Study on the Relationship between Precipitation and RiverWater at BalangMountainWatershed inWolong Nature Reserve of Sichuan Province
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1.
Inst itu te ofForest Eco logy, Environment and Protect ion, CAF, K ey Laboratory of Forest Ecology and Environmen ,t S tate ForestryAdmin istrat ion, Beijing?? 100091, Ch ina
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Laboratory of Forest Ecology and Global Changes, Schoo l ofL ife Scien ce, Nan j ing Un iversity,Nan j ing?? 210093, J iangsu, Ch in a
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3.
Col lege ofG eograph ic S cien ce, Sou thwes tUn iversity, Chongq ing?? 400715, Ch ina
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Received Date:
2006-12-15
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Abstract
The authors investigated hydrogen and oxygen stab le iso tope ( δD and δ18O ) ofw ater in Pit iao R iver, and compared them w ith the δD and δ18O of precipitation atWolong Nature Reserve o f Sichuan Prov ince to explore the relation-ship betw een riverw ater δD and δ18O. Itw as found that thewater δD w as positively correlated w ith water δ18O, name ly,δD = 3. 888 -18O - 45. 614 ( R2 = 0. 494, p 18O and δD in the riverwaterweremuchsam ller than those in the precipitation. The excess deuterium ( d) in the river water and in the precipitat ion show ed avery smi ilar patterns o f the seasonal variat ion, w ith the h igher values in w inter than in summer. Snow and snow-icemelting w ater discharg ing into the river variedw ith seasons and th is process occurredmainly from November to nex t June. Theresponse tmi es of δ18O and δD in the riverw ater to precipitation depended on the intensity of prec ipitation. G iven the intensities of precipitation at 0~ 10mm, 10~ 20 mm and 20~ 30 mm, the response tmi es o f δD and δ18O in the river w aterw ere 3 d, 2 d, and 1~ 2 d, respectively, after the occurrence of prec ipitat ion. This suggested thatw ell-structuredsub-a lpine dark brown coniferous forests could mi prove rain w ater permeab ility into so il and facilitatew atermovement intothe adjacent rivers, byw hich the forest regulated the run-off process and w ater discharge into the river.
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References
|
[1]
|
尹观. 同位素水文地球化学[M] . 成都: 成都科技大学出版社,1988: 166~ 183
|
|
[2]
|
C raigH, Gordon L I, H oribe Y. Isotopic exchange effects in the evaporat ion ofw ater [J]. J GeophysR es, 1963, 68: 5 079 ~ 5 087 |
|
[3]
|
Lamb sL. In teractions betw een groundw ater and surfacew ater at riverbanks and the con fluence of river [J] . Jou rnal ofH ydrology, 2004,288 ( 3~ 4) : 312~ 326 |
|
[4]
|
C lay A, B rad ley C, G errard, A J, e ta l. U sing s tab le isotopes ofw ater to inferw et land hydro log ical dyn am ics [J] . H yd rology and E arthSystem Sciences, 2004, 18: ( 6 ) : 1 164 ~ 1 173 |
|
[5]
|
A ravena R, Suzuk iO. Istop ic evolut ion of riverw ater in the NorthernCh ile region [J]. W ater Resour Res, 1990, 26( 12) : 1 887~ 1 895 |
|
[6]
|
程汝楠. 应用天然同位素示踪水量转换[A] . 见: 刘昌明, 任鸿遵. 水量转换——实验与计算分析[M] . 北京: 科学出版社,1988: 33~ 50
|
|
[7]
|
尹观, 范晓, 郭建强, 等. 四川九寨沟水循环系统的同位素示踪[J] . 地理学报, 2000, 55( 4 ): 487 ~ 494
|
|
[8]
|
田立德, 姚檀栋, 孙维贞. 青藏高原那曲河流域降水及河流水体中氧稳定同位素研究[J]. 水科学进展, 2002, 13( 2) : 206~ 210
|
|
[9]
|
林光辉, 柯渊. 稳定同位素技术与全球变化研究[A] . 见: 李博.现代生态学讲座[M] . 北京: 科学出版社, 1995: 161 ~ 188
|
|
[10]
|
石辉, 刘世荣, 赵晓广. 稳定性氢氧同位素在水分循环中的应用[J] . 水土保持学报, 2003, 17( 2 ) : 163~ 166
|
|
[11]
|
徐庆, 安树青, 刘世荣, 等. 四川卧龙亚高山暗针叶林降水分配过程的氢稳定同位素特征[J] . 林业科学, 2005, 41( 4 ) : 7~ 12
|
|
[12]
|
徐庆, 刘世荣, 安树青, 等. 川西亚高山暗针叶林降水分配过程中氧稳定同位素特征[J] . 植物生态学报, 2006, 30( 1 ) : 83~ 89
|
|
[13]
|
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
|
|
[14]
|
徐庆, 刘世荣, 安树青, 等. 四川卧龙亚高山暗针叶林土壤水的氢稳定同位素特征[J] . 林业科学, 2007, 43 ( 1) : 8 ~ 14
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Proportional views
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