kaB.P. The environments were warm/wet optimum for the blooming of terrestrial plants and submerged aquatic plants. After that, temperature decreased continuously and showed the lowest values at about 3.0 kaB.P. From 2.9 kaB.P. to the present, temperature rose again but alternated with cold and warm. The lake area tended to be dry after 1.4 kaB.P. During 600―400 aB.P., the environmental feature was the reflection of 'Little Ice Age'. | LIN Xiao ZHU LiPing WANG Yong WANG JunBo XIE ManPing JU JianTing Roland MAUSBACHER Antje SCHWALB | 2008 | Chinese Science Bulletin2008，53，19： | 14 |
| 2 | 西藏纳木错湖芯正构烷烃及其反映的8.4ka以来的环境变化显示文摘采用索氏抽提法提取纳木错NMLC-1孔湖芯沉积物中的正构烷烃,利用GC/MS进行了测试。在已经建立的深度一年代曲线基础上,通过分析正构烷烃的组成与含量,结合TOC,TN和CaCO3等环境代用指标,重建了纳木错湖区约8.4ka以来的环境变化历史。结果表明:约8.4-6.7kaBP期间,环境较温暖,降水呈增加趋势,末期变冷干。约6.7-2.9ka BP期间可分为两个亚期,早期温暖湿润,至6.0ka BP左右达到环境最适宜期;晚期温度波动降低,陆生植被和沉水植物退化,以3.0ka BP左右的冷事件结束。约2.9ka BP-现在,冷暖交替,1.4ka BP左右开始趋于干燥,600-400a BP间的降温体现了小冰期特征。 | 林晓 朱立平 汪勇 王君波 谢曼平 鞠建廷 Roland Mausbacher Antje Schwalb | 2008 | 科学通报2008，53，19： | 8 |
| 3 | 西藏纳木错全新世沉积物的环境磁学参数变化机理显示文摘青藏高原的高分辨环境记录对于理解全球气候与环境变化至关重要.湖泊沉积物的磁学参数能够记录沉积环境和古气候信息.纳木错是西南季风过渡区大湖的典型代表,前人在该湖开展了大量地球化学、微体化石、沉积学和生物化学分析,极大地推动了该区古气候环境的重建工作.但迄今为止,还缺乏对纳木错湖泊沉积物系统的环境磁学研究.因此,本文选取纳木错湖芯NC08/01孔全新世以来(11.3calkaBP)的湖泊沉积物进行详细的岩石磁学与环境磁学研究,结合地球化学指标,在明确的气候背景下探讨该湖沉积物磁性参数的变化机制.结果表明,纳木错全新世沉积物的磁性参数受到陆源磁性矿物输入、还原溶解作用和磁细菌活动的共同影响.根据各磁学参数系统的变化趋势,可将该研究段样品分为3段:第Ⅰ段(236~199cm,11.3~7.8calkaBP)主要载磁矿物为粗颗粒磁铁矿,粒度均一,含量较高,并与Ti含量呈正相关关系,指示该段磁性矿物受后期溶解作用影响较小,其含量主要反映物源输入信息;第Ⅱ段(198~102cm,7.8~2.1calkaBP),磁性矿物颗粒变细,含量明显降低.在该段,湖面下降,水动力减小,进而输入的磁性矿物粒径也减小,容易受到后期溶解作用的影响;第Ⅲ段(101~0cm,2.1~0calkaBP),磁性矿物以生物成因单畴磁铁矿和陆源碎屑成因磁铁矿为主,磁性颗粒含量的变化与Ti含量不相关.以上结果表明,在弱还原环境中,湖泊沉积物磁性矿物的保存状态及磁学性质与其初始粒径密切相关.通过对磁性矿物信息的系统研究(包括粒径和含量变化等)并结合陆源输入指标(如Ti含量),能够较为准确地反映湖泊环境氧化还原程度的变化.以上结果为正确解译该湖沉积物的环境磁学指标提供了基础. | 苏有亮 高星 刘青松 胡鹏翔 段宗奇 姜兆霞 王君波 朱立平 DOBERSCHUTZ Stefan MAUSBACHER Roland DAUT Gerhard HABERZETTL Torsten | 2012 | 科学通报2012，57，31： | 2 |
| 4 | Soil quality: A concept, definition, and framework for evaluation 显示文摘 | KARLEN D L MAUSBACH M J DORAN J W | 1997 | Soil Science Society of America Journal1997，61，1： | 1 |
| 5 | Soil Quality:a Concept,Definition,and Framework for Evaluation显示文摘 | KARLEN D L MAUSBACH M J DORAN J W | 1997 | Soil Science Society of American Journal1997，61，： | 1 |
| 6 | Near- infrared reflectance spectroscopy-principal components regression analyses of soil properties显示文摘 | Chang CW Laird DA Mausbach MJ Hurburgh CR | 2001 | Soil Science Society of America Journal2001，，65： | 1 |
