欢迎访问中国科学院大学学报,今天是
环境科学与地理学

中国北方农牧交错带草本植物δ15N梯度变化及其对环境信息的指示

  • 刘贤赵 ,
  • 张勇 ,
  • 宿庆 ,
  • 李振国 ,
  • 冯腾 ,
  • 宋焱
展开
  • 1 湖南科技大学资源环境与安全工程学院, 湖南 湘潭 411201;
    2 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室, 南京 210000;
    3 湖南科技大学生命科学学院, 湖南 湘潭 411201

收稿日期: 2017-07-24

  修回日期: 2017-11-30

  网络出版日期: 2018-11-15

基金资助

土壤与农业可持续发展国家重点实验室基金(Y412201416)、湖南省自然科学基金(2015JJ2062)和湖南省教育厅重点项目(14A054)资助

Gradient variation of δ15N values in herbs and its indication to environmental information in the agro-pastoral ecotone in the north of China

  • LIU Xianzhao ,
  • ZHANG Yong ,
  • SU Qing ,
  • LI Zhenguo ,
  • FENG Teng ,
  • SONG Yan
Expand
  • 1 School of Resource, Environment and Safety Engineering, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China;
    2 State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210000, China;
    3 College of Life Science, Hunan University of Science and Technology, Xiangtan 411201, Hunan, China

Received date: 2017-07-24

  Revised date: 2017-11-30

  Online published: 2018-11-15

摘要

植物氮同位素组成(δ15N)是气候环境变化和生态系统氮循环的综合结果,开展典型区域植物δ15N的研究可以指示气候环境的变化。沿400mm等降水量线测定中国北方农牧交错带草本植物和土壤的δ15N值,并将δ15N值与气候环境因子进行统计分析。结果表明:1)样带草本植物δ15N值分布在-5.5‰~15.3‰之间(平均值4.02‰),其中,C3草本植物的δ15N值范围(-5.5‰~15.0‰)比C4植物(-2.85‰~15.3‰)宽,但平均值显著低于C4植物;土壤δ15N值范围为1.42‰~9.11‰,平均值为4.74‰;2) C3、C4草本植物整体以及2种广适性草本植物的δ15N值与经纬度均呈显著正相关性(C4草本植物δ15N值与经度关系不显著除外),但与海拔关系微弱;3)植物/土壤的δ15N值均随温度升高呈显著偏负趋势,其中C3、C4草本植物的温度系数分别为-0.41‰/℃和-0.39‰/℃,但植物δ15N值随降水增加呈微弱偏负趋势;4)偏相关分析显示,在控制降水变化后,草本植物δ15N值与年平均温度的相关性更加显著,而在控制温度变化后,植物δ15N值与年平均降水量的关系更加微弱。研究表明在水分变化相对较小的条件下,温度可能是控制本样带植物δ15N值变化的关键因子,意味着植物δ15N信息可以指示中国北方农牧交错带温度的变化。

本文引用格式

刘贤赵 , 张勇 , 宿庆 , 李振国 , 冯腾 , 宋焱 . 中国北方农牧交错带草本植物δ15N梯度变化及其对环境信息的指示[J]. 中国科学院大学学报, 2018 , 35(6) : 749 -760 . DOI: 10.7523/j.issn.2095-6134.2018.06.006

Abstract

Nitrogen isotope signature (δ15N) in plants is an effective indicator for evaluating ecosystem nitrogen cycling and monitoring changes of climate environment. Investigation of δ15N for herbs and soils was conducted along the 400mm isoline of annual mean precipitation in the agro-pastoral ecotone in the north of China(APENC). The relationships between the δ15N values and environmental factors were analyzed. The main results are shown as follows. 1)The δ15N values of all herbs in this region ranged between -5.5‰ and -15.3‰ (the mean value:4.02‰). The C3 herbs had a wider range of the δ15N value (-5.5‰-15.0‰) and a significantly lower mean value than the C4 herbs (-2.85‰-15.3‰). The soil δ15N value varied from 1.42‰ to 9.11‰ with a mean value of 4.74‰. 2)The δ15N values of the C3 and C4 herbs and 2 eurytopic species were all positively correlated with the latitude and longitude(except the relationship between δ15N of C4 herbs and longitude), while displayed a weak relationship with the altitude. 3)The δ15N values of herbs amd soil showed obviously negative trends with temperature. The δ15N-temperature coefficients for C3 and C4 herbs were -0.41‰/℃ and -0.39‰/℃, respectively. However, the δ15N values of herbs showed a weak negative trend with precipitation. 4)Partial correlation analysis showed that the correlation between δ15N and the annual mean temperature was more significant after controlling precipitation. However, the relation between herbs δ15N and the annual mean precipitation was weaker after controlling temperature. This study indicates that the temperature may be a key factor affecting plant δ15N under the condition of little moisture change, and the δ15N value may provide an indication to temperature changes in APENC.

