Influence of Land Use Patterns on Evapotranspiration and Its Components in a Temperate Grassland Ecosystem
Joint Authors
Li, Yuzhe
Fan, Jiangwen
Hu, Zhongmin
Shao, Quanqin
Zhang, Liangxia
Yu, Hailing
Source
Issue
Vol. 2015, Issue 2015 (31 Dec. 2015), pp.1-12, 12 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2015-06-07
Country of Publication
Egypt
No. of Pages
12
Main Subjects
Abstract EN
To better understand variation in response of components of ecosystem evapotranspiration (ET) to grassland use differences, we selected three typical land use patterns in a temperate steppe area: grazed steppe (G), steppe with grazers excluded (GE), and steppe cultivated to cropland (C).
ET was divided into its components evaporation (E) and canopy transpiration (T) using herbicide and a chamber attached to a portable infrared gas analyzer (Li-6400).
The results indicated that daily water consumption by ET in G was 3.30 kg m−2 d−1; compared with G, ET increased significantly in GE at 13.4% and showed a trend of 6.73% increase in C.
Daily water consumption by E increased 24.3% in GE relative to G, and C showed 20.2% more than GE.
At 0.46, E/ET in C was significantly higher than G at 0.35.
Air temperature and the vapor pressure deficit were closely correlated with variation in diurnal ET, E, and T.
The leaf area index (LAI) was also positively correlated with daily ET and E varied among grassland use patterns and explained variation in E/ET (81%).
Thus, variation in LAI strongly influences the overall magnitude of ecosystem ET and the composition of its components under different grassland use patterns.
American Psychological Association (APA)
Li, Yuzhe& Fan, Jiangwen& Hu, Zhongmin& Shao, Quanqin& Zhang, Liangxia& Yu, Hailing. 2015. Influence of Land Use Patterns on Evapotranspiration and Its Components in a Temperate Grassland Ecosystem. Advances in Meteorology،Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1052737
Modern Language Association (MLA)
Li, Yuzhe…[et al.]. Influence of Land Use Patterns on Evapotranspiration and Its Components in a Temperate Grassland Ecosystem. Advances in Meteorology No. 2015 (2015), pp.1-12.
https://search.emarefa.net/detail/BIM-1052737
American Medical Association (AMA)
Li, Yuzhe& Fan, Jiangwen& Hu, Zhongmin& Shao, Quanqin& Zhang, Liangxia& Yu, Hailing. Influence of Land Use Patterns on Evapotranspiration and Its Components in a Temperate Grassland Ecosystem. Advances in Meteorology. 2015. Vol. 2015, no. 2015, pp.1-12.
https://search.emarefa.net/detail/BIM-1052737
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1052737