汤浦水库湿地森林区大气降水氢氧同位素特征及水汽来源
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摘要
[目的]研究汤浦水库湿地森林区大气降水中的氢氧稳定同位素特征及水汽来源,为定量阐明降水在会稽山-汤浦水库过渡带湿地森林生态系统水文循环过程中的分配和转化规律及绍兴饮水源水质的保护和管理提供科学依据。[方法]采集2015年7月至2017年7月2个水文年166个大气降水样品,利用稳定同位素技术,分析降水氢氧同位素组成,并阐明其与环境因子(温度、降水量)的关系;采用HYSPLIT模型中的后向轨迹法模拟追踪该地区降水气团的运输过程,判断气团的运移轨迹和水汽来源。[结果]汤浦水库湿地森林区大气降水δD与δ18O关系式:δD=8.36δ18O+14.92(R2=0.966,n=166,P<0.01);大气降水中的δD值变化范围-147.52‰~2.71‰,均值-38.13‰±27.61‰;δ18O值变化范围-19.05‰-1.17‰,均值-6.34‰±3.24‰,且不同季节的大气降水氢氧同位素值明显不同;过量氘(d值)(12.61‰)高于全球d值的均值(10‰),呈现干季高湿季低的现象;大气降水δD、δ18O温度效应不显著,但降水量效应显著。[结论]汤浦水库湿地森林区大气降水线与全球及我国大气降水线有差异,降水中的δD、δ18O值有明显的季节变化;根据大气降水中的δD、δ18O值、d值及后向轨迹法模拟结果得出,汤浦水库湿地森林区干季(10月—次年4月)大气降水的水汽主要来源于内陆地区,湿季(5月—9月)的水汽主要来源于西太平洋和印度洋。
[Objective]To study the characteristics of hydrogen and oxygen stable isotope in precipitation and the source of regional atmospheric precipitation in wetland forest area of Tangpu reservoir and to provide reference information for water resource conservation and management by clarifying quantitatively the distribution and transformation of precipitation in the process of hydrologic cycle in the forest ecosystem of the Kuaijishan-Tangpu reservoir transition zone. [Method]In this study,the data of hydrogen-oxygen isotope in 166 atmospheric precipitation samples obtained from July 2015 to July 2017 in the Tangpu reservoir wetland forest were analyzed by using isotope technology to examine the composition of hydrogen and oxygen stable isotope and to clarify the relationship between thecomposition and environmental factors(precipitation and temperature). The source and migration path of water vapor were determined by simulating the air mass transmission pathway based on backward trajectory method of the HYSPLIT model. [Result]The relational expression of δD and δ18 O in atmospheric precipitation in the wetland forest area of Tangpu reservoir was δD = 8. 36δ18 O + 14. 92(R2= 0. 966,n = 166,P < 0. 01); the value of δD in precipitation ranged from-147. 52‰ to 2. 71‰,with the average value was-38. 13‰ ± 27. 61‰; the value of δ18 O ranged from-19. 05‰ to-1. 17‰,with the average value was-6. 34‰ ± 3. 24‰,and the values changed significantly among seasons. The value of excess deuterium(12. 61‰) was higher than the global average(10‰),and a seasonal pattern of excess deuterium in atmospheric precipitation with low value in wet season and high value in dry season was found. The "temperature effect"was not obvious whereas the "precipitation effect"existed significantly. [Conclusion] The meteoric water line of the wetland forest is different from the global meteoric water line and China meteoric water line,The values of δD and δ18 O in atmospheric precipitation follows obvious seasonal variation in this area. The seasonal change of the water vapor sources of atmospheric precipitation is obvious. It is concluded that the meteoric water vapor is mainly from the inland areas in dry season(from October to April of the following year),while it mainly comes from the western Pacific and the Indian Ocean in wet season(from May to September) according to hydrogen and oxygen isotopic value in precipitation,excess deuterium,and the results of trajectory simulation.
