Relationship Between Lysimeter Area and Evapotranspiration (ET)

by Guiting Wang, Irrigation Experimental Station of, Nanshan Reservoir, Zhejiang Province, China,

Document Type: Proceeding Paper

Part of: Grouting in Geotechnical Engineering


The lysimeter is an important instrument for measuring evapotranspiration (ET) of crops. It is widely used in the irrigation and drainage experimental stations in China. However, the areas of lysimeters are often quite different, thus, measured evapotranspiration values are often not the same. According to the experimental date, evapotranspiration measured by a lysimeter with an area of 6m2 may represent field evapotranspiration. This paper discusses the relationship between evapotranspiration and area of lysimeters and presents a method for converting between them.

Subject Headings: Measuring instruments | Evapotranspiration | Crops | Water resources | Steel plates | Field tests | Irrigation | Drainage | China | Asia

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