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[1]SHI Nana,QUAN Zhanjun,HAN Yu,et al.Spatio-temporal Changes of Vegetation NDVI and Its Relationship with Regional Climate in Wood-grass Ecotone of Northeast China During 2000-2010[J].Research of Soil and Water Conservation,2016,23(05):175-182.

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Spatio-temporal Changes of Vegetation NDVI and Its Relationship with Regional Climate in Wood-grass Ecotone of Northeast China During 2000-2010

Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume: 23 Number of periods: 2016 05 Page number: 175-182 Column: Public date: 2016-10-28

Title:: Spatio-temporal Changes of Vegetation NDVI and Its Relationship with Regional Climate in Wood-grass Ecotone of Northeast China During 2000-2010

Author(s):: SHI Nana¹, QUAN Zhanjun¹, HAN Yu¹, WANG Qi¹, ZHANG Zhenhua²; 1. Chinese Research Academy of Environmental Sciences, Beijing 100012, China;
2. Hebei Holy Environment Biotechnology Engineering Co., Ltd, Shijiazhuang 050051, China

Keywords:: wood-grass ecotone in Northeast China; NDVI; correlation analysis; dynamic degree

CLC:: TP79;X171.1

DOI:: -

Abstract:: Based on MODIS NDVI data and meteorological data during 2000—2010, spatial and temporal distribution of NDVI and its relationship with regional climate in wood-grass ecotone of Northeast China were analyzed. The ecotone was composed of typical grass zone, wood zone and wood-grass zone. The results showed that: (1) Monthly average variation of NDVI had a single peak, quaternary variation of NDVI had the highest value in summer; NDVI went up with fluctuation from 2000 to 2010; (2) There were significant spatial differences in vegetation NDVI, which generally decreased from east to west; the wood zone had the highest NDVI and the grass zone had the fastest increasing rate; (3) The inter-annual changes for the selected ecotone as a whole, the typical zone, the wood zone and the wood-grass zone were respectively correlated to precipitation, temperature, precipitation and temperature; (4) Within a year, NDVI had a significantly linear correlation with precipitation and exponential correlation with temperature; Both precipitation and temperature had time lag effects on NDVI during the growing season, with greater effects of precipitation than that of temperature; forest-grass zone had a lagging response to precipitation.

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