参考文献

[1] Aranibar J N, Otter L, Macko S A, et al. Nitrogen cycling in the soil-plant system along a precipitation gradient in the Kalahari sands[J]. Global Change Biology, 2004, 10(3):359-373.
[2] Handley L L, Raven J A. The use of natural abundance of nitrogen isotopes in plant physiology and ecology[J]. Plant Cell & Environment, 2006, 15(9):965-985.
[3] Sah S P, Brumme R B. Altitudinal gradients of natural abundance of stable isotopes of nitrogen and carbon in the needles and soil of a pine forest in Nepal[J]. Journal of Forest Science, 2003, 49:19-26.
[4] Templer P H, Arthur M A, Lovett G M, et al. Plant and soil natural abundance δ15N:indicators of relative rates of nitrogen cycling in temperate forest ecosystems[J]. Oecologia, 2007, 153(2):399-406.
[5] Kahmen A, Wanek W, Buchmann N. Foliar δ15N values characterize soil N cycling and reflect nitrate or ammonium preference of plants along a temperate grassland gradient[J]. Oecologia, 2008, 156(4):861-870.
[6] Cheng S L, Fang H J, Yu G R, et al. Foliarand soil δ15N natural abundances provide field evidence onnitrogen dynamics in temperate and boreal forest ecosystems[J].Plant and Soil, 2010, 337:285-297.
[7] Liu W G, Wang Z. Nitrogen isotopic composition of plantsoil in the Loess Plateau and its responding to environmental change[J]. Chinese Science Bulletion, 2009, 54(2):272-279.
[8] Kang H Z, Liu C J, Yu W J, et al. Variation in foliar δ15N among oriental oak stands over eastern China:patterns and interactions[J]. Journal of Geochemical Exploration, 2011, 110:8-14.
[9] Liu X H, Zhao L J, Menassie G, et al. Foliar δ13C and δ15N values of C3 plants in the Ethiopia Rift Valley and their environmental controls[J]. Chinese Science Bulletin, 2007, 52(9):1265-1273.
[10] Chang C C, McCormick P V, Newman S, et al. Isotopic indicators of environmental change in a subtropical wetland[J]. Ecological Indicators, 2009, 9(5):825-836.
[11] Makarov M I. The nitrogen isotopic composition in soils and plants:its use in environmental studies[J]. Eurasian Soil Science, 2009, 42(12):1335-1347.
[12] Wang L X, D'Odorico P, Ries L, et al. Patterns and implications of plant-soil δ13C and δ15N values in African savanna ecosystems[J]. Quaternary Research, 2010, 73(1):77-83.
[13] Fang Y T, Koba K, Yoh M, et al. Patterns of foliar δ15N and their control in Eastern Asian forests[J]. Ecological Research, 2013, 28(5):735-748.
[14] Yang Y H, Ji C J, Robinson D, et al. Vegetation and soil 15N natural abundance in alpine grasslands onthe Tibetan Plateau:patterns and implications[J]. Ecosystems, 2013, 16(6):1013-1024.
[15] Ariz I, Cruz C, Neves T, et al. Leaf δ15N as a physiological indicator of the responsiveness of N2-fixing alfalfa plants to elevated CO2, temperature and low water availability[J]. Frontiers in Plant Science, 2015, 6:1-10.
[16] Terwilliger V J, Eshetu Z, Colman A, et al. Reconstructing palaeoenvironment from δ13C and δ15N values of soil organic matter:a calibration from arid and wetter elevation transects in Ethiopia[J]. Geoderma, 2008, 147:197-210.
[17] Schatz A K, Zech M, Buggle B, et al. The late Quaternary loess record of Tokaj, Hungary:reconstructing palaeoenvironment, vegetation and climate using stable C and N isotopes and biomarkers[J]. Quaternary International, 2011, 240(1/2):52-61.
[18] Das O, Wang Y, Donoghue J, et al. Reconstruction of paleostorms and paleoenvironment using geochemical proxiesarchived in the sediments of two coastal lakes in northwest Florida[J]. Quaternary Science Reviews, 2013, 68(3):142-153.
[19] Liu J C, Liu W G. Soil nitrogen isotopic composition of the Xifeng loess-paleosol sequence and its potential for use as a paleoenvironmental proxy[J]. Quaternary International, 2017, 440:35-41.
