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| Variations of soil water isotopes and effective contribution times of precipitation and throughfall to alpine soil water, in Wolong Nature Reserve, China | |
| Liu, Yuhong1,5,6; Liu, Fude2; Xu, Zhen3; Zhang, Jianping4; Wang, Lixin5; An, Shuqing6; Wang, LX (reprint author), Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China. yu_hong_liu@263.net; lx_wimu@163.com | |
| 发表期刊 | CATENA
 |
| ISSN | 0341-8162 |
| 2015-03-01 | |
| 卷号 | 126页码:201-208 |
| 关键词 | Alpine Shrubland Interflow Rainy Season Stable Hydrogen Isotope Stable Oxygen Isotope |
| DOI | 10.1016/j.catena.2014.11.008 |
| 产权排序 | [Liu, Yuhong] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Liu, Fude] Tianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China; [Xu, Zhen] State Power Environm Protect Res Inst, Nanjing 210031, Jiangsu, Peoples R China; [Zhang, Jianping] Chongqing Inst Meteorol Sci, Chongqing 401147, Peoples R China; [Liu, Yuhong; Wang, Lixin] Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China; [Liu, Yuhong; An, Shuqing] Nanjing Univ, Sch Life Sci, Lab Forest Ecol & Global Changes, Nanjing 210093, Jiangsu, Peoples R China |
| 作者部门 | 中科院海岸带环境过程与生态修复重点实验室 |
| 英文摘要 | Alpine shrubs and soils in catchments of the headwaters of the Yangtze River in west China are very important for reducing flooding and sustaining base flow during the summer. However, the contributions of precipitation, throughfall, and interflow to soil water and their effective contribution times in alpine shrub soil are not fully understood. In this study, we investigated a time series of stable isotopes in soil water, precipitation, canopy throughfall, interflow, litter, and humus water in a hillslope area. In addition, the spatial variation of water isotopes in soil profile in the Wolong Valley, located in the upper watershed of the Yangtze River, Sichuan, China, was considered. We found that (1) precipitation and throughfall significantly affected water isotopes in litter, humus, and shallow soil (0 cm to 50 cm deep) by affecting preferential flows. (2) Rainwater from a small precipitation event (about 4.0 mm d(-1)) also penetrated soil to depths of 40 cm to 50 cm. (3) Interflow could comprise as much as 96% of water in soil columns during non-rainy days, but the proportion would decrease quickly after the precipitation amount reached more than 3 mm d(-1). (4) Mean effective contribution times of recharge in soil (0 cm to 50 cm deep) occurred 3 to 5 days despite the occurrence of large precipitation events (15.0 mm and 18.9 mm). Therefore, preferential flows composed of precipitation/throughfall and interflow were dominant in hillslope hydrology in the southeast edge of Tibet, which caused runoff to increase during the rainy season. (C) 2014 Elsevier B.V. All rights reserved.; Alpine shrubs and soils in catchments of the headwaters of the Yangtze River in west China are very important for reducing flooding and sustaining base flow during the summer. However, the contributions of precipitation, throughfall, and interflow to soil water and their effective contribution times in alpine shrub soil are not fully understood. In this study, we investigated a time series of stable isotopes in soil water, precipitation, canopy throughfall, interflow, litter, and humus water in a hillslope area. In addition, the spatial variation of water isotopes in soil profile in the Wolong Valley, located in the upper watershed of the Yangtze River, Sichuan, China, was considered. We found that (1) precipitation and throughfall significantly affected water isotopes in litter, humus, and shallow soil (0 cm to 50 cm deep) by affecting preferential flows. (2) Rainwater from a small precipitation event (about 4.0 mm d(-1)) also penetrated soil to depths of 40 cm to 50 cm. (3) Interflow could comprise as much as 96% of water in soil columns during non-rainy days, but the proportion would decrease quickly after the precipitation amount reached more than 3 mm d(-1). (4) Mean effective contribution times of recharge in soil (0 cm to 50 cm deep) occurred 3 to 5 days despite the occurrence of large precipitation events (15.0 mm and 18.9 mm). Therefore, preferential flows composed of precipitation/throughfall and interflow were dominant in hillslope hydrology in the southeast edge of Tibet, which caused runoff to increase during the rainy season. (C) 2014 Elsevier B.V. All rights reserved. |
| 文章类型 | Article |
| 资助机构 | Geology ; Agriculture ; Water Resources |
| 收录类别 | SCI |
| 语种 | 英语 |
| 关键词[WOS] | MEAN RESIDENCE TIME ; PREFERENTIAL FLOW ; STABLE-ISOTOPES ; SOLUTE TRANSPORT ; GROUNDWATER SYSTEM ; MACROPORE FLOW ; HILLSLOPE ; CATCHMENTS ; HYDROLOGY ; RECHARGE |
| 研究领域[WOS] | Geology ; Agriculture ; Water Resources |
| WOS记录号 | WOS:000348956700023 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.yic.ac.cn/handle/133337/8650 |
| 专题 | 中国科学院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Wang, LX (reprint author), Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China. yu_hong_liu@263.net; lx_wimu@163.com |
| 作者单位 | 1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China 2.Tianjin Univ Technol, Sch Environm Sci & Safety Engn, Tianjin 300384, Peoples R China 3.State Power Environm Protect Res Inst, Nanjing 210031, Jiangsu, Peoples R China 4.Chongqing Inst Meteorol Sci, Chongqing 401147, Peoples R China 5.Inner Mongolia Univ, Coll Environm & Resources, Hohhot 010021, Peoples R China 6.Nanjing Univ, Sch Life Sci, Lab Forest Ecol & Global Changes, Nanjing 210093, Jiangsu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Yuhong,Liu, Fude,Xu, Zhen,et al. Variations of soil water isotopes and effective contribution times of precipitation and throughfall to alpine soil water, in Wolong Nature Reserve, China[J]. CATENA,2015,126:201-208. |
| APA | Liu, Yuhong.,Liu, Fude.,Xu, Zhen.,Zhang, Jianping.,Wang, Lixin.,...&lx_wimu@163.com.(2015).Variations of soil water isotopes and effective contribution times of precipitation and throughfall to alpine soil water, in Wolong Nature Reserve, China.CATENA,126,201-208. |
| MLA | Liu, Yuhong,et al."Variations of soil water isotopes and effective contribution times of precipitation and throughfall to alpine soil water, in Wolong Nature Reserve, China".CATENA 126(2015):201-208. |
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