[1]LIU Luodan,LI Jing,LIU Caixia,et al.Analysis on the Characteristics of Temporal and Spatial Changes and Influencing Factors of Vegetation Coverage in the Yangtze River Economic Belt from 2000 to 2015[J].Research of Soil and Water Conservation,2021,28(06):330-336.
Copy
Research of Soil and Water Conservation[ISSN 1005-3409/CN 61-1272/P] Volume:
28
Number of periods:
2021 06
Page number:
330-336
Column:
Public date:
2021-10-10
- Title:
-
Analysis on the Characteristics of Temporal and Spatial Changes and Influencing Factors of Vegetation Coverage in the Yangtze River Economic Belt from 2000 to 2015
- Author(s):
-
LIU Luodan1,LI Jing1,LIU Caixia2,YAN Xiaoxiao1
-
(1.College of Geoscience and Surveying Engineering,China University of Mining and Technology-Beijing,Beijing 100083,China; 2.Institute of Remote Sensing and Digital Earth,Chinese Academy of Sciences,Beijing 100101,China)
-
- Keywords:
-
Yangtze River Economic Belt; GIMMS-NDVI; fluctuation; partial correlation analysis; multi-factorial effect
- CLC:
-
Q948
- DOI:
-
-
- Abstract:
-
As one of the major strategic areas related to the overall development of the country,in order to implement important strategic measures to systematically restore the ecology of the Yangtze River Economic Belt,based on the GIMMS-NDVI long-time series data from 2000 to 2015,we used trend analysis,volatility analysis,partial correlation analysis and other methods to analyze and study the temporal and spatial dynamic characteristics of vegetation cover and the main factors of its changes in the Yangtze River Economic Belt over the past 16 years,and the dynamic response relationship between land use and vegetation change from the perspective of large-scale and multi-factor analysis. The results showed that the inter-annual change of NDVI in the Yangtze River Economic Belt had been increasing slowly in the past 16 years(the annual rate was 0.44%),the overall fluctuation of the study area was relatively stable(CVmean=6.89%); spatially,the areas with a decreasing trend mainly distributed in Shanghai,the southeast of Jiangsu Province,the Sichuan Basin and the lower reaches of the Yangtze River(approximately 17.11%); Among the terrain factors,altitude and slope had a significant impact on vegetation changes,and in the range of 500~1 000 m above sea level and 0°~5° slope,the proportion of the area with an increasing trend of NDVI reached the maximum; in terms of driving factors,the partial correlation between NDVI and temperature(rmean=0.095)in the study area was higher than that of precipitation(rmean=-0.004); in addition,the increase in residential land was the main reason for the decrease in NDVI,and the land type change caused by returning farmland to forest(grass)was an important factor in the increase in NDVI in the study area. Among the influencing factors,altitude,slope and air temperature have a great influence on the vegetation change in the study area. In the future,the ecological protection can be combined with the terrain characteristics,so as to make more reasonable policies.