Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China
Permafrost is extremely sensitive to climate change. The degradation of permafrost has strong and profound effects on vegetation. The permafrost zone of northeastern China is the second largest region of permafrost in China and lies on the south edge of the Eurasian cryolithozone. This study analyze...
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ftdoajarticles:oai:doaj.org/article:2704157dfedb40c088ad01f4bb80801a 2023-05-15T17:55:17+02:00 Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China Jinting Guo Yuanman Hu Zaiping Xiong Xiaolu Yan Chunlin Li Rencang Bu 2017-04-01T00:00:00Z https://doi.org/10.3390/su9040551 https://doaj.org/article/2704157dfedb40c088ad01f4bb80801a EN eng MDPI AG http://www.mdpi.com/2071-1050/9/4/551 https://doaj.org/toc/2071-1050 2071-1050 doi:10.3390/su9040551 https://doaj.org/article/2704157dfedb40c088ad01f4bb80801a Sustainability, Vol 9, Iss 4, p 551 (2017) vegetation NDVI warming temperature ground surface temperature permafrost degradation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 article 2017 ftdoajarticles https://doi.org/10.3390/su9040551 2022-12-31T16:05:59Z Permafrost is extremely sensitive to climate change. The degradation of permafrost has strong and profound effects on vegetation. The permafrost zone of northeastern China is the second largest region of permafrost in China and lies on the south edge of the Eurasian cryolithozone. This study analyzed the spatiotemporal variations of the growing-season Normalization Difference Vegetation Index (NDVI) in the permafrost zone of northeastern China and analyzed the correlation between NDVI and ground surface temperatures (GST) during the years 1981–2014. Mean growing-season NDVI (MGS-NDVI) experienced a marked increase of 0.003 year−1 across the entire permafrost zone. The spatial dynamics of vegetation cover had a high degree of heterogeneity on a per pixel scale. The MGS-NDVI value increased significantly (5% significance level) in 80.57%, and this increase was mostly distributed in permafrost zone except for the western steppe region. Only 7.72% experienced a significant decrease in NDVI, mainly in the cultivated and steppe portions. In addition, MGS-NDVI increased significantly with increasing growing-season mean ground surface temperature (GS-MGST). Our results suggest that a warming of GS-MGST (permafrost degradation) in the permafrost region of northeastern China played a positive role in increasing plant growth and activities. Although increasing ground surface temperature resulted in increased vegetation cover and growth in the short time of permafrost degradation, from the long term point of view, permafrost degradation or disappearance may weaken or even hinder vegetation activities. Article in Journal/Newspaper permafrost Directory of Open Access Journals: DOAJ Articles Term Point ENVELOPE(-92.467,-92.467,62.134,62.134) Sustainability 9 4 551 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
vegetation NDVI warming temperature ground surface temperature permafrost degradation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
spellingShingle |
vegetation NDVI warming temperature ground surface temperature permafrost degradation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 Jinting Guo Yuanman Hu Zaiping Xiong Xiaolu Yan Chunlin Li Rencang Bu Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
topic_facet |
vegetation NDVI warming temperature ground surface temperature permafrost degradation Environmental effects of industries and plants TD194-195 Renewable energy sources TJ807-830 Environmental sciences GE1-350 |
description |
Permafrost is extremely sensitive to climate change. The degradation of permafrost has strong and profound effects on vegetation. The permafrost zone of northeastern China is the second largest region of permafrost in China and lies on the south edge of the Eurasian cryolithozone. This study analyzed the spatiotemporal variations of the growing-season Normalization Difference Vegetation Index (NDVI) in the permafrost zone of northeastern China and analyzed the correlation between NDVI and ground surface temperatures (GST) during the years 1981–2014. Mean growing-season NDVI (MGS-NDVI) experienced a marked increase of 0.003 year−1 across the entire permafrost zone. The spatial dynamics of vegetation cover had a high degree of heterogeneity on a per pixel scale. The MGS-NDVI value increased significantly (5% significance level) in 80.57%, and this increase was mostly distributed in permafrost zone except for the western steppe region. Only 7.72% experienced a significant decrease in NDVI, mainly in the cultivated and steppe portions. In addition, MGS-NDVI increased significantly with increasing growing-season mean ground surface temperature (GS-MGST). Our results suggest that a warming of GS-MGST (permafrost degradation) in the permafrost region of northeastern China played a positive role in increasing plant growth and activities. Although increasing ground surface temperature resulted in increased vegetation cover and growth in the short time of permafrost degradation, from the long term point of view, permafrost degradation or disappearance may weaken or even hinder vegetation activities. |
format |
Article in Journal/Newspaper |
author |
Jinting Guo Yuanman Hu Zaiping Xiong Xiaolu Yan Chunlin Li Rencang Bu |
author_facet |
Jinting Guo Yuanman Hu Zaiping Xiong Xiaolu Yan Chunlin Li Rencang Bu |
author_sort |
Jinting Guo |
title |
Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
title_short |
Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
title_full |
Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
title_fullStr |
Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
title_full_unstemmed |
Variations in Growing-Season NDVI and Its Response to Permafrost Degradation in Northeast China |
title_sort |
variations in growing-season ndvi and its response to permafrost degradation in northeast china |
publisher |
MDPI AG |
publishDate |
2017 |
url |
https://doi.org/10.3390/su9040551 https://doaj.org/article/2704157dfedb40c088ad01f4bb80801a |
long_lat |
ENVELOPE(-92.467,-92.467,62.134,62.134) |
geographic |
Term Point |
geographic_facet |
Term Point |
genre |
permafrost |
genre_facet |
permafrost |
op_source |
Sustainability, Vol 9, Iss 4, p 551 (2017) |
op_relation |
http://www.mdpi.com/2071-1050/9/4/551 https://doaj.org/toc/2071-1050 2071-1050 doi:10.3390/su9040551 https://doaj.org/article/2704157dfedb40c088ad01f4bb80801a |
op_doi |
https://doi.org/10.3390/su9040551 |
container_title |
Sustainability |
container_volume |
9 |
container_issue |
4 |
container_start_page |
551 |
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1766163202021785600 |