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Water Table Fluctuation and Its Effects on Vegetation in a Semiarid Environment : Volume 8, Issue 2 (01/04/2011)

By Duan, L.

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Book Id: WPLBN0004012872
Format Type: PDF Article :
File Size: Pages 34
Reproduction Date: 2015

Title: Water Table Fluctuation and Its Effects on Vegetation in a Semiarid Environment : Volume 8, Issue 2 (01/04/2011)  
Author: Duan, L.
Volume: Vol. 8, Issue 2
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Liu, X., Wang, X., Liu, T., Duan, L., Luo, Y., & Wang, W. (2011). Water Table Fluctuation and Its Effects on Vegetation in a Semiarid Environment : Volume 8, Issue 2 (01/04/2011). Retrieved from

Description: College of Conservancy and Civil Engineering, Inner Mongolia Agricultural University, Hohhot 010018, China. A good understanding of water table fluctuation effects on vegetation is crucial for sustaining fragile hydrology and ecology of semiarid areas such as the Horqin Sandy Land (HSL) in northern China, but such understanding is not well documented in literature. The objectives of this study were to examine spatio-temporal variations of water table and their effects on vegetation in a semiarid environment. A 9.71 km2 area within the HSL was chosen and well-instrumented to continuously measure hydrometeorologic parameters (e.g., water table). The area comprises of meadow lands and sandy dunes as well as transitional zones in between. In addition to those measured data, this study also used Landsat TM and MODIS imageries and meteorological data at a station near the study area. The spatio-temporal variations were examined using visual plots and contour maps, while the effects on vegetation were determined by overlaying a water table depth map with a vegetation index map derived from the MODIS imageries. The results indicated that water table was mainly dependent on local topography, localized geological settings, and human activities (e.g., reclamation). At annual and monthly scales, water table was mainly a function of precipitation and potential evapotranspiration. A region within the study area where depth to water table was smaller tended to have better (i.e., more dense and productive) vegetation cover. Further, the results revealed that water table fluctuation was more sensitive for vegetations in the meadow lands than in the transitional zones, but it was least sensitive for vegetations in the sandy dunes.

Water table fluctuation and its effects on vegetation in a semiarid environment

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