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climatic implications of seasonal δ13c in tree rings from Huangling of Shaanxi Province

chinese Science Bulletin 1996年第4期41卷 326-329页

作者：李正华刘荣谟安芷生吴祥定 State Key Laboratory of Loess and Quaternary Geology Chinese Academy of Sciences Xi' an 710054 China Institute of Geograhpy Chinese Academy of SciencesBeijing 100101China

The study on stable isotopic compositions of tree rings is playing an important role in reconstructing past climatic variations on the annual scale. Recently, a higher resolution study on seasonal variation in stable isotopic compositions of tree rings is developing. Some significant results on this aspect have been obtained, and all of them seem to respond to the moisture stress of growing season. Also, the seasonal δ ¹³c patterns in tree

关键词： seasonal δ13c climatic implications tree ring.

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Effects of maize (Zea mays L.) growth and photosynthesis on δ13c in soil respiration

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中国高等学校学术文摘·农学 2007年第4期1卷 405-410页

作者： YANG Lanfang cAI Zucong QI Shihua School of Resource and Environmental Science Hubei UniversityWuhan 430062China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China School of Environmental Studies China University of GeosciencesWuhan 430074China

As a safe,stable and practical labeling method,the natural abundance of 13c has been widely used in a carbon cycle in the soil-plant *** order to understand the effects of maize growth and photosynthesis on the value of δ13c in soil respiration,the value of δ13c in soil respiration was determined by mass spectrum after being trapped in a NaOH solution under a closed static chamber and then turned into barium carbonate in a pot *** results showed that maize growth and photosynthesis significantly affected the value of δ13c in the soil *** maize-planted soil,the value of δ13c in soil respiration had a clear seasonal *** changed with maize growth in the range of-14.57‰ to -12.3‰ and decreased during the period of trumpeting＞ripening＞flowering *** difference of δ13c in soil respiration during various maize growth stages added up to about 2.3‰.However,in bare soil,δ13c in soil respiration ranged from -19.34‰ to -19.13‰ and did not change significantly over *** δ13c in soil respiration in the maize-planted soil was the lowest at flowering *** was mainly due to the decline of the input in assimilates into soil and the decrease in root ***,the δ13c increased at ripening stage,due to the decomposition and ingestion of senescent and died roots by soil *** the planted soil,δ13c in soil respiration was significantly higher during daytime than at nighttime at flowering and ripening *** difference of δ13c in soil respiration between day and night periods added up to about 1.4‰ and 2.1‰ at flowering and ripening stages,*** maize plants at the trumpeting stage decreased the value of δ13c in soil respiration *** difference of δ13c in soil respiration between the treatment of non-shading and shading plants added up to 2.85‰.It was concluded that δ13c in soil respiration was remarkably controlled by the maize growth and photosynthesis in planted *** respiratio

关键词： maize growth photosynthesis soil respiration δ13c

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气相色谱-燃烧-同位素比值质谱法测定发酵液中尿素δ^13c和δ^15N

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质谱学报 2016年第1期37卷 60-67页

作者：李国辉钟其顶王道兵申世刚中国食品发酵工业研究院北京100015 全国食品发酵标准化中心北京100015 河北大学化学与环境科学学院河北省分析科学技术重点实验室河北保定071001

在酸性环境下,尿素与丙二醛-二甲基乙缩醛反应生成2-羟基嘧啶,随后由重氮甲烷甲基化形成2-甲氧基嘧啶。本研究以酵母发酵液为例,建立了气相色谱-燃烧-同位素比值质谱(Gc-c-IRMS)法测定发酵液中尿素δ^(13)c和δ^(15)N,并对前处理方法和G... 详细信息

在酸性环境下,尿素与丙二醛-二甲基乙缩醛反应生成2-羟基嘧啶,随后由重氮甲烷甲基化形成2-甲氧基嘧啶。本研究以酵母发酵液为例,建立了气相色谱-燃烧-同位素比值质谱(Gc-c-IRMS)法测定发酵液中尿素δ^(13)c和δ^(15)N,并对前处理方法和Gc条件进行了优化。结果表明:尿素在不同13 c(0~5%)和15 N(0~10%)标记丰度下,标记量与Gc-c-IRMS测定结果的相关性良好,线性相关系数R2分别为0.998和0.999,说明可在极低标记浓度下对尿素中δ^(13)c和δ^(15)N进行准确测定。采用该方法测定了酵母发酵液尿素中δ^(13)c和δ^(15)N,其重复性相对标准偏差分别为0.21‰和0.30‰,再现性相对标准偏差分别为0.23‰和0.29‰。该方法精度高、准确性好,可为低稳定同位素标记尿素示踪实验以及尿素循环代谢研究提供方法基础。

