Seasonal Variations in Water Use Strategies in a Karst Region
文献类型：期刊论文
| 作者 | Mu, Yating2,3; Xiong, Kangning2,3; Liu, Ziqi2,3; Liu, Guohua1; Cai, Lulu2,3,4 |
| 刊名 | HYDROLOGICAL PROCESSES
 |
| 出版日期 | 2026-01-02 |
| 卷号 | 40期号:1页码:e70371 |
| 关键词 | groundwater dependent ecosystems MixSIAR model stable isotopes water resources management water uptake pattern water use efficiency |
| ISSN号 | 0885-6087 |
| DOI | 10.1002/hyp.70371 |
| 产权排序 | 4 |
| 文献子类 | Article |
| 英文摘要 | Karst regions exhibit heterogeneous water distribution attributable to their unique topographical features. Research concerning water absorption, efficiency dynamics and the underlying mechanisms within commercial plantation forests remains limited, which constrains our understanding of ecohydrological processes. In this study, three typical commercial forests (Juglans regia, Prunus salicina and Prunus persica) were selected as research subjects. We investigated seasonal variations in water uptake patterns and water use efficiency (WUE) of each species by combining stable isotopes (delta H-2, delta O-18 and delta C-13) with the MixSIAR model. We hypothesise that these forests adjust their water absorption depth in response to seasonal variations in water availability, consequently influencing WUE. Our results showed that the most important water source for J. regia and P. salicina was 0-30 cm soil water, contributing 55% and 41.6%, respectively. Groundwater provided the next highest contributions, at 25.2% and 30.6%, respectively. In contrast, P. persica mainly used groundwater in spring and autumn (51.2% and 42.3%), 30-60 cm soil water and 0-30 cm soil water in summer (39.5% and 39.1%). Groundwater is an indispensable water source for commercial forests, with a minimum use proportion of 18.8% in summer and a maximum that can reach 51.2% in spring, highlighting the 'stabiliser' role groundwater provides during seasonal droughts in karst areas. The WUE of P. persica is significantly higher than that of J. regia during the spring and autumn seasons (p < 0.05). These results suggest groundwater is a crucial water source for commercial forests in humid subtropical zones, and vegetation with a greater dependence on groundwater exhibits a higher WUE. This study elucidates the ecological strategies employed by subtropical karst commercial forests to adapt to variations in soil moisture by flexibly adjusting their water absorption depth. The findings provide a scientific basis for the rational allocation of water resources within commercial forests in this region. |
| URL标识 | 查看原文 |
| WOS关键词 | STABLE-ISOTOPES ; NICHE SEGREGATION ; DOLOMITE OUTCROPS ; UPTAKE PATTERNS ; PLANT ; DROUGHT ; RESPONSES ; DEPTH |
| WOS研究方向 | Water Resources |
| 语种 | 英语 |
| WOS记录号 | WOS:001653398800001 |
| 出版者 | WILEY |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/219641]  |
| 专题 | 资源利用与环境修复重点实验室_外文论文 |
| 通讯作者 | Xiong, Kangning; Liu, Ziqi |
| 作者单位 | 1.Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Urban & Reg Ecol, Beijing, Peoples R China; 2.Guizhou Normal Univ, Sch Karst Sci, Guiyang, Peoples R China; 3.State Engn Technol Inst Karst Desertificat Control, Guiyang, Peoples R China; 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Mu, Yating,Xiong, Kangning,Liu, Ziqi,et al. Seasonal Variations in Water Use Strategies in a Karst Region[J]. HYDROLOGICAL PROCESSES,2026,40(1):e70371. |
| APA | Mu, Yating,Xiong, Kangning,Liu, Ziqi,Liu, Guohua,&Cai, Lulu.(2026).Seasonal Variations in Water Use Strategies in a Karst Region.HYDROLOGICAL PROCESSES,40(1),e70371. |
| MLA | Mu, Yating,et al."Seasonal Variations in Water Use Strategies in a Karst Region".HYDROLOGICAL PROCESSES 40.1(2026):e70371. |
入库方式： OAI收割
来源：地理科学与资源研究所
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