[Objective]To study the characteristics of hydrogen and oxygen stable isotope in precipitation and the source of regional atmospheric precipitation in wetland forest area of Tangpu reservoir and to provide reference information for water resource conservation and management by clarifying quantitatively the distribution and transformation of precipitation in the process of hydrologic cycle in the forest ecosystem of the Kuaijishan-Tangpu reservoir transition zone. [Method]In this study,the data of hydrogen-oxygen isotope in 166 atmospheric precipitation samples obtained from July 2015 to July 2017 in the Tangpu reservoir wetland forest were analyzed by using isotope technology to examine the composition of hydrogen and oxygen stable isotope and to clarify the relationship between thecomposition and environmental factors(precipitation and temperature). The source and migration path of water vapor were determined by simulating the air mass transmission pathway based on backward trajectory method of the HYSPLIT model. [Result]The relational expression of δD and δ18 O in atmospheric precipitation in the wetland forest area of Tangpu reservoir was δD = 8. 36δ18 O + 14. 92(R2= 0. 966,n = 166,P < 0. 01); the value of δD in precipitation ranged from-147. 52‰ to 2. 71‰,with the average value was-38. 13‰ ± 27. 61‰; the value of δ18 O ranged from-19. 05‰ to-1. 17‰,with the average value was-6. 34‰ ± 3. 24‰,and the values changed significantly among seasons. The value of excess deuterium(12. 61‰) was higher than the global average(10‰),and a seasonal pattern of excess deuterium in atmospheric precipitation with low value in wet season and high value in dry season was found. The "temperature effect"was not obvious whereas the "precipitation effect"existed significantly. [Conclusion] The meteoric water line of the wetland forest is different from the global meteoric water line and China meteoric water line,The values of δD and δ18 O in atmospheric precipitation follows obvious seasonal variation in this area. The seasonal change of the water vapor sources of atmospheric precipitation is obvious. It is concluded that the meteoric water vapor is mainly from the inland areas in dry season(from October to April of the following year),while it mainly comes from the western Pacific and the Indian Ocean in wet season(from May to September) according to hydrogen and oxygen isotopic value in precipitation,excess deuterium,and the results of trajectory simulation.
引文
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[14]Xie L H,Wei G J,Deng W F,et al.Dailyδ18O andδD of precipitations from 2007 to 2009 in Guangzhou,South China:Implications for changes of moisture sources[J].Journal of Hydrology,2011,400(3/4):477-489.
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[16]宋献方,唐瑜,张应华,等.北京连续降水水汽输送差异的同位素示踪[J].水科学进展,2017,28(4):488-495.
[17]陈衍婷,杜文娇,陈进生,等.厦门地区大气降水氢氧同位素组成特征及水汽来源探讨[J].环境科学学报,2016,36(2):667-674.
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[21]黄锦忠,谭红兵,王若安,等.我国西北地区多年降水的氢氧同位素分布特征研究[J].水文,2015,35(1):33-39,50.
[22]章新平,田立,刘晶淼,等.沿三条水汽输送路径的降水中δ18O变化特征[J].地理科学,2005,25(2):190-196.
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[25]郑淑蕙,侯发高,倪葆龄.我国大气降水的氢氧稳定同位素研究[J].科学通报,1983,28(13):801-806.
[26]卫克勤,林瑞芬.论季风气候对我国雨水同位素组成的影响[J].地球化学,1994,23(1):33-41.
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[28]Merlivat L,Jouzel J.Global climatic interpretation of the deuterium-oxygen-18 relationship for precipitation[J].Journal of Geophysical Research,1979,84(C8):5029-5033.
[29]Jouzel J,Merilvat L.Deuterium and oxygen-18 in precipitation:modeling of the isotope effects during snow formation[J].Journal of Geophysical Research,1984,89(D7):11749-11757.
[30]Craig H.Isotopic variations in meteoric waters[J].Science,1961,133(3465):1702-1703.
[31]章新平,姚檀栋.我国降水中δ18O的分布特点[J].地理学报,1998,53(4):356-364.
[32]李廷勇,李红春,沈川州,等.2006—2008年重庆大气降水δD和δ18O特征初步分析[J].水科学进展,2010,21(6):757-764.
[33]IAEA/WMO.Global network for isotope in precipitation(EB/OL).http://isohis.iaea.org.,1997.
[34]陈中笑,程军,郭品文,等.中国降水稳定同位素的分布特点及其影响因素[J].大气科学学报,2010,33(6):667-679.
[35]王涛,张洁茹,刘笑,等.南京大气降水氧同位素变化及水汽来源分析[J].水文,2013,33(4):25-31.
[36]孙晓双,王晓艳,翟水晶,等.台风“麦德姆”福州降水δ18O特征及水汽来源分析[J].自然资源学报,2016,31(06):1041-1050.