关键词：尿素衍生化气相色谱-燃烧-同位素比值质谱(Gc-c-IRMS) δ13c δ15N

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Variation in the δ15N and δ13c composition of POM in the Lake Simcoe watershed

Variation in the δ15N and δ13C composition of POM in the L...

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作者： Kamila Anna Baranowska TRENT UNIVERSITY

学位级别：硕士

The purpose of this study was to quantify the variation of baseline carbon and nitrogen stable isotope signatures in the Lake Simcoe watershed and relate that variation to various physicochemical parameters. Particulate organic matter samples from2009 and2011 were used as representatives of baseline isotopic values. Temporal data from two offshore lake stations revealed thatδ 15 N of POM was lowest mid\summer and highest after the fall turnover. POMδ 13 c was variable throughout the summer before declining after fall turnover. Spatial data from the lake and the tributaries revealed that POM stable isotope signatures were highly variable. Various physicochemical parameters indicative of phytoplankton biomass were significantly positively correlated with POMδ 15 N and significantly negatively correlated with POM δ 13 c. The correlations were mostly significant in the tributaries, not the lake. Moreover, many of the correlations involvingδ 15 N of POM were driven by extreme values in cook's Bay and its tributaries. In general, it's likely that different processes or combination of processes were affecting theδ 15 N andδ 13 c POM in the Lake Simcoe watershed as physicochemical parameters alone could not explain the variability. Measuring theδ 15 N of ammonium and nitrate, as well as theδ 13 c of DIc would help discern the dominant nitrogen and inorganic carbon cycling processes occurring in the Lake Simcoe watershed.

关键词： isotopic baseline δ15N δ13c stable isotopes particulate organic matter spatial variation

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沙漠腹地天然绿洲胡杨和柽柳叶片δ13c值对不同地下水埋深的响应

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应用生态学报 2020年第4期31卷 1083-1087页

作者：麦尔哈巴·尼加提戴岳师庆东李涛肖合来提·巴义安外尔·阿布杜热伊木新疆大学资源与环境科学学院乌鲁木齐830046 绿洲生态教育部重点实验室乌鲁木齐830046 新疆大学干旱生态环境研究所乌鲁木齐830046

干旱区植物的水分利用效率对植物的分布及水分利用状况具有重要意义。基于不同地下水埋深条件下沙漠腹地绿洲优势种胡杨和柽柳叶片δ13c值,分析了胡杨和柽柳的水分利用效率对不同地下水埋深的响应。结果表明:随着地下水埋深由2.1 m增加... 详细信息

干旱区植物的水分利用效率对植物的分布及水分利用状况具有重要意义。基于不同地下水埋深条件下沙漠腹地绿洲优势种胡杨和柽柳叶片δ13c值,分析了胡杨和柽柳的水分利用效率对不同地下水埋深的响应。结果表明:随着地下水埋深由2.1 m增加到4.3 m,柽柳叶片的δ13c值先略有增加后处于较为稳定状态,柽柳采取较为稳定的水分利用效率适应干旱环境;胡杨叶片的δ13c值呈现先略有减小后增加的趋势,胡杨通过提高水分利用效率的策略适应干旱胁迫。同一地下水埋深条件下柽柳叶片的δ13c值高于胡杨叶片,表明柽柳的水分利用效率高于胡杨。

关键词：水分利用效率沙漠腹地 δ13c 地下水埋深

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美洲黑杨及其杂种F1不同生长势无性系叶片δ^13c和氮素利用效率

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林业科学 2013年第8期49卷 51-57页

作者：高暝黄秦军丁昌俊苏晓华林木遗传育种国家重点实验室国家林业局林木培育重点实验室中国林业科学研究院林业研究所北京100091

以美洲黑杨不同生长势的杂种F1及其亲本为研究对象,通过测定不同冠层叶片的稳定碳同位素组成和碳、氮含量,分析不同生长势美洲黑杨叶片水分利用效率和氮素利用效率之间的差异及其相互关系。结果表明:不同生长势杂种F1的δ13c值及碳、氮... 详细信息

