Contrasting adaptive strategies by Caragana korshinskii and Salix psammophila in a semiarid revegetated ecosystem
文献类型：期刊论文
| 作者 | Zhao, Ying1,3; Wang, Li1,2; Knighton, James4; Evaristo, Jaivime2,5; Wassen, Martin5 |
| 刊名 | AGRICULTURAL AND FOREST METEOROLOGY
 |
| 出版日期 | 2021-04-15 |
| 卷号 | 300页码:13 |
| 关键词 | Loess plateau Water-use strategy O-18 and D Iso/anisohydric behaviour Leaf water potential Foliar delta C-13 |
| ISSN号 | 0168-1923 |
| DOI | 10.1016/j.agrformet.2021.108323 |
| 通讯作者 | Wang, Li(wangli5208@nwsuaf.edu.cn) |
| 英文摘要 | Salix psammophila and Caragana korshinskii are pioneer species used for revegetating farmlands on the Loess Plateau. Understanding the water-use strategies and physiological characteristics of these two species are important for evaluating their adaptability in water-limited ecosystems. We used stable isotopes (D and O-18), physiological parameters (e.g. midday and predawn leaf water potential and stomatal conductance (psi(md), psi(pd) and g(s), respectively)) and foliar delta C-13 to analyse water sources, isohydric/anisohydric behaviour, and water-use efficiency (WUE), respectively, of these two shrub species. Our results show that S. psammophila relied on water (mean 60%) from the intermediate soil layer (30-80 cm from the surface) during the dry period (May and June), while C. korshinskii relied on water from the deep soil layer (80-100 cm) (mean 52%). Both species shifted to using water from the shallow layer (0-30 cm) during the wet period (July and August) (mean 61% for S. psammophila and 51% for C. korshinskii). These root water uptake patterns are consistent with C. korshinskii's physiological performance, which in turn is consistent with a description that C. korshinskii is an anisohydric species as evidenced by a steeper slope of the relationship between psi(md) and psi(pd) (sigma, 1.88), and a larger difference between psi(md) and psi(pd) (Delta psi, -1.66 +/- 0.10 MPa). In contrast, S. psammophila could be described as an isohydric species (0.82 for s and -0.77 +/- 0.02 MPa for Delta psi). Surprisingly, despite being anisohydric, C. korshinski showed greater long-term WUE than isohydric S. psammophila, particularly during the dry season. Insofar as water availability is concerned, these results show that the environmental adaptability of C. korshinskii may generally be more ecologically plastic than that of S. psammophila. Our study serves as a reference for evaluating the persistence of shrub species in relation to the management and restoration of ecosystems. |
| 资助项目 | National Natural Science Foundation of China[41771545] ; National Natural Science Foundation of China[41977012] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB40000000] ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS[SKLLQG1718] |
| WOS研究方向 | Agriculture ; Forestry ; Meteorology & Atmospheric Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000635674500012 |
| 出版者 | ELSEVIER |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; State Key Laboratory of Loess and Quaternary Geology, Institute of Earth Environment, CAS |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/161890]  |
| 专题 | 中国科学院地理科学与资源研究所 |
| 通讯作者 | Wang, Li |
| 作者单位 | 1.Chinese Acad Sci & Minist Water Resources, Inst Soil & Water Conservat, State Key Lab Soil Eros & Dryland Farming Loess P, Yangling 712100, Shaanxi, Peoples R China 2.Northwest A&F Univ, Coll Nat Resources & Environm, Yangling 712100, Shaanxi, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Connecticut, Dept Nat Resources & Environm, Storrs, CT USA 5.Univ Utrecht, Copernicus Inst Sustainable Dev, Utrecht, Netherlands |
| 推荐引用方式 GB/T 7714 | Zhao, Ying,Wang, Li,Knighton, James,et al. Contrasting adaptive strategies by Caragana korshinskii and Salix psammophila in a semiarid revegetated ecosystem[J]. AGRICULTURAL AND FOREST METEOROLOGY,2021,300:13. |
| APA | Zhao, Ying,Wang, Li,Knighton, James,Evaristo, Jaivime,&Wassen, Martin.(2021).Contrasting adaptive strategies by Caragana korshinskii and Salix psammophila in a semiarid revegetated ecosystem.AGRICULTURAL AND FOREST METEOROLOGY,300,13. |
| MLA | Zhao, Ying,et al."Contrasting adaptive strategies by Caragana korshinskii and Salix psammophila in a semiarid revegetated ecosystem".AGRICULTURAL AND FOREST METEOROLOGY 300(2021):13. |
入库方式： OAI收割
来源：地理科学与资源研究所
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