Impact of a thermokarst lake on the soil hydrological properties in permafrost regions of the Qinghai-Tibet Plateau, China
文献类型：期刊论文
| 作者 | Gao, Zeyong1,2,3; Niu, Fujun1; Wang, Yibo3; Luo, Jing1; Lin, Zhanju1 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2017 |
| 卷号 | 574页码:751-759 |
| 关键词 | Thermokarst lake Hydrological properties Alpine soil Qinghai-Tibet Plateau Alpine meadow ecosystems |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2016.09.108 |
| 通讯作者 | Niu, Fujun(niufujun@lzb.ac.cn) |
| 英文摘要 | The formation of thermokarst lakes can degrade alpine meadow ecosystems through changes in soil water and heat properties, which might have an effect on the regional surface water and groundwater processes. In this study, a typical thermokarst lake was selected in the Qinghai-Tibet Plateau (QTP), and the ecological index (S-L) was used to divide the affected areas into extremely affected, severely affected, medium-affected, lightly affected, and non-affected areas, and soil hydrological properties, including saturated hydraulic conductivity and soil water-holding capacity, were investigated. The results showed that the formation of a thermokarst lake can lead to the degradation of alpine meadows, accompanied by a change in the soil physiochemical and hydrological properties. Specifically, the soil structure turned towards loose soil and the soil nutrients decreased from non-affected areas to severely affected areas, but the soil organic matter and available potassium increased slightly in the extremely affected areas. Soil saturated hydraulic conductivity showed a 1.7- to 4.1-fold increase in the lake-surrounding areas, and the highest value (401.9 cm d(-1)) was detected in the severely affected area. Soil water-holding capacity decreased gradually during the transition from the non-affected areas to the severely affected areas, but it increased slightly in the extremely affected areas. The principal component analysis showed that the plant biomass was vital to the changes in soil hydrological properties. Thus, the vegetation might serve as a link between the thermokarst lake and soil hydrological properties. In this particular case, it was concluded that the thermokarst lake adversely affected the regional hydrological services in the alpine ecosystem. These results would be useful for describing appropriate hydraulic parameters with the purpose of modeling soil water transportation more accurately in the Qinghai-Tibet Plateau. (C) 2016 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | SATURATED HYDRAULIC CONDUCTIVITY ; GUELPH PERMEAMETER METHOD ; THERMAL REGIME ; INFILTRATION PARAMETERS ; ALPINE ECOSYSTEM ; QILIAN MOUNTAINS ; CARBON POOL ; THAW SLUMP ; VEGETATION ; DEGRADATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000389090100072 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2557522 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Niu, Fujun |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, State Key Lab Frozen Soil Engn, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Gao, Zeyong,Niu, Fujun,Wang, Yibo,et al. Impact of a thermokarst lake on the soil hydrological properties in permafrost regions of the Qinghai-Tibet Plateau, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2017,574:751-759. |
| APA | Gao, Zeyong,Niu, Fujun,Wang, Yibo,Luo, Jing,&Lin, Zhanju.(2017).Impact of a thermokarst lake on the soil hydrological properties in permafrost regions of the Qinghai-Tibet Plateau, China.SCIENCE OF THE TOTAL ENVIRONMENT,574,751-759. |
| MLA | Gao, Zeyong,et al."Impact of a thermokarst lake on the soil hydrological properties in permafrost regions of the Qinghai-Tibet Plateau, China".SCIENCE OF THE TOTAL ENVIRONMENT 574(2017):751-759. |
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来源：寒区旱区环境与工程研究所
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