Responses of riparian forests to flood irrigation in the hyper-arid zone of NW China
文献类型：期刊论文
| 作者 | Yu, Tengfei1,2,3; Feng, Qi1,2,3; Si, Jianhua1,2,3; Xi, Haiyang1,2,3; O'Grady, Anthony P.4; Pinkard, Elizabeth A.4 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2019-01-15 |
| 卷号 | 648页码:1421-1430 |
| 关键词 | Flood irrigation Evapotranspiration Eddy covariance Sap flow Riparian forests Hyper-arid zone |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2018.08.287 |
| 通讯作者 | Yu, Tengfei(yutf@lzb.ac.cn) |
| 英文摘要 | Knowledge of forest water use is crucial to water resources managers, especially in arid environments. Flood irrigation has sometimes been used to ameliorate forest decline, however, there has only been limited research on vegetation responses to these interventions. We undertook a study to quantify evapotranspiration (ET) and its components, transpiration (T) and evaporation (E), of two Populus euphratica Oliv. stands (MA: middle-aged and OA: old-aged) with and without flood irrigation in the lower Heihe River Basin of NW China. ET and T were measured using eddy covariance and sap flow methods, respectively. Understory E was estimated by difference. Annual ET was 766.4 mm in the MA stand and 532.5 mm in the OA stand with an average of 4.2 and 2.9 mm d(-1) during the growing season, respectively. ET of the MA stand was 44% higher than that of the OA stand, with contributions of 28% and 16% from E and T. Despite stand density, leaf area index and canopy cover being higher in the MA than OA stand sapwood area within the two stands was similar (MA 6.04 m(2) ha(-1) and OA 6.02 m(2) ha(-1)). We hypothesised lower understory E and a lower E to ET ratio in the MA stand than OA stand. However, E was approximately 63% of ET in both stands. Therefore, we conclude that differences in ET, T and E were mainly associated with the flood irrigation. This was further supported by the comparable ET between the OA stand and the other studies in arid regions of Central Asia. In conclusion, flood irrigation has a less significant effect on canopy water use (T) than understory E suggesting alternatives to flood irrigation might be more appropriate in this water-limited ecosystem. (c) 2018 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | POPULUS-EUPHRATICA OLIV. ; ENERGY-BALANCE CLOSURE ; TARIM RIVER-BASIN ; TAMARIX-RAMOSISSIMA STANDS ; MOJAVE DESERT FLOODPLAIN ; WET-DRY TROPICS ; WATER-USE ; EDDY-COVARIANCE ; NORTHWEST CHINA ; SAP-FLOW |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000447805500133 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558290 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Yu, Tengfei |
| 作者单位 | 1.Chinese Acad Sci, Alax Desert Ecohydrol Expt Res Stn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Gansu, Peoples R China 2.Chinese Acad Sci, Key Lab Ecohydrol Inland River Basin, Lanzhou 730000, Gansu, Peoples R China 3.Gansu Hydrol & Water Resources Engn Res Ctr, Lanzhou 730000, Gansu, Peoples R China 4.CSIRO Land & Water, 15 Coll Rd, Hobart, Tas 7005, Australia |
| 推荐引用方式 GB/T 7714 | Yu, Tengfei,Feng, Qi,Si, Jianhua,et al. Responses of riparian forests to flood irrigation in the hyper-arid zone of NW China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2019,648:1421-1430. |
| APA | Yu, Tengfei,Feng, Qi,Si, Jianhua,Xi, Haiyang,O'Grady, Anthony P.,&Pinkard, Elizabeth A..(2019).Responses of riparian forests to flood irrigation in the hyper-arid zone of NW China.SCIENCE OF THE TOTAL ENVIRONMENT,648,1421-1430. |
| MLA | Yu, Tengfei,et al."Responses of riparian forests to flood irrigation in the hyper-arid zone of NW China".SCIENCE OF THE TOTAL ENVIRONMENT 648(2019):1421-1430. |
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来源：寒区旱区环境与工程研究所
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