ISWC OpenIR  > 水保所知识产出(1956---)
黄土高原丘陵沟壑区流域不同水体氢氧同位素特征 ———以纸坊沟流域为例
王贺1; 李占斌2; 马波1; 马建业1; 张乐涛2
2016
Source Publication水土保持学报
Volume30Issue:4Pages:85-90
Abstract

为系统、全面地研究黄土高原丘陵沟壑区流域降水、地表水、土壤水的氢氧同位素特征,以纸坊沟流
域为研究对象,通过测定流域范围内2015年3—9月降水、地表水、刺槐林土壤水和荒草地土壤水的氢氧
同位素组成,分析了各水体氢氧同位素的δD-δ18 O关系和季节变化特征,阐明了土层深度、植被类型、坡
向和坡位等下垫面因素对土壤水氢氧同位素的影响。结果表明:该流域当地大气降水线方程为δD=6.71
δ18 O-3.22(n=18,R2=0.96),地表水的蒸发线方程为δD=6.77δ18 O-5.32(n=13,R2=0.72),土壤水的
蒸发线方程为δD=3.50δ18 O-34.00(n=756,R2=0.76);各水体δ18 O富集程度为:刺槐林土壤水≈荒草
地土壤水>降水>地表水。降水与土壤水(刺槐林和荒草地)δ18 O季节效应明显,浅层50cm土壤水的平
均传输时间约为1个月;地表水δ18 O变幅较小、组成均一、季节效应不明显,推断其为多次历史降水混合形
成;4种下垫面因素对浅层50cm土壤水氢氧同位素影响程度为:土层深度>坡向>植被类型>坡位。其
中,土层深度对浅层土壤水δ18 O影响达到极显著水平。不同土层间土壤水δ18 O差异性随土层深度差值的
增大而增大,且深度差超过15cm后呈极显著差异,推断纸坊沟流域地表15cm土层为受降水和蒸发影响
的土壤水分活跃区。

Other Abstract

In order to study the characteristics of hydrogen and oxygen isotopes in precipitation,surface water
and soil water of the loess hilly and gully region systematically,the Zhifanggou watershed,which is located
in Ansai County,Yan’an City of Shaanxi Province,was selected to be the research object.Precipitation
samples,surface water samples and soil samples in locust forest and waste grassland were collected from
March to September of 2015to test the compositions of the hydrogen and oxygen isotopes.By analyzing the
seasonal variations of hydrogen and oxygen isotopes and the relationships betweenδD andδ18 O in the precipitation,
surface water and soil water of Zhifanggou watershed and their seasonal changes,the effects of soil depth,
vegetation type,and slope direction and position on characteristics of hydrogen and oxygen isotopes in soil
water were explored.The results showed that the local meteoric water line equation wasδD=6.71δ18 O-
3.22(n=18,R2=0.96),the evaporation line equation of the surface water wasδD=6.77δ18 O-5.32(n=
13,R2=0.72),and the evaporation line equation of the soil water wasδD=3.50δ18 O-34.00(n=756,R2=
0.76).δ18 O in different water listed in the order of soil water(locust forest)≈soil water(waste grassland)>
precipitation>surface water.The seasonal variations ofδ18 O in precipitation and soil water were obvious,
while that in the surface water was not obvious with small variable amplitude and stable composition.It can
be concluded that the average transmission time of soil water in the 0—50cm soil layer was about a month,and the surface water came from a blend of multiple historical precipitations.Finally,the influence degrees of
underlying surface factors(soil depth,vegetation type,slope direction and position)on the hydrogen and
oxygen isotopes in soil water were calculated,which listed in the order of soil depth>slope direction>vegetation
type>slope position.The influence of soil depth onδ18 O was extremely significant in the surface layer,and the
difference ofδ18 O between different layers increased with the difference of soil depth.The difference ofδ18 O tended to
be very significant when the difference of soil depth was greater than 15cm.Therefore,the 0-15cm soil layer was
the active zone of soil moisture,which was mainly caused by precipitation and soil moisture evaporation.

Keyword黄土高原 纸坊沟 氢氧同位素 降水 地表水 土壤水
Indexed By中文核心期刊要目总览
Language中文
Document Type期刊论文
Identifierhttp://ir.iswc.ac.cn/handle/361005/8579
Collection水保所知识产出(1956---)
Affiliation1.西北农林科技大学水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
2.中国科学院水利部水土保持研究所黄土高原土壤侵蚀与旱地农业国家重点实验室
Recommended Citation
GB/T 7714
王贺,李占斌,马波,等. 黄土高原丘陵沟壑区流域不同水体氢氧同位素特征 ———以纸坊沟流域为例[J]. 水土保持学报,2016,30(4):85-90.
APA 王贺,李占斌,马波,马建业,&张乐涛.(2016).黄土高原丘陵沟壑区流域不同水体氢氧同位素特征 ———以纸坊沟流域为例.水土保持学报,30(4),85-90.
MLA 王贺,et al."黄土高原丘陵沟壑区流域不同水体氢氧同位素特征 ———以纸坊沟流域为例".水土保持学报 30.4(2016):85-90.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[王贺]'s Articles
[李占斌]'s Articles
[马波]'s Articles
Baidu academic
Similar articles in Baidu academic
[王贺]'s Articles
[李占斌]'s Articles
[马波]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[王贺]'s Articles
[李占斌]'s Articles
[马波]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.