脱甲河氢氧同位素组分时空分布特征及其影响因素
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摘要
河水氢氧稳定同位素特征是研究水体转化和示踪水循环过程的重要内容.为研究河水氢氧稳定同位素特征,揭示河水补给来源,于2017年4—8月对亚热带农业小流域脱甲河4级河段(S_1、S_2、S_3和S_4)水体氢(D)、氧(~(18)O)稳定同位素进行了监测,分析其时空动态特征和过量氘(d-excess)的变化规律,并探讨了它们与降水、高程和水质等影响因子的相关关系.结果表明:δD、δ~(18)O和d-excess的变化范围分别在-43.17‰~-26.43‰(-35.50‰±5.44‰)、-7.94‰~-5.70‰(-6.86‰±0.74‰)和16.77‰~23.49‰(19.39‰±1.95‰).受季风环流的影响,δD和δ~(18)O具有明显的季节变化特征,即春季(δD和δ~(18)O为-29.88‰±3.31‰和-6.18‰±0.57‰)>夏季(δD和δ~(18)O为-39.25‰±2.65‰和-7.32‰±0.42‰);空间上,δD和δ~(18)O表现出明显的沿程变化,随着采样点的位置到河流源头的距离波动增加,δD为S_1 The characteristics of hydrogen and oxygen stable isotopes in river is important for regional hydrologic cycle research. To uncover water supply sources in subtropical agricultural basin from a perspective of stable isotopes,field measurements were conducted in four reaches( S_1,S_2,S_3 and S_4) of Tuojia River from April to August 2017. We analyzed the spatial and temporal variations in hydrogen and oxygen isotopes and deuterium excess parameters and their relationship with precipitation,altitude and water quality. Results showed that hydrogen and oxygen isotopes and deuterium excess values ranged from-43. 17‰ to-26. 43‰(-35. 50‰ ± 5. 44‰),-7. 94‰ to-5.70‰(-6.86‰± 0.74‰),and 16.77‰ to 23. 49‰( 19. 39‰ ± 1. 95‰),respectively. Under the influence of monsoon circulation,hydrogen and oxygen isotopes showed substantial seasonal variation,with spring( δD:-29.88‰±3.31‰; δ~(18)O:-6.18‰±0.57‰) > summer( δD:-39.25‰±2.65‰; δ~(18)O:-7.32‰± 0.42‰). The spatial distribution of hydrogen and oxygen isotopes values increased fluctuantly with the position from the sampling site to the river's source,with δD: S_1
引文
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[26]Wu H-B(吴红宝),Qin X-B(秦晓波),Lyu C-W(吕成文),et al.Spatial and temporal distribution of dissolved organic carbon in Tuojia River watershed.Journal of Agro-Environment Science(农业环境科学学报),2016,35(10):1968-1976(in Chinese)
[27]Zhou Y(周毅),Wu H-W(吴华武),He B(贺斌),et al.Study on spatial and temporal variations ofδ18O andδD in Yangtze River water and its factors.Resources and Environment in the Yangtze Basin(长江流域资源与环境),2017,26(5):678-686(in Chinese)
[28]Xu Q,Hoke GD,Liu ZJ,et al.Stable isotopes of surface water across the Longmenshan margin of the eastern Tibetan Plateau.Geochemistry,Geophysics,Geosystems,2015,15:3416-3429
[29]Mao W(毛巍),Liang Z-W(梁志伟),Li W(李伟),et al.Research advances in identifying nitrate pollution sources of water environment by using nitrogen and oxygen stable isotopes.Chinese Journal of Applied Ecology(应用生态学报),2013,24(4):1146-1152(in Chinese)
[30]Wu H-B(吴红宝),Lyu C-W(吕成文),Li Y-E(李玉娥),et al.The spatial-temporal distribution of soil and sediment nitrogen and N2O emission in agricultural watershed of Tuojia River.Acta Scientiae Circumstantiae(环境科学学报),2017,37(4):1539-1546(in Chinese)
[31]Zhang X-P(章新平),Yao T-D(姚檀栋).Distribution features ofδ18O in precipitation in China.Acta Geographica Sinica(地理学报),1998,53(4):356-364(in Chinese)
[32]Liu J-D(刘进达),Zhao Y-C(赵迎昌),Liu E-K(刘恩凯),et al.Discussion on the stable isotope timespace distribution law of China atmospheric precipitation.Site Investigation Science and Technology(勘察科学技术),1997(3):34-39(in Chinese)
[33]Wei K-Q(卫克勤),Lin R-F(林瑞芬).The influence of the monsoon climate on the isotopic composition of precipitation in China.Geochimica(地球化学),1994,23(1):32-41(in Chinese)
