Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China
文献类型：期刊论文
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| 作者 | An, Jinxia ; Gao, Guangyao; Yuan, Chuan; Pinos, Juan; Fu, Bojie
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| 刊名 | HYDROLOGY AND EARTH SYSTEM SCIENCES
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| 出版日期 | 2022-07-27 |
| 卷号 | 26期号:14页码:3885-3900 |
| 关键词 | WATER STORAGE CAPACITY STEMFLOW PRODUCTION INTERCEPTION LOSS NORTHERN CHINA DESERT SHRUBS THROUGHFALL FOREST VARIABILITY TREE CANOPY |
| ISSN号 | 1027-5606 |
| 英文摘要 | Rainfall is known as the main water replenishment in dryland ecosystems, and rainfall partitioning by vegetation reshapes the spatial and temporal distribution patterns of rainwater entry into the soil. The dynamics of rainfall partitioning have been extensively studied at the interevent scale, yet very few studies have explored its finer intraevent dynamics and the relating driving factors for shrubs. Here, we conducted a concurrent in-depth investigation of all rainfall partitioning components at inter- and intra-event scales for two typical xerophytic shrubs (Caragana korshinskii and Salix psammophila) in the Liudaogou catchment of the Loess Plateau, China. The event throughfall (TF), stemflow (SF), and interception loss (IC), and their temporal variations within the rainfall event, as well as the meteorological factors and vegetation characteristics, were systematically measured during the 2014-2015 rainy seasons. Our results showed that C. korshinskii had significantly higher SF percentage (9.2 %) and lower IC percentage (21.4 %) compared to S. psammophila (3.8 % and 29.5 %, respectively), but their TF percentages were not significantly different (69.4 % vs. 66.7 %). At the intra-event scale, TF and SF of S. psammophila were initiated (0.1 vs. 0.3 h and 0.7 vs. 0.8 h) and peaked (1.8 vs. 2.0 h and 2.1 vs. 2.2 h) more quickly, and TF of S. psammophila lasted longer (5.2 vs. 4.8 h) and delivered more intensely (4.3 vs. 3.8 mm h(-1)), whereas SF of C. korshinskii lasted longer (4.6 vs. 4.1 h) and delivered more intensely (753.8 vs. 471.2 mm h(-1)). For both shrubs, rainfall amount was the most significant factor influencing interevent rainfall partitioning, and rainfall intensity and duration controlled the intra-event TF and SF variables. The C. korshinskii with larger branch angle, more small branches, and smaller canopy area, has an advantage over S. psammophila to produce SF more efficiently. The S. psammophila has lower canopy water storage capacity to generate and peak TF and SF earlier, and it has larger aboveground biomass and total canopy water storage of individual plants to produce higher IC compared to C. korshinskii. These findings contribute to the fine characterization of shrub-dominated eco-hydrological processes, and improve the accuracy of water balance estimation in dryland ecosystems. |
| 源URL | [https://ir.rcees.ac.cn/handle/311016/47289]  |
| 专题 | 生态环境研究中心_城市与区域生态国家重点实验室 |
| 通讯作者 | Gao, Guangyao |
| 作者单位 | 1.Natl Observat & Res Stn Earth Crit Zone Loess Pla, Xian 710061, Peoples R China 2.Zhejiang A&F Univ, State Key Lab Subtrop Silviculture, Hangzhou 311300, Peoples R China 3.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing 100085, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China 5.Inst Environm Assessment & Water Res IDAEA CSIC, Surface Hydrol & Eros Grp, Barcelona 08034, Spain |
| 推荐引用方式 GB/T 7714 | An, Jinxia,Gao, Guangyao,Yuan, Chuan,et al. Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China, Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China.pdf[J]. HYDROLOGY AND EARTH SYSTEM SCIENCES,2022,26(14):3885-3900. |
| APA | An, Jinxia,Gao, Guangyao,Yuan, Chuan,Pinos, Juan,&Fu, Bojie.(2022).Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China.HYDROLOGY AND EARTH SYSTEM SCIENCES,26(14),3885-3900. |
| MLA | An, Jinxia,et al."Inter- and intra-event rainfall partitioning dynamics of two typical xerophytic shrubs in the Loess Plateau of China".HYDROLOGY AND EARTH SYSTEM SCIENCES 26.14(2022):3885-3900. |
入库方式： OAI收割
来源：生态环境研究中心
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