[37]董小芳,邓黄月,张峦,等.上海降水中氢氧同位素特征及与ENSO的关系[J].环境科学,2017,38(5):1817-1827.
[38]Welp L R,Lee X,Griffis T J,et al.A meta-analysis of water vapor deuterium-excess in the midlatitude atmospheric surface layer[J].Global Biogeochemical Cycles,2012,26(9):902-906.
[39]Lai C T,Ehleringer J R.Deuterium excess reveals diurnal sources of water vapor in forest air[J].Oecologia,2011,165(1):213-223.
[40]徐庆,刘世荣,安树青,等.卧龙地区大气降水氢氧同位素特征的研究[J].林业科学研究,2006,19(6):679-686.
[41]李广,章新平,张新主,等.云南腾冲地区大气降水中氢氧稳定同位素特征[J].长江流域资源与环境,2013,22(11):1458-1465.
[42]胡菡,王建力.重庆市2013年10—12月大气降水中氢氧同位素特征及水汽来源分析[J].中国岩溶,2015,(3):247-253.
[43]章新平,姚檀栋.青藏高原东北地区现代降水中δD与δ18O的关系研究[J].冰川冻土,1996,18(4):360-365.
[44]Yurtsever Y,Gat J R.Atmospheric waters[M]//Gat J R,Gonfiantini R,eds.Stable Isotope Hydrology:Deuterium and Oxygen-18in the Water Cycle.Vienna:International Atomic Energy Agency,1981,103-142.
[45]蔡明刚,黄奕普,陈敏,等.厦门大气降水的氢氧同位素研究[J].台湾海峡,2000,19(4):446-453.
[46]陈锦芳,曹建平,黄奕普.厦门沿岸地区大气降水中氢、氧稳定同位素组成及其影响因素[J].海洋学研究,2010,28(1):11-17.
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[2]何元庆,姚檀栋,杨梅学,等.玉龙山白水1号冰川区大气降水-冰雪-水文系统内δ18O研究的新结果[J].冰川冻土,2000,22(4):391-393.
[3]Amesbury M J,Charman D J,Newnham R M,et al.Can oxygen stable isotopes be used to track precipitation moisture source in vascular plant-dominated peatlands?[J].Earth and Planetary Science Letters,2015,430:149-159.
[4]李广,章新平,许有鹏,等.滇南蒙自地区降水稳定同位素特征及其水汽来源[J].环境科学,2016,37(4):1313-1320.
[5]刘鑫,宋献方,夏军,等.黄土高原岔巴沟流域降水氢氧同位素特征及水汽来源初探[J].资源科学,2007,29(3):59-66.
[6]Jouzel J,Delaygue G,Landais A,et al.Water isotopes as tools to document oceanic sources of precipitation[J].Water Resources Research,2013,49(11):7469-7486.
[7]高德强,徐庆,张蓓蓓,等.鼎湖山大气降水氢氧同位素特征及水汽来源[J].林业科学研究,2017,30(3):384-391.
[8]边俊景,孙自永,周爱国,等.干旱区植物水分来源的D、18O同位素示踪研究进展[J].地质科技情报,2009,28(4):117-120.
[9]杨梅学,姚檀栋,田立德,等.藏北高原夏季降水的水汽来源分析[J].地理科学,2004,24(4):426-431.
[10]Dansgaard W.Stable isotopes in precipitation[J].Tellus,1964,16(4):436-468.
[11]章新平,关华德,张新主,等.利用稳定同位素大气水平衡模式模拟降水中δ18O的分布[J].冰川冻土,2014,36(5):1058
[12]Kohn M J,Welker J M.On the temperature correlation ofδ18O in modern precipitation[J].Earth and Planetary Science Letters,2005,231(1):87-96.
[13]Yu W,Yao T,Tian L,et al.Relationships betweenδ18O in precipitation and air temperature and moisture origin on a south-north transect of the Tibetan Plateau[J].Atmospheric Research,2008,87(2):158-169.
[14]Xie L H,Wei G J,Deng W F,et al.Dailyδ18O andδD of precipitations from 2007 to 2009 in Guangzhou,South China:Implications for changes of moisture sources[J].Journal of Hydrology,2011,400(3/4):477-489.
[15]陈婕,高德强,徐庆,等.西鄂尔多斯荒漠夏季大气降水氢氧同位素特征与水汽来源[J].林业科学研究,2016,29(6):911-918.
