An approach to compute the C factor for universal soil loss equation using EOS-MODIS vegetation index (VI)

Hui Li; Huizhong He; Xiaoling Chen; Lihua Zhang

doi:10.1117/12.815335

29 December 2008 An approach to compute the C factor for universal soil loss equation using EOS-MODIS vegetation index (VI)

Hui Li, Huizhong He, Xiaoling Chen, Lihua Zhang

Author Affiliations +

Proceedings Volume 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA); 728514 (2008) https://doi.org/10.1117/12.815335
Event: International Conference on Earth Observation Data Processing and Analysis, 2008, Wuhan, China

Abstract

C factor, known as cover and management factor in USLE, is one of the most important factors since it represents the combined effects of plant, soil cover and management on erosion, whereas it also most easily changed variables by men for it itself is time-variant and the uncertainty nature. So it's vital to compute C factor properly in order to model erosion effectively. In this paper we attempt to present a new method for calculating C value using Vegetation Index (VI) derived from multi-temporal MODIS imagery, which can estimate C factor in a more scientific way. Based on the theory that C factor is strongly correlated with VI, the average annual C value is estimated by adding the VI value of three growth phases within a year with different weights. Modified Fournier Index (MFI) is employed to determine the weight of each growth phase for the vegetation growth and agricultural activities are significantly influenced by precipitation. The C values generated by the proposed method were compared with that of other method, and the results showed that the results of our method is highly correlated with the others. This study is helpful to extract C value from satellite data in a scientific and efficient way, which in turn could be used to facilitate the prediction of erosion.

Citation Download Citation

Hui Li, Huizhong He, Xiaoling Chen, and Lihua Zhang "An approach to compute the C factor for universal soil loss equation using EOS-MODIS vegetation index (VI)", Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 728514 (29 December 2008); https://doi.org/10.1117/12.815335

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available

Members: $17.00

Non-members: $21.00 ADD TO CART

PROCEEDINGS
7 PAGES

DOWNLOAD PAPER SAVE TO MY LIBRARY

GET CITATION

RIGHTS & PERMISSIONS

Get copyright permission Get copyright permission on Copyright Marketplace

KEYWORDS

Vegetation

MODIS

Agriculture

Virtual colonoscopy

Satellites

Associative arrays

Factor analysis

Show All Keywords

Keywords/Phrases

Search In:

Publication Years