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2011•Journal of Northwest UniversityRequires access

The dynamic vegetation cover change in Loess Plateau

Lu Xia

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Abstract

Aim Analysis on the dynamic vegetation cover change in Loess Plateau from 1998 to 2005.Methods Dynamic changes in Loess Plateau vegetation over 8 years and their spatial patterns were explored,using maximum NDVI per month,mean NDVI per year and NDVI deviation derived from SPOT VEGETATION S10 NDVI as indexes and adopting time-series analysis approach.Results Although significant declines appeared from 1998 to 2001 and from 2004 to 2005,an increasing trend occurred over the past eight years.Conclusion The dynamic vegetation cover is closely coupled with climatic fluctuation,vegetation increased areas and decreased areas are intervened mutually in middle of Loess Plateau,which is caused by agricultural activities,city construction,government policies and the response of vegetation to climate changes.

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Aim Analysis on the dynamic vegetation cover change in Loess Plateau from 1998 to 2005.Methods Dynamic changes in Loess Plateau vegetation over 8 years and their spatial patterns were explored,using maximum NDVI per month,mean NDVI per year and NDVI deviation derived from SPOT VEGETATION S10 NDVI as indexes and adopting time-series analysis approach.Results Although significant declines appeared from 1998 to 2001 and from 2004 to 2005,an increasing trend occurred over the past eight years.Conclusion The dynamic vegetation cover is closely coupled with climatic fluctuation,vegetation increased areas and decreased areas are intervened mutually in middle of Loess Plateau,which is caused by agricultural activities,city construction,government policies and the response of vegetation to climate changes.

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Available abstract

Aim Analysis on the dynamic vegetation cover change in Loess Plateau from 1998 to 2005.Methods Dynamic changes in Loess Plateau vegetation over 8 years and their spatial patterns were explored,using maximum NDVI per month,mean NDVI per year and NDVI deviation derived from SPOT VEGETATION S10 NDVI as indexes and adopting time-series analysis approach.Results Although significant declines appeared from 1998 to 2001 and from 2004 to 2005,an increasing trend occurred over the past eight years.Conclusion The dynamic vegetation cover is closely coupled with climatic fluctuation,vegetation increased areas and decreased areas are intervened mutually in middle of Loess Plateau,which is caused by agricultural activities,city construction,government policies and the response of vegetation to climate changes.

Key concepts: Normalized Difference Vegetation Index, Vegetation (pathology), Loess plateau, Vegetation cover, Loess, Physical geography, Plateau (mathematics), Environmental science

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