Differences in plant water use between check-dam land and slope land on the Loess Plateau: Significance for vegetation restoration
文献类型：期刊论文
| 作者 | Jia, Xiaoxu; Bai, Xiao2,4; Liu, Chenggong; Zhao, Chunlei; Shao, Ming 'an; Pan, Yanhui3 |
| 刊名 | AGRICULTURE ECOSYSTEMS & ENVIRONMENT
 |
| 出版日期 | 2024-03-01 |
| 卷号 | 362页码:108849 |
| 关键词 | Hillslope Check dam Water resource Plant water use strategy |
| DOI | 10.1016/j.agee.2023.108849 |
| 文献子类 | Article |
| 英文摘要 | Check dam lands (DLs) and hillslope lands (SLs) are two typical landscape units in the semi-arid Loess Plateau of China (CLP). Knowledge of the water resource distribution and water use characteristics of plant species used for revegetation in SL and DL has profound implications for understanding plant-water relations and guiding revegetation strategies in water-limited ecosystems. To assess the spatiotemporal characteristics of water resource and investigate water use strategies of two widely used species for revegetation (i.e., Medicago sativa and Caragana korshinskii) in the SL and DL, numerous types of water samples (including rain-, soil-, plant-, and groundwater) were collected from a watershed in the semi-arid CLP for analysis. The oxygen and hydrogen stable isotopic ratios (delta O-18 and delta D) of the water samples were estimated for three consecutive hydrological years (2018-2020). The soil water storage in the unsaturated zone of 0-600 cm in the DL (mean 1008 mm) was estimated to be 64% higher than that in the SL (mean 613 mm). Below 600 cm, soil was saturated with water (i.e. groundwater) in the DL and remained unsaturated in the SL. The Bayesian mixing model was applied to the stable isotopic ratios of H and O, which revealed significant differences (p < 0.05) in the proportional contributions of water resources between the two revegetated species. Although M. sativa (mean 76% for SL and 61% for DL) and C. korshinskii (mean 72% for SL and 47% for DL) relied on water from the upper 100-cm soil layer during the observation period, C. korshinskii generally utilised more water from the deep soil layer (>100 cm) than M. sativa. Furthermore, the mean water uptake fractions of C. korshinskii in both the SL and DL for the deep soil layers and groundwater significantly increased with decreasing annual rainfall, whereas this was not observed for M. sativa, suggesting that the environmental adaptability of C. korshinskii may be more ecologically plastic than that of M. sativa. Additionally, the contribution of groundwater (>600 cm) to root water uptake in M. sativa (mean, 21%) and C. korshinskii (mean, 28%) was comparable in the DL, indicating the importance of groundwater in combating possible water stress for revegetated plants. These results indicate that natural and engineering measure-induced water resource distributions result in different plant water-use characteristics and responses to variations in precipitation. Therefore, engineering measures and species are essential factors in ecological restoration management for enhancing the effectiveness of vegetation restoration strategies. |
| WOS关键词 | SEMIARID REGION ; STABLE-ISOTOPES ; SURFACE SOIL ; CHINA ; AREA ; PRECIPITATION ; REVEGETATION ; CATCHMENT ; DYNAMICS ; SERVICES |
| WOS研究方向 | Agriculture ; Environmental Sciences & Ecology |
| WOS记录号 | WOS:001141231400001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/201559]  |
| 专题 | 生态系统网络观测与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Xian Univ Sci & Technol, Coll Geomat, 58 Yanta Rd, Xian 710054, Peoples R China 2.Lanzhou Univ, Key Lab Western Chinas Environm Syst, Minist Educ, Lanzhou 730000, Peoples R China 3.Xian Univ Sci & Technol, Coll Geomat, Xian 710054, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Key Lab Ecosyst Network Observat & Modeling, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jia, Xiaoxu,Bai, Xiao,Liu, Chenggong,et al. Differences in plant water use between check-dam land and slope land on the Loess Plateau: Significance for vegetation restoration[J]. AGRICULTURE ECOSYSTEMS & ENVIRONMENT,2024,362:108849. |
| APA | Jia, Xiaoxu,Bai, Xiao,Liu, Chenggong,Zhao, Chunlei,Shao, Ming 'an,&Pan, Yanhui.(2024).Differences in plant water use between check-dam land and slope land on the Loess Plateau: Significance for vegetation restoration.AGRICULTURE ECOSYSTEMS & ENVIRONMENT,362,108849. |
| MLA | Jia, Xiaoxu,et al."Differences in plant water use between check-dam land and slope land on the Loess Plateau: Significance for vegetation restoration".AGRICULTURE ECOSYSTEMS & ENVIRONMENT 362(2024):108849. |
入库方式： OAI收割
来源：地理科学与资源研究所
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