以美洲黑杨不同生长势的杂种F1及其亲本为研究对象,通过测定不同冠层叶片的稳定碳同位素组成和碳、氮含量,分析不同生长势美洲黑杨叶片水分利用效率和氮素利用效率之间的差异及其相互关系。结果表明:不同生长势杂种F1的δ13c值及碳、氮含量均差异显著,超亲杂种F1在每个冠层的叶片δ13c值和碳、氮含量均显著大于低亲杂种F1;美洲黑杨叶片δ13c值与氮含量呈极显著正相关(R2=0.941);叶片δ13c和碳、氮含量存在空间分布差异,树冠上层显著大于中层,下层最小;超亲杂种F1的水分利用效率(WUE)高于低亲杂种F1,但低亲杂种F1的氮素利用效率(NUE)极显著大于超亲杂种F1,WUE和NUE之间呈现显著负相关(R2=-0.652),说明美洲黑杨叶片的水分利用效率和氮素利用效率存在一定的制约关系。

关键词：美洲黑杨 δ13c 水分利用效率氮素利用效率

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垄作免耕对稻田土壤有机碳活性组分和δ13c的影响

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中国农业科学 2013年第5期46卷 978-986页

作者：慈恩朱洁彭娟符卓旺高明谢德体西南大学资源环境学院重庆市三峡库区农业面源污染控制工程技术研究中心

【目的】阐明垄作免耕对稻田土壤有机碳活性组分和δ13c的影响,为揭示垄作免耕下稻田土壤累积、转化的特殊性提供科学参考。【方法】依托稻田免耕长期定位试验,对比分析常规平作(中稻)、垄作免耕(中稻)、水旱轮作(中稻-油菜,稻油)和垄... 详细信息

【目的】阐明垄作免耕对稻田土壤有机碳活性组分和δ13c的影响,为揭示垄作免耕下稻田土壤累积、转化的特殊性提供科学参考。【方法】依托稻田免耕长期定位试验,对比分析常规平作(中稻)、垄作免耕(中稻)、水旱轮作(中稻-油菜,稻油)和垄作免耕轮作(中稻-油菜,稻油)等4种耕作处理对不同深度(0—10 cm、10—20 cm、20—40 cm和40—60 cm)土层中总有机碳、颗粒有机碳、易氧化有机碳和δ13c等指标的影响。【结果】垄作免耕轮作(稻油)中,20—40 cm土层的总有机碳含量显著高于其它处理,各深度土层中颗粒有机碳含量和分配比例均高于其它耕作处理,10—20 cm和20—40 cm土层的易氧化有机碳含量显著高于其它耕作处理(P<0.05)。水旱轮作(稻油)中,各土层的总有机碳含量、颗粒有机碳含量和易氧化有机碳含量均低于其它耕作处理。不同处理中,土壤碳库管理指数的最高值和最低值分别出现在垄作免耕轮作(稻油)的20—40 cm土层和水旱轮作(稻油)的40—60 cm土层,垄作免耕轮作(稻油)的10—20 cm和20—40 cm土层碳库管理指数显著高于其它处理(P<0.05)。相比其它处理,垄作免耕轮作(稻油)的土壤有机碳δ13c值在0—40 cm深度范围的各土层中差异不大,到40—60 cm土层才出现显著升高。【结论】相比其它耕作处理,长期(20年)垄作免耕轮作(稻油)稻田20—40 cm土层中增碳优势突出,该耕作处理有利于稻田中土壤颗粒有机碳的形成和累积,对20—40 cm土层中活性碳库的稳定和保护作用明显优于其它耕作处理;有大量活性高、降解程度低的有机碳在垄作免耕轮作(稻油)的20—40 cm土层中累积。

关键词：垄作免耕稻田颗粒有机碳易氧化有机碳 δ13c

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High-resolution climate recorded in the δ13c of Porites lutea from Nansha Islands of china

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Progress in Natural Science:Materials International 2002年第4期 46-50页

作者： YU Kefu, LIU Tungsheng , cHEN Tegu , ZHONG Jinliang and ZHAO Huanting( South china Sea Institute of Oceanology, chinese Academy of Sciences, Guangzhou 510301, china Institute of Geology and Geophysics, chinese Academy of Sciences, Beijing 100029, china)

