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| DOI | 10.1016/j.rhisph.2021.100451 |
| Root-induced alterations in soil hydrothermal properties in alpine meadows of the Qinghai-Tibet Plateau | |
| Su, Youqi; Zhang, Yu; Shang, Lunyu; Wang, Shaoying; Hu, Guojie; Song, Minhong; Zhou, Ke | |
| 通讯作者 | Zhang, Y (通讯作者)，Chengdu Univ Informat Technol, Sch Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Peoples R China. |
| 发表日期 | 2021 |
| EISSN | 2452-2198 |
| 卷号 | 20 |
| 英文摘要 | By altering the physical properties of soil through root activity, plants can act as important agents in affecting soil hydrothermal properties. However, we still know little about how plant roots regulate these properties in certain ecosystems, such as alpine meadows. Thus, we studied the influence of roots on soil hydrothermal properties in the Qinghai-Tibet Plateau (QTP). Root biomass as well as soil physicochemical and hydrothermal properties were examined at a depth of 0-30 cm at three study sites in the QTP. The relationship between root biomass and saturated soil hydraulic conductivity (K-s) was examined, as was the applicability of common soil hydrothermal properties models to the alpine meadow system. Results revealed that approximately 91.10%, 72.52%, and 76.84% of root biomass was located in the top 0-10 cm of soil at Maqu, Arou, and Naqu, respectively. Compared with the bulk soil, the water-holding capacity of rhizosphere soil was enhanced by 20%-50%, while K-s was decreased by at least 2- to 3-fold. The thermal conductivity (lambda) of rhizosphere soils was lower than that of the bulk soil by 0.23-0.82 W m(-1).K-1 on average. Lastly, soil hydrothermal properties models that do not explicitly consider root effects overestimated the Ks and lambda in the rhizosphere soil of these systems. Overall, our results revealed distinctive differences in soil hydrothermal properties between the rhizosphere soil and the bulk soil in the QTP. This research has important implications for future modeling of soil hydrothermal processes of alpine meadow soils. |
| 关键词 | HYDRAULIC CONDUCTIVITYTHERMAL-CONDUCTIVITYPHYSICAL-PROPERTIESWATER INFILTRATIONEVAPORATION METHODORGANIC-MATTERPLANT-ROOTSRHIZOSPHEREMOISTUREPOROSITY |
| 英文关键词 | Alpine meadow; Root biomass; Soil water retention curve; Soil hydraulic conductivity; Soil thermal conductivity |
| 语种 | 英语 |
| WOS研究方向 | Agriculture ; Plant Sciences |
| WOS类目 | Agronomy ; Plant Sciences ; Soil Science |
| WOS记录号 | WOS:000715385200001 |
| 来源期刊 | RHIZOSPHERE
 |
| 来源机构 | 中国科学院西北生态环境资源研究院 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/254728 |
| 作者单位 | [Su, Youqi; Shang, Lunyu; Wang, Shaoying] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; [Su, Youqi] Univ Chinese Acad Sci, Beijing 100049, Peoples R China; [Zhang, Yu; Song, Minhong; Zhou, Ke] Chengdu Univ Informat Technol, Sch Atmospher Sci, Plateau Atmosphere & Environm Key Lab Sichuan Pro, Chengdu 610225, Peoples R China; [Hu, Guojie] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Peoples R China; [Shang, Lunyu; Wang, Shaoying; Hu, Guojie] Donggang West Rd 320, Lanzhou, Gansu, Peoples R China; [Zhang, Yu; Song, Minhong; Zhou, Ke] 24 Block 1,Xuefu Rd, Chengdu, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Su, Youqi,Zhang, Yu,Shang, Lunyu,et al. Root-induced alterations in soil hydrothermal properties in alpine meadows of the Qinghai-Tibet Plateau[J]. 中国科学院西北生态环境资源研究院,2021,20. |
| APA | Su, Youqi.,Zhang, Yu.,Shang, Lunyu.,Wang, Shaoying.,Hu, Guojie.,...&Zhou, Ke.(2021).Root-induced alterations in soil hydrothermal properties in alpine meadows of the Qinghai-Tibet Plateau.RHIZOSPHERE,20. |
| MLA | Su, Youqi,et al."Root-induced alterations in soil hydrothermal properties in alpine meadows of the Qinghai-Tibet Plateau".RHIZOSPHERE 20(2021). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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