Zeraatkar, F. (2014) Calculation of the real Evapotranspiration of plants using Remote Sensing in Mansour Abad region of Birjand. Masters thesis, University of Zabol.
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Abstract
Evapotranspiration is an important component of the water balance is difficult to measure the actual amount and method of determination is limited. Common methods for estimating evapotranspiration generally point and maximum farm covers, if you plan to manage irrigation and water management in agriculture, estimation of actual evapotranspiration in irrigation systems and irrigation management is dependent on the plant is necessary. The use of estimating actual evapotranspiration due to the point of considering the lack of water stress and environmental and meteorological data accuracy is poor. Today, with advances in satellite technology and spatial variability of meteorological parameters and consequently due to evapotranspiration, using methods such as Remote Sensing based methods that consider the changes are more desirable. In this today, data from meteorological stations and station Birjand Mansour Abad and enjoying the algorithm in the surface energy balance, energy balance components and evapotranspiration to determine the actual and potential Mansour Abad basin were satellite images and then processing estimate using Landsat 7 ETM+ the data, the reflection coefficient of land use, land cover and vegetation indices radiation factor NDVI and SAVI, LAI and land surface temperatures were calculated and map the spatial distribution of actual daily evapotranspiration at the regional level was achieved. By comparing the result obtained through remote sensing evapotranspiration with two methods for estimating evapotranspiration (Hargreaves and Penman-Monteith) per year was observed that the results of remote sensing, with an average absolute error 0.22 experimental Hargreaves and Penman-Monteith 0.27 for the experimental method, good match with products derived from empirical methods that indicate the possibility of using remote sensing for estimating evapotranspiration place at different levels basin. In general, estimates of the amount of water needed (evapotranspiration) in different parts of the basin can be compared to the distribution of water and improve irrigation management actions that affect the management of water in the basin.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Evapotranspiration, Remote sensing, Landsat 7 ETM+ |
| Subjects: | S Agriculture > S Agriculture (General) |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 25 May 2016 05:29 |
| Last Modified: | 25 May 2016 05:29 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/652 |
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