| EVAPOTRANSPIRATION OF LOW-LYING PRAIRIE WETLAND IN MIDDLE REACHES OF HEIHE RIVER IN NORTHWEST CHINA | |
| Wu Jin-kui1,2; Ding Yong-jian1,2; Wang Gen-xu1; Shen Yong-ping1,2; Yamazaki, Yusuke3; Kubota, Jumpei3 | |
| 刊名 | CHINESE GEOGRAPHICAL SCIENCE
 |
| 2005-12-01 | |
| 卷号 | 15期号:4页码:325-329 |
| 关键词 | evapotranspiration low-lying prairie wetland inland river basin |
| ISSN号 | 1002-0063 |
| 通讯作者 | Wu Jin-kui(jkwu@lzb.ac.cn) |
| 英文摘要 | Low-lying prairie wetland, which has characteristics of both grassland and wetland, has irreplaceable ecological functions in inland river basins of Northwest China. Owing to its small-scale distribution, so far, the observation and research on it are rare. The estimation of evapotranspiration is significant to ecological and environmental construction, scientific management of pasture and protection of wetland. For studying the evapotranspiration (ET) of low-lying prairie wetland in the middle reaches of the Heihe River, an inland river, in Northwest China, the automatic weather station in Linze Ecological Experimental Station of Lanzhou University (39 degrees 15'3 '' N, 100 degrees 03'52 '' E), Linze, Gansu Province, was selected as a case study. Based on meteorological data collected, Bowen-Ratio Energy Balance (BREB) method was used to calculate the evapotranspiration (ET) of low-lying prairie wetland. The analysis results showed that in a whole year (September 2003 - August 2004), the total ET was 611.5 mm and mean daily 1.67 mm/d. The ET varied with different growing stages. In non-growing stage (NGS), initial growing stage (IGS), middle growing stage (MGS) and end growing stage (EGS), the ET was 0.57, 2.01, 3.82 and 1.49 mm/d, with a percentage of total ET of 18.26%, 9.20%, 61.83% and 10.71% respectively. In March, ET began to increase. But in April, the ET increased most. After that, it increased gradually and got the maximal value in July. From then on, the ET decreased gradually. In September, the ET decreased rapidly. With the ending of growing and the freezing of soil, the ET stopped from the middle of November to February in next year. Hourly ET analysis showed that at 8: 00 a. m. (during MGS at 7: 00 a. m.), the evapotranspiration began, at 13: 00 p.m. got its maximal value and at 19: 00 p. m. (during MGS at 20: 00 p. m.), the evapotranspiration stopped. The intensity of ET in sunny day was much larger than that in cloudy day in the same growing stage. |
| 收录类别 | SCI |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| 出版者 | SPRINGER |
| WOS记录号 | WOS:000206580800006 |
| 内容类型 | 期刊论文 |
| URI标识 | http://www.corc.org.cn/handle/1471x/2555659 |
| 专题 | 寒区旱区环境与工程研究所 |
| 通讯作者 | Wu Jin-kui |
| 作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Lanzhou 730000, Peoples R China 2.Lab Climate Study China Metrol Adm, Beijing 100041, Peoples R China 3.Res Inst far Humanity & Nat, Kyoto 6020778, Japan |
| 推荐引用方式 GB/T 7714 | Wu Jin-kui,Ding Yong-jian,Wang Gen-xu,et al. EVAPOTRANSPIRATION OF LOW-LYING PRAIRIE WETLAND IN MIDDLE REACHES OF HEIHE RIVER IN NORTHWEST CHINA[J]. CHINESE GEOGRAPHICAL SCIENCE,2005,15(4):325-329. |
| APA | Wu Jin-kui,Ding Yong-jian,Wang Gen-xu,Shen Yong-ping,Yamazaki, Yusuke,&Kubota, Jumpei.(2005).EVAPOTRANSPIRATION OF LOW-LYING PRAIRIE WETLAND IN MIDDLE REACHES OF HEIHE RIVER IN NORTHWEST CHINA.CHINESE GEOGRAPHICAL SCIENCE,15(4),325-329. |
| MLA | Wu Jin-kui,et al."EVAPOTRANSPIRATION OF LOW-LYING PRAIRIE WETLAND IN MIDDLE REACHES OF HEIHE RIVER IN NORTHWEST CHINA".CHINESE GEOGRAPHICAL SCIENCE 15.4(2005):325-329. |
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