seeKSpace >
黑河流域研究 >
黑河流域相关文献 >
Please use this identifier to cite or link to this item:
http://hdl.handle.net/2239/24087
|
| Title: | 黑河流域中上游地区降水δ^18O 变化特征 |
| Other Titles: | Characteristics of the δ^18O in Precipitation in the Upper and Middle Reaches of Heihe River |
| Authors: | ZHANG Ying-hua(张应华)
WU Yan-qing(仵彦卿) |
| Keywords: | 黑河
降水
δ^18O
同位素
Heihe River
precipitation
δ^18O
isotope |
| Issue Date: | 16-Oct-2007 |
| Abstract: | 水资源短缺和合理利用是黑河流域面临的一个严峻问题, 解决问题的关键就是要深入了解水循环过程. 降水作为水循环中一个重要环节, 分析其环境同位素变化特征是应用同位素示踪技术研究水循环过程所必须的前提. 根据黑河流域中上游地区取得的降水水样和降水气象资料, 分析了该区域降水中δ^18O的变化特征. 结果表明： 降水 δ^18O 受降水量、 季节、 高度和温度等众多因素综合影响, 其中温度占主导地位； 由于位于干旱内陆地区, 降水中δ^18O的季节变化幅度较大, 可达20‰以上； 降水 δ^18O 与降水前后平均气温的相关性显著, 分别高于 δ^18O 与降水前气温或降水后气温的相关性. 从空间上来看, 山区或上游地区降水δ^18O与气温之间的相关性显著, 分别高于δ^18O与山前或山前盆地的相关性.[著者文摘]
The Heihe River, one of the long inland rivers in China, was confronted with water resources＇ scarceness owing to unreasonable development and utilization. To utilize effectively the limited water resources, isotope techniques was widely used to study hydrologic cycle. First of all, the characteristics of isotope in precipitation must be known. The relationships of δ^18O in precipitation with precipitation, altitude, season and temperature are respectively discussed based on the study at some precipitation sampling sites in the middle basin and mountain areas of the Heihe River. It is found that δ^18O depends on precipitation, altitude, season and temperature, and temperature is the most important factor. The dependence can be described by a multivariate linear regression equation. The fluctuation range of δ^18O is very wide from season to season, more than 20%0. There is a better linear relation between δ^18O in precipitation and temperature in mountain areas. The relationship between δ^18O in precipitation and average temperature is better than that between δ^18O in precipitation and the temperature before or after precipitation.[著者文摘] |
| URI: | http://seekspace.resip.ac.cn/handle/2239/24087 |
| ISSN: | 1000-0240 |
| Appears in Collections: | 黑河流域相关文献
|
Files in This Item:
| File |
Size | Format |
|---|
| File_00002.pdf | 343Kb | Adobe PDF | View/Open |
|
All items in DSpace are protected by copyright, with all rights reserved.
|
