Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1080/15324982.2015.1061616 |
Partitioning evapotranspiration of desert plants under different water regimes in the inland Heihe River Basin, Northwestern China | |
Su, Peixi1; Li, Shanjia1,2; Zhou, Zijuan1; Shi, Rui1; Xie, Tingting1 | |
通讯作者 | Su, Peixi |
来源期刊 | ARID LAND RESEARCH AND MANAGEMENT |
ISSN | 1532-4982 |
EISSN | 1532-4990 |
出版年 | 2016 |
卷号 | 30期号:2页码:138-152 |
英文摘要 | Plant transpiration (T), soil evaporation (E), and the proportion of evaporation in evapotranspiration (ET), and their patterns of change were analyzed in a desert habitat along the middle and lower reaches of the Heihe River Basin, Gansu Province, China. Typical desert plants with different life forms were selected and small lysimeter observations were conducted; various species were measured under two soil water regimes using 50% (FC 50%) and 20% (FC 20%) of field capacity in 2 years. Under the FC 50% treatment the observed ratio of T to ET of desert plants was less than one-third, making the ratio of E to ET greater than two-thirds; the proportion of T to ET of desert plants increased to above 40%, and that of E declined to below 60% under the FC 20% treatment. The lowest T of desert plants was 130-140mm based on the plant crown projection area. The characteristic coefficient of ET of desert plants was twice that of the characteristic coefficient of transpiration. This study found that when ET was measured for the same desert plant species growing in different regions, the ET differed significantly (P<0.05) under the same water regimes; when comparing different plant species in the same region no obvious differences in the transpiration water requirement and ET were observed. The proportion of T in ET increased significantly and E in ET decreased markedly (P<0.05), if the soil moisture content declined to where the plants experienced water stress. |
英文关键词 | Characteristic coefficient Heihe River plant transpiration soil evaporation water consumption water requirement |
类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
收录类别 | SCI-E |
WOS记录号 | WOS:000372085000002 |
WOS关键词 | REFERENCE CROP EVAPOTRANSPIRATION ; MOJAVE DESERT ; TAMARIX-RAMOSISSIMA ; HALOXYLON AMMODENDRON ; SOIL EVAPORATION ; TRANSPIRATION ; REQUIREMENTS ; AGROFORESTRY ; RESPONSES ; STRESS |
WOS类目 | Environmental Sciences ; Soil Science |
WOS研究方向 | Environmental Sciences & Ecology ; Agriculture |
来源机构 | 中国科学院西北生态环境资源研究院 |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/191506 |
作者单位 | 1.Chinese Acad Sci, Cold & Arid Reg Environm & Engn Res Inst, Linze Inland River Basin Res Stn, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou 730000, Peoples R China; 2.Lanzhou Univ Technol, Sch Life Sci & Engn, Lanzhou, Peoples R China |
推荐引用方式 GB/T 7714 | Su, Peixi,Li, Shanjia,Zhou, Zijuan,et al. Partitioning evapotranspiration of desert plants under different water regimes in the inland Heihe River Basin, Northwestern China[J]. 中国科学院西北生态环境资源研究院,2016,30(2):138-152. |
APA | Su, Peixi,Li, Shanjia,Zhou, Zijuan,Shi, Rui,&Xie, Tingting.(2016).Partitioning evapotranspiration of desert plants under different water regimes in the inland Heihe River Basin, Northwestern China.ARID LAND RESEARCH AND MANAGEMENT,30(2),138-152. |
MLA | Su, Peixi,et al."Partitioning evapotranspiration of desert plants under different water regimes in the inland Heihe River Basin, Northwestern China".ARID LAND RESEARCH AND MANAGEMENT 30.2(2016):138-152. |
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