A Porites Lutea core from Yongshu Reef of Nansha Islands covering 50-year growth history is analyzed for carbon iso-topic composition with monthly and seasonal resolution, and the results show that the coral δ13c generally has clear yearly cycles. The calibration indicates that the coral δ13c can record the sunshine duration, total cloud cast and rainfall of the Yongshu Reef, and it also shows significant association to El Nino events. From 1950 to 1999, the δ13c shows a clear long-term declining trend, which indicates a decrease in the sunshine duration and an increase in cloud cast and rainfall over Yongshu Reef over the past fifty years.

关键词： Nansha Islands Parties lutea δ13c sunshine duration EI Nino.

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施氏鲟不同组织中δ13c和δ15N值的变化规律

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水产学杂志 2019年第6期32卷 23-28页

作者：李雷王念民都煜李娜马波中国水产科学研究院黑龙江水产研究所农业农村部黑龙江流域渔业资源与环境重点野外科学观测试验站黑龙江哈尔滨150070

2015年春季向当地渔民收购黑龙江中游抚远江段体质量范围为(40.9~3500.8)g的施氏鲟Acipenser schrenckii样本17尾,测定背部肌肉、骨板、鳃和肝等组织的δ13c和δ15N,利用单因素方差分析对比4种组织的δ13c和δ15N平均值和δ13c以及δ15... 详细信息

2015年春季向当地渔民收购黑龙江中游抚远江段体质量范围为(40.9~3500.8)g的施氏鲟Acipenser schrenckii样本17尾,测定背部肌肉、骨板、鳃和肝等组织的δ13c和δ15N,利用单因素方差分析对比4种组织的δ13c和δ15N平均值和δ13c以及δ15N的两两之间的关系。结果表明:(1)施氏鲟四种组织的δ13c以及δ15N平均值均存在显著性差异(P<0.01);(2)施氏鲟4种组织两两之间的δ13c具有显著的线性关系,背部肌肉、骨板和鳃等3种组织两两之间的δ15N具有显著的线性关系。本文首次研究了δ13c和δ15N在施氏鲟不同组织中的变化规律,可为利用碳氮稳定同位素技术研究施氏鲟食物来源及营养级位置的取样提供参考。

关键词：稳定同位素施氏鲟 δ13c δ15N

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Isotopic composition (δ¹³c, δ¹⁸O) in wood and cellulose of Siberian larch trees for early Medieval and recent periods

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JOURNAL OF GEOPHYSIcAL RESEARcH-BIOGEOScIENcES 2008年第G2期113卷

作者： Sidorova, Olga V. Siegwolf, Rolf T. W. Saurer, Matthias Naurzbaev, Mukhtar M. Vaganov, Eugene A. Akademgorodok VN Sukachev Inst Forest SB RAS Krasnoyarsk 660036 Russia Paul Scherrer Inst CH-5232 Villigen Switzerland Siberian Fed Univ Krasnoyarsk Russia

We related tree ring width (TRW) and isotopic composition (delta c-13, delta O-18) of wood and cellulose from four larch trees (Larix cajanderi Mayr.) to climate parameters. The material was sampled in northeastern Yakutia [70 degrees N-148 degrees E] for the recent (AD 1880-2004) and early Medieval (AD 900-1000) periods. During the recent period June, July, and August air temperatures were positively correlated with delta c-13 and delta O-18 of wood and cellulose, while July precipitation was negatively correlated. Furthermore, the vapor pressure deficit (VPD) of July and August was significantly correlated with delta c-13 of wood and cellulose, but VPD had almost no influence on delta O-18. comparative analyses between mean isotope values for the (AD 900-1000) and (AD 1880-2004) periods indicate similar ranges of climatic conditions, with the exception of the period AD 1950-2004. While isotopic ratios in cellulose are reliably related to climatic variables, during some periods those in whole wood showed even stronger relationships. Strong positive correlations between delta O-18 of cellulose and Greenland ice-core (GISP2) data were detected for the beginning of the Medieval period (r = 0.86;p < 0.05), indicating the reliability of isotope signals in tree rings for large-scale reconstructions.

关键词： northeastern Yakutia tree ring width δ13c δ18O of wood and cellulose climatic variability Medieval and recent periods Greenland ice core

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