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JOURNAL OF DESERT RESEARCH  2013, Vol. 33 Issue (1): 46-52    DOI: 10.7522/j.issn.1000-694X.2013.00007
Biology and Soil     
Monitoring of Desertification Dynamic in Kenya during 2001-2010 Using MOD13Q1 Data
HE Lei1, WANG Chao1, BIE Qiang1, ZHAO Chuan-yan2
1.Institute of Remote Sensing and Geographic Information System, Lanzhou University, Lanzhou 730000, China;
2.State Key Laboratory of Pastoral Agricultural Ecosystem, Lanzhou University, Lanzhou 730000, China
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Abstract  

Kenya was selected as a study area and MODIS MOD13Q1-NDVI data with high temporal resolution were used in this study. Based on the accumulation calculation of NDVI values, the NDVI images in Kenya in 2001 and 2010 were obtained. The vegetation coverage in Kenya was calculated by the dimidiate pixel model, which was used to assess desertification in Kenya. Results showed that there was no significant desertification development in Kenya during the past 10 years, even though the desertification was still a serious problem. The trends of different desertification grades were different: the areas of slight desertification and serious desertification decreased. However, there was opposite trend for the non-desertification and moderate desertification, the areas of the two types increased. And the trends of desertification in different provinces were also different. At a small spatial scale, we compared classification results of desertification grades with MODIS and Landsat-5 TM images. There existed consistent in classification results with MODIS and Landsat-5 TM images, but Landsat-5 TM data could provide a more detailed description of desertification in key areas.

Key words:  Kenya      desertification      vegetation coverage      MOD13Q1-NDVI     
Received:  25 November 2011      Published:  20 January 2013
ZTFLH:  X144  

Cite this article: 

HE Lei1, WANG Chao1, BIE Qiang1, ZHAO Chuan-yan2. Monitoring of Desertification Dynamic in Kenya during 2001-2010 Using MOD13Q1 Data. JOURNAL OF DESERT RESEARCH, 2013, 33(1): 46-52.

URL: 

http://www.desert.ac.cn/EN/10.7522/j.issn.1000-694X.2013.00007     OR     http://www.desert.ac.cn/EN/Y2013/V33/I1/46

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