[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.
Copy
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.