| Characteristics of ecosystem water use efficiency in a desert riparian forest | |
| Ma, Xiaohong1,2,3; Feng, Qi1,2; Su, Yonghong1,2; Yu, Tengfei1,2; Deo, Ravinesh C.1,2,4 | |
| 刊名 | ENVIRONMENTAL EARTH SCIENCES
 |
| 2018-05-01 | |
| 卷号 | 77期号:10页码:12 |
| 关键词 | Ecosystem water use efficiency The desert riparian forest Irrigation effects |
| ISSN号 | 1866-6280 |
| DOI | 10.1007/s12665-018-7518-z |
| 通讯作者 | Feng, Qi(qifeng@lzb.ac.cn) |
| 英文摘要 | The Ejin oasis, located on the river sides of a hyper-arid region, represents some of the richest desert ecosystems, populated with riparian forest. Water availability is the main limited factors for the distribution and growth of the forest. Currently, the water-carbon process and mechanisms in the desert riparian forest remain uncertain. The study investigated the seasonal and inter-annual variations in the gross primary productivity (GPP), evapotranspiration (ET) and ecosystem water use efficiency (WUE), and their relationships with the event (e.g., irrigation) and climatic factors. The results showed that the desert riparian forest produced new plant biomass with 0.79 g C kg(-1) of water loss during the growing season. In the study period, monthly GPP and ET was tightly coupled, and the mean cumulative GPP and ET from May-October were 676 g C m(-2) and 864 mm, respectively. Daily GPP and ET had similar relationships with global radiation (R-g), air temperature (T-a) and vapor pressure deficit at monthly scale. Consequently, the seasonal variations in WUE were not obvious in the growing season, except in September. In September, the value of WUE decreased significantly with an increase in T-a (for T-a > 15 A degrees C) after irrigation, which was attributable to the increased ET and a relatively steady GPP. It is possible that the time of irrigation is able to affect the seasonal course of WUE. The study has implications that enable more rational water management to maintain the the health and activities of the riparian forest in such a hyper-arid region. |
| 收录类别 | SCI |
| WOS关键词 | HEIHE RIVER-BASIN ; EXTREME ARID REGION ; POPULUS-EUPHRATICA ; GROUNDWATER LEVEL ; NORTHWEST CHINA ; CARBON-DIOXIDE ; SEASONAL-VARIATION ; WARMING CLIMATE ; LOWER REACHES ; EXCHANGE |
| WOS研究方向 | Environmental Sciences & Ecology ; Geology ; Water Resources |
| WOS类目 | Environmental Sciences ; Geosciences, Multidisciplinary ; Water Resources |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000432106800002 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2557830 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Feng, Qi |
| 作者单位 | 1.Chinese Acad Sci, 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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Univ Southern Queensland, Inst Agr & Environm IAg&E, ICACS, Sch Agr Computat & Environm Sci, Springfield, Qld 4300, Australia |
| 推荐引用方式 GB/T 7714 | Ma, Xiaohong,Feng, Qi,Su, Yonghong,et al. Characteristics of ecosystem water use efficiency in a desert riparian forest[J]. ENVIRONMENTAL EARTH SCIENCES,2018,77(10):12. |
| APA | Ma, Xiaohong,Feng, Qi,Su, Yonghong,Yu, Tengfei,&Deo, Ravinesh C..(2018).Characteristics of ecosystem water use efficiency in a desert riparian forest.ENVIRONMENTAL EARTH SCIENCES,77(10),12. |
| MLA | Ma, Xiaohong,et al."Characteristics of ecosystem water use efficiency in a desert riparian forest".ENVIRONMENTAL EARTH SCIENCES 77.10(2018):12. |
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