| 7 | Combined cognitiveremediation and functional skills training for schizophrenia : effects on cognition, functional competence, and real-world behavior显示文摘 | Bowie Ctk McGurk SR Mausbach B | 2012 | Am JPsychiatry2012，169，7： | 1 |
| 8 | Soil Quality: a Concept, Definition, and Framework for Evaluation显示文摘 | KARLEN D L MAUSBACH M J DORAN J W | 1997 | Soil Science Society of American Journal1997，61，： | 1 |
| 9 | Soil quality: A concept, definition, and framework for evaluation 显示文摘 | Karlen D L Mausbach M J Doran J W | 1997 | Soil science of America Journal1997，61，1： | 1 |
| 10 | Soil quality:a con-cept,definition,and frame for evaluation显示文摘 | KARLEN D L MAUSBACH M J DORAN J W | 1997 | Soil Sci Soc Am J1997，61，： | 1 |
| 11 | Near-infrared reflectance spectroscopy-principal components regression analyses of soil properties 显示文摘 | Chang C Laird D A Mausbach M J | 2001 | Soil Science of American Journal2001，65，： | 1 |
| 12 | Soil quality: a concept, definition, and framework for evaluation (a guest editorial) 显示文摘 | Karlen D L Mausbach M J Doran J W | 1997 | Soli Sci Soc Amer1997，61，： | 1 |
| 13 | Soil quality: a concept, definition, and framework for evaluation显示文摘 | KARLEN D L MAUSBACH M J DORAN J W | 1997 | Soil Sci Soc Am J1997，61，： | 1 |
| 14 | Near- infrared reflectance spectroscopy-principal components regression analyses of soil properties显示文摘 | Chang CW Laird D Mausbach M J Hurburgh Jr CR | 2001 | Soil Science Society of America Journal2001，65，2： | 1 |
| 15 | Soil quality:A concept,definition,and framework for evaluation显示文摘 | Karlen D L Mausbach M J Doran J W | 1997 | Soil Sci Soc Am1997，61，： | 1 |
| 16 | Asso-ciation between chronic caregiving stress and impaired endothelial function in the elderly显示文摘 | Mausbach B T Roepke S K Ziegler M G | | 0，，23： | 1 |
| 17 | The terra rossa limestone contact phenomena in karst, South Indiana显示文摘 | OLSON C G RUHE R V MAUSBACH M J | 1980 | Soil Sci Soc Am J1980，44，： | 1 |
| 18 | Near- infrared reflectance spectroscopy-Principal components regression analyses of soil properties显示文摘 | Chang C W Laird D A Mausbach M | 2001 | Soil Science Society of America Journal2001，652，： | 1 |
| 19 | Near-infrared reflectance spectroscopy-principal components regression analyses of soil properties 显示文摘 | Chang C W Laird D A Mausbach M J | 2001 | Soil Science Society of America Journal2001，65，2： | 1 |
| 20 | Combined Cognitive remediation and function skills training for schizophrenia: Effects in cognition, functional competence, and real world behavior 显示文摘 | Bowie CR McGurk SR Mausbach B | 2012 | Am J of Psychiatry2012，169，7： | 1 |
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