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Journal of Geo-information Science >

2014 , Vol. 16 >Issue 1: 126 - 133

DOI: https://doi.org/10.3724/SP.J.1047.2013.00126

ARTICLES

Analysis of Vegetation Fractional Cover in Jungar Banner Based on Time-series Remote Sensing Data

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  • 1. State Key laboratory of Remote Sensing Science, Institute of Remote Sensing and Digital Earth, CAS, Beijing 100101, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Division of Ecological Environment, Department of Development Planning and Assets Management, State Forestry Administration, Beijing 100714, China;
    4. Center of Desertification Control, State Forestry Administration, Beijing 100714, China;
    5. Biosphere Informatics Laboratory, Department of Social Informatics, Graduate School of Informatics, Kyoto University, Kyoto 606-8501, Japan

Received date: 2013-03-29

  Revised date: 2013-06-03

  Online published: 2014-01-05

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Abstract

It has been more than 10 years since Jungar Banner began to apply the policies of forest implement and desertification control. It is important to understand the condition of vegetation recovery, so as to make more proper environment management policies and achieve sustainable economic development in the future. In this paper, we chose Landsat thematic mapper/enhanced thematic mapper plus(TM/ETM+) data in 1990, 2000 and 2011 to derive the vegetation fractional cover in Jungar Banner. And through image analyzing and processing, we got the NDVI values of pure vegetation and pure soil in such three periods. Then we got the vegetation fractional cover distribution maps in 1990, 2000 and 2011 by conducting the pixel dichotomy model. At last we analyzed the temporal and spatial changes of vegetation fractional cover, such as the transfer matrixes, the vegetation restoration/degradation and the driving forces which lead to such changes. Through quantitative analysis, we reached the conclusions that: in the past 21 years, the mean vegetation fractional cover of Jungar Banner has been improved from 15.53% in 1990 to 17.82% in 2000 and to 29.30% in 2011. Most area of Jungar Banner shows the phenomena of vegetation recovery, and the vegetation restoration phenomena is much more obvious from 2000 to 2011, i.e., from 1990 to 2000, 63.06% of the total area shows vegetation restoration phenomena, while from 2000 to 2010, 84.53% of the total area shows vegetation restoration phenomena. The driving forces analysis shows that the changes of vegetation fractional cover in Jungar Banner don't have significant correlation with the rainfall factor, while the changes have a significant correlation with afforestation projects which have been conducted since 2000.

Key words： vegetation fractional cover; NDVI; Jungar Banner; dimidiate pixel model; changes detection

Cite this article

TIAN Haijing, CAO Chunxiang, DAI Shengmao, ZHENG Sheng, LU Shilei, XU Min, CHEN Wei, ZHAO Jian, LIU Di, ZHU Hongyuan . Analysis of Vegetation Fractional Cover in Jungar Banner Based on Time-series Remote Sensing Data[J]. Journal of Geo-information Science, 2014 , 16(1) : 126 -133 . DOI: 10.3724/SP.J.1047.2013.00126

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