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Spatial–temporal change patterns of vegetation coverage in China and its driving mechanisms over the past 20 years based on the concept of geographic division
- Source :
- Geomatics, Natural Hazards & Risk, Vol 11, Iss 1, Pp 2263-2281 (2020)
- Publication Year :
- 2020
- Publisher :
- Taylor & Francis Group, 2020.
-
Abstract
- Based on the datasets of MODIS NDVI and SPOT VETGETATION NDVI from 1999 to 2018, this study has introduced the gravity centre model and time-lag analysis model to explore the spatial–temporal change patterns of the NDVI in China in different sub-regions and its response to climate factors. Results showed that: (1) In 1999–2018, there was an increasing trend in vegetation coverage in China on the whole, with a larger increase occurring in central south and northeast China. (2) The NDVIs of six land use types showed a similar change trend with temperature and precipitation with different time lags. (3) The maximum correlation coefficients between the NDVIs of different land types and climate factors appeared at Lag 0–1 (current month and previous one month) and Lag 0–2 (current month, previous one and two month), while the correlation coefficients were the lowest at Lag 3 (previous three month). (4) During the past twenty years, the gravity centres of the NDVI, temperature and precipitation moved northward as a whole with similar migration trajectories. These results could provide important decision supports for vegetation restorations and ecological protections in different sub-regions of China.
- Subjects :
- Gravity (chemistry)
010504 meteorology & atmospheric sciences
geographic division
lcsh:Risk in industry. Risk management
0211 other engineering and technologies
02 engineering and technology
01 natural sciences
Normalized Difference Vegetation Index
lcsh:TD1-1066
medicine
Temporal change
lcsh:Environmental technology. Sanitary engineering
China
climate factors
lcsh:Environmental sciences
021101 geological & geomatics engineering
0105 earth and related environmental sciences
General Environmental Science
lcsh:GE1-350
spatial–temporal change
Division (mathematics)
lcsh:HD61
Geography
driving mechanisms
Climatology
ndvi
General Earth and Planetary Sciences
medicine.symptom
Vegetation (pathology)
Subjects
Details
- Language :
- English
- ISSN :
- 19475713 and 19475705
- Volume :
- 11
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Geomatics, Natural Hazards & Risk
- Accession number :
- edsair.doi.dedup.....911f6879c4cfca0639e7d8708992bf52