[34]Wang Y-S(王永森),Ma Z-M(马振民),Xu Z-H(徐征和).Slope of evaporation lines in a model based on Bayleigh fractionation formula.Advances in Water Science(水科学进展),2011,22(6):795-800(in Chinese)
[35]Gu W-Z(顾慰祖).Isotope Hydrogen.Beijing:Science Press,2011(in Chinese)
[2]Dansgaard W.Stable isotopes in precipitation.Tellus,1964,16:436-468
[3]Schmidt GA,Hoffmann G,Shindell DT,et al.Modeling atmospheric stable water isotopes and the potential for constraining cloud processes and stratosphere-troposphere water exchange.Journal of Geophysical Research,2005,110:1-15
[4]Lu Y,Tang C,Chen J,et al.Spatial characteristics of water quality,stable isotopes and tritium associated with groundwater flow in the Hutuo River alluvial fan plain of the North China Plain.Hydrogeology Journal,2008,16:1003-1015
[5]Li G(李广),Zhang X-P(章新平),Zhang L-F(张立峰),et al.Stable isotope characteristics in different water bodies in Changsha and implications for the water cycle.Environmental Science(环境科学),2015,36(6):2094-2101(in Chinese)
[6]Martinelli LA,Gat JR,de Camargo PB,et al.The Piracicaba River basin:Isotope hydrology of a tropical river basin under anthropogenic stress.Isotopes in Environmental&Health Studies,2004,40:45-56
[7]Deng W-P(邓文平),Zhang J(章洁),Zhang Z-J(张志坚),et al.Stable hydrogen and oxygen isotope compositions in soil-plant-atmosphere continuum(SPAC)in rocky mountain area of Beijing,China.Chinese Journal of Applied Ecology(应用生态学报),2017,28(7):2171-2178(in Chinese)
[8]Huang Y-M(黄一民),Zhang X-P(章新平),Tang F-Y(唐方雨),et al.Variations of precipitation stable isotope and vapor origins revealed by deuterium excess in Changsha.Journal of Natural Resource(自然资源学报),2013,28(11):1945-1954(in Chinese)
[9]Wang Y-J(王亚俊),Song X-F(宋献方),Ma Y(马英),et al.Characterizing the hydrogen and oxygen isotopic compositions of different waters at reclaimed water irrigated district in southeast suburb of Beijing.Geographical Research(地理研究),2017,36(2):361-372(in Chinese)
[10]Craig H.Isotopic Variations in Meteoric Waters.Science,1961,133:1702-1703
[11]Xu L-L(徐磊磊),Liu J-L(刘敬林),Jin C-J(金昌杰),et al.Baseflow separation methods in hydrological process research:A review.Chinese Journal of Applied Ecology(应用生态学报),2011,22(11):3073-3080(in Chinese)
[12]Cheng Y-T(成玉婷),Li P(李鹏),Xu G-C(徐国策),et al.Characteristics of hydrogen and oxygen isotopes in Danjiang watershed.Journal of Soil and Water Conservation(水土保持学报),2014,28(5):129-133(in Chinese)
[13]Yao J-Q(姚俊强),Liu Z-H(刘志辉),Guo X-Y(郭小云),et al.Characteristics of water isotopes(18O and2H)in the Hutubi River basin,northestern China.Journal of Desert Research(中国沙漠),2016,36(5):1443-1450(in Chinese)
[14]Yan X-J(闫晓景).Temporal and Spatial Characteristics ofδD andδ18O of Water in the Quanfuzhuang River Basin of Hani Rice Terraces Region.Master Thesis.Kunming:Yunnan Normal University,2017(in Chinese)
[15]Li J-R(李继荣),Zhao J-Y(赵健宇),Yang L(杨乐),et al.Stable hydrogen and oxygen isotopes in waters in Tibet.Arid Zone Research(干旱区研究),2017,34(2):411-415(in Chinese)
[16]Xiao K(肖可),Shen L-C(沈立成),Wang P(王鹏).Hydrogen and oxygen isotopes of lake water and geothermal spring water in arid area of south Tibet.Environmental Science(环境科学),2014,35(8):2952-2958(in Chinese)
[17]Yao T-C(姚天次),Zhang X-P(章新平),Li G(李广),et al.Characteristics of the stable isotopes in different water bodies and their relationships in surrounding areas of Yuelu Mountain in the Xiangjiang River basin.Journal of Natural Resources(自然资源学报),2016,31(7):1198-1210(in Chinese)