[20] 尚晓冬, 时国, 韦恒叶. 贵阳花溪地区早三叠世碳、氧同位素特征及其古环境意义[J]. 中国科学院大学学报, 2015, 32(3):363-372.
[21] Amundson R, Austin A T, Schuur E A G, et al. Global parrerns of the isotopic composition of soil and plant nitrogen[J]. Global Biogeochem Cycles, 2003, 17(1):1-11.
[22] Amundson R. New insights into the global patterns of the isotopic composition of soil and plant nitrogen[J]. Esa Convention,2014,17(1):2076-2079.
[23] Swap R J, Aranibar J N, Dowty P R, et al. Natural abundance of 13C and 15N in C3 and C4 vegetation of southern Africa:patterns and implications[J]. Global Change Biology, 2004, 10(3):359-373.
[24] Craine J M, Elmore A J, Aidar M P, et al. Global patterns of foliar nitrogenisotopes and their relationshipswith climate, mycorrhizal fungi, foliar nutrient concentrations, and nitrogen availability[J]. New Phytologist, 2009, 183(4):980-992.
[25] Peri P, Ladd B, Pepper D, et al. Carbon (δ13C)and nitrogen (δ15N) stable isotope compositionin plant and soil in Southern Patagonia's native forests[J]. Global Change Biology, 2012, 18(1):311-321.
[26] Martinelli L A, Piccolo M C, Townsend A R, et al. Nitrogen stable isotopic composition of leaves and soil:tropical versus temperate forests[J]. Biogeochemistry, 1999, 46(1-3):45-65.
[27] 刘艳杰, 许宁, 牛海山. 内蒙古草原常见植物叶片δ13C和δ15N对环境因子的响应[J]. 生态学报, 2016, 36(1):235-243.
[28] Xu Y, He J C, Cheng W X, et al. Natural 15N abundance in soils and plants in relation to N cyclingin a rangeland in Inner Mongolia[J]. Journal of Plant Ecology, 2010, 3(3):201-207.
[29] 刘贤赵, 王国安, 李嘉竹, 等. 中国北方农牧交错带C3草本植物δ13C与温度的关系及其对水分利用效率的指示[J]. 生态学报, 2011, 31(1):123-136.
[30] Cheng W X,Chen Q S,Xu Y Q, et al. Climate and ecosystem 15N natural abundance along a transectof Inner Mongolian grasslands:contrasting regional patternsand global patterns[J]. Global Biogeochemical Cycles, 2009, 23:1-11.
[31] Ma J Y, Sun W, Liu X N, et al. Variation in the stable carbon and nitrogen isotope composition of plants and soil along a precipitation gradient in Northern China[J]. PLoS ONE, 2012, 7(12):e51894. Doi:10.1371/journal.pone.0051894.
[32] Peterson B J, Fry B. Stable isotopes in ecosystem studies[J]. Annual Review of Ecology & Systematics, 1987, 18(1):293-320.
[33] Aranibar J N, Anderson I C, Epstein H E, et al. Niriogen isotope composition of soils, C3 and C4 plants along land use gradients in southern Africa[J]. Journal of Arid Environments, 2008, 72(4):326-337.
[34] Ometto J P H B, Ehleringer J R, Domingues T F,et al. The stable carbon and nitrogen isotopic composition of vegetation in tropical forests of the AmazonBasin, Brazil[J]. Biogeochemistry, 2006, 79(1/2):251-274.
[35] Houlton B Z, Sigman D M, Hedin L O. A climate-driven switch in plant nitrogen acquisition within tropical forest communities[J]. Proceedings of the National Academy of Sciences of the United States of America, 2007, 104(21):8902-8906.
[36] Sutton M A, Schjorring J K, Wyers G P. Plant-atmosphere exchange of ammonia[J]. Philosophical Transactions:Physical Sciences and Engineering, 1995, 351(1696):261-278.
[37] Bai E, Boutton TW, Liu F, et al. Spatial variation of the stable nitrogen isotope ratio of woody plants along a topoedaphic gradient in a subtropical savanna[J]. Oecologia, 2009, 159(3):493-503.
[38] Yi X F, Yang Y Q. Enrichement of stable carbon and nitrogen isotopes of plant populations and planteau pikas along altitudes[J]. Journal of Animal & Feedences, 2006, 15(4):661-667.
[39] Liu X Z, Wang G A, Li J Z, et al. Nitrogen isotope composition characteristics of modern plants andtheir variations along an altitudinal gradient in Dongling Mountain in Beijing. Science China-Earth Sciences, 2010, 53(1):128-140.
文章导航

/