[16]宋献方,唐瑜,张应华,等.北京连续降水水汽输送差异的同位素示踪[J].水科学进展,2017,28(4):488-495.
[17]陈衍婷,杜文娇,陈进生,等.厦门地区大气降水氢氧同位素组成特征及水汽来源探讨[J].环境科学学报,2016,36(2):667-674.
[18]刘相超,宋献方,夏军,等.东台沟实验流域降水氧同位素特征与水汽来源[J].地理研究,2005,24(2):196-205.
[19]柳鉴容,宋献方,袁国富,等.中国东南部季风区大气降水δ18O的特征及水汽来源[J].科学通报,2009,54(22):3521-3531.
[20]张贵玲,角媛梅,何礼平,等.中国西南地区降水氢氧同位素研究进展与展望[J].冰川冻土,2015,37(4):1094-1103.
[21]黄锦忠,谭红兵,王若安,等.我国西北地区多年降水的氢氧同位素分布特征研究[J].水文,2015,35(1):33-39,50.
[22]章新平,田立,刘晶淼,等.沿三条水汽输送路径的降水中δ18O变化特征[J].地理科学,2005,25(2):190-196.
[23]杨诗芳,毛裕定.浙江省近50年气温变化及四季划分[J].浙江气象,2007,29(4):1-6.
[24]郁珍艳,吴利红,高大伟,等.浙江省四季划分方法探讨[J].气象科技,2014,42(3):474-481.
[25]郑淑蕙,侯发高,倪葆龄.我国大气降水的氢氧稳定同位素研究[J].科学通报,1983,28(13):801-806.
[26]卫克勤,林瑞芬.论季风气候对我国雨水同位素组成的影响[J].地球化学,1994,23(1):33-41.
[27]Dansgaard W.The abundance of O18in atmospheric water and water vapour[J].Tellus,1953,5(4):461-469.
[28]Merlivat L,Jouzel J.Global climatic interpretation of the deuterium-oxygen-18 relationship for precipitation[J].Journal of Geophysical Research,1979,84(C8):5029-5033.
[29]Jouzel J,Merilvat L.Deuterium and oxygen-18 in precipitation:modeling of the isotope effects during snow formation[J].Journal of Geophysical Research,1984,89(D7):11749-11757.
[30]Craig H.Isotopic variations in meteoric waters[J].Science,1961,133(3465):1702-1703.
[31]章新平,姚檀栋.我国降水中δ18O的分布特点[J].地理学报,1998,53(4):356-364.
[32]李廷勇,李红春,沈川州,等.2006—2008年重庆大气降水δD和δ18O特征初步分析[J].水科学进展,2010,21(6):757-764.
[33]IAEA/WMO.Global network for isotope in precipitation(EB/OL).http://isohis.iaea.org.,1997.
[34]陈中笑,程军,郭品文,等.中国降水稳定同位素的分布特点及其影响因素[J].大气科学学报,2010,33(6):667-679.
[35]王涛,张洁茹,刘笑,等.南京大气降水氧同位素变化及水汽来源分析[J].水文,2013,33(4):25-31.
[36]孙晓双,王晓艳,翟水晶,等.台风“麦德姆”福州降水δ18O特征及水汽来源分析[J].自然资源学报,2016,31(06):1041-1050.
[37]董小芳,邓黄月,张峦,等.上海降水中氢氧同位素特征及与ENSO的关系[J].环境科学,2017,38(5):1817-1827.
[38]Welp L R,Lee X,Griffis T J,et al.A meta-analysis of water vapor deuterium-excess in the midlatitude atmospheric surface layer[J].Global Biogeochemical Cycles,2012,26(9):902-906.
[39]Lai C T,Ehleringer J R.Deuterium excess reveals diurnal sources of water vapor in forest air[J].Oecologia,2011,165(1):213-223.
[40]徐庆,刘世荣,安树青,等.卧龙地区大气降水氢氧同位素特征的研究[J].林业科学研究,2006,19(6):679-686.
[41]李广,章新平,张新主,等.云南腾冲地区大气降水中氢氧稳定同位素特征[J].长江流域资源与环境,2013,22(11):1458-1465.
[42]胡菡,王建力.重庆市2013年10—12月大气降水中氢氧同位素特征及水汽来源分析[J].中国岩溶,2015,(3):247-253.
[43]章新平,姚檀栋.青藏高原东北地区现代降水中δD与δ18O的关系研究[J].冰川冻土,1996,18(4):360-365.
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