[18]Wu H-W(吴华武),Zhang X-P(章新平),Sun G-L(孙广禄),et al.Variations of stable isotopes characteristics of atmospheric precipitation from Changsha,Hunan.Resources and Environment in the Yangtze Basin(长江流域资源与环境),2012,21(5):540-546(in Chinese)
[19]Huang T-M(黄天明),Nie Z-Q(聂中青),Yuan L-J(袁利娟).Temperature and geographical effects of hydrogen and oxygen isotopes in precipitation in west of China.Journal of Arid Land Resources and Environment(干旱区资源与环境),2008,22(8):76-81(in Chinese)
[20]Zhang X-P(章新平),Yao T-D(姚檀栋),Tian L-D(田立德),et al.Humidity effect and its influence on seasonal distribution ofδ18O in precipitation.Journal of Glaciology and Geocryology(冰川冻土),2004,26(4):420-425(in Chinese)
[21]Liu C-J(刘澄静),Jiao Y-M(角媛梅),Zhang G-L(张贵玲),et al.Altitude effect of hydrogen and oxygen isotopes in spring water of the Malizhai River basin,Hani terrace.Journal of Glaciology and Geocryology(冰川冻土),2016,38(5):1404-1410(in Chinese)
[22]Jiao Y-M(角媛梅),Liu C-J(刘澄静),Liu X(刘歆),et al.Impacts of dominated landscape types on hydrogen and oxygen isotope effects of spring water in the Hani Rice Terraces.Chinese Journal of Applied Ecology(应用生态学报),2017,28(7):2299-2306(in Chinese)
[23]Merlivat L,Jouzel J.Global climatic interpretation of the deuterium-oxygen 18 relationship for precipitation.Journal of Geophysical Research:Oceans,1979,84:5029-5033
[24]Yurtever Y.Worldwide Survey of Stable Isotopes in Precipitation.Vienna:International Atomic Energy Agency,1975
[25]Cheng L-P(程立平),Liu W-Z(刘文兆).Characteristics of stable isotopes in soil water under several typical land use patterns on Loess Tableland.Chinese Journal of Applied Ecology(应用生态学报),2012,23(3):651-658(in Chinese)
[26]Wu H-B(吴红宝),Qin X-B(秦晓波),Lyu C-W(吕成文),et al.Spatial and temporal distribution of dissolved organic carbon in Tuojia River watershed.Journal of Agro-Environment Science(农业环境科学学报),2016,35(10):1968-1976(in Chinese)
[27]Zhou Y(周毅),Wu H-W(吴华武),He B(贺斌),et al.Study on spatial and temporal variations ofδ18O andδD in Yangtze River water and its factors.Resources and Environment in the Yangtze Basin(长江流域资源与环境),2017,26(5):678-686(in Chinese)
[28]Xu Q,Hoke GD,Liu ZJ,et al.Stable isotopes of surface water across the Longmenshan margin of the eastern Tibetan Plateau.Geochemistry,Geophysics,Geosystems,2015,15:3416-3429
[29]Mao W(毛巍),Liang Z-W(梁志伟),Li W(李伟),et al.Research advances in identifying nitrate pollution sources of water environment by using nitrogen and oxygen stable isotopes.Chinese Journal of Applied Ecology(应用生态学报),2013,24(4):1146-1152(in Chinese)
[30]Wu H-B(吴红宝),Lyu C-W(吕成文),Li Y-E(李玉娥),et al.The spatial-temporal distribution of soil and sediment nitrogen and N2O emission in agricultural watershed of Tuojia River.Acta Scientiae Circumstantiae(环境科学学报),2017,37(4):1539-1546(in Chinese)
[31]Zhang X-P(章新平),Yao T-D(姚檀栋).Distribution features ofδ18O in precipitation in China.Acta Geographica Sinica(地理学报),1998,53(4):356-364(in Chinese)
[32]Liu J-D(刘进达),Zhao Y-C(赵迎昌),Liu E-K(刘恩凯),et al.Discussion on the stable isotope timespace distribution law of China atmospheric precipitation.Site Investigation Science and Technology(勘察科学技术),1997(3):34-39(in Chinese)
[33]Wei K-Q(卫克勤),Lin R-F(林瑞芬).The influence of the monsoon climate on the isotopic composition of precipitation in China.Geochimica(地球化学),1994,23(1):32-41(in Chinese)
[34]Wang Y-S(王永森),Ma Z-M(马振民),Xu Z-H(徐征和).Slope of evaporation lines in a model based on Bayleigh fractionation formula.Advances in Water Science(水科学进展),2011,22(6):795-800(in Chinese)
[35]Gu W-Z(顾慰祖).Isotope Hydrogen.Beijing:Science Press,2011(in Chinese)