NDLI: Monitoring the Reduced Resilience of Forests in Southwest China Using Long-Term Remote Sensing Data

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Monitoring the Reduced Resilience of Forests in Southwest China Using Long-Term Remote Sensing Data

Content Provider	MDPI
Author	Jiang, Hao Song, Lisheng Li, Yan Ma, Mingguo Fan, Lei
Copyright Year	2021
Description	An increase in the frequency and severity of droughts associated with global warming has resulted in deleterious impacts on forest productivity in Southwest China. Despite attempts to explore the response of vegetation to drought, less is known about forest’s resilience in response to drought in Southwest China. Here, the reduced resilience of the forest was found based on remotely sensed optical and microwave vegetation products. The spatial distribution and temporal variation of resilience-reduced forest were assessed using the standardized precipitation evapotranspiration index (SPEI) and vegetation optical depth (VOD). Our findings showed that 40–50% of the forest appeared to have abnormally low resilience approximately 6 months after the severe drought. The spatial distributions of abnormally low resilience had a good agreement with the regions affected by the 2009–2011 drought events. In particular, our results indicated that areas of afforestation were more susceptible to drought than natural forest, maybe due to the different water uptake strategy of the diverse root systems. Our findings highlight the vulnerability of afforestation areas to climate change, and recommend giving more attention to soil water availability.
Starting Page	32
e-ISSN	20724292
DOI	10.3390/rs14010032
Journal	Remote Sensing
Issue Number	1
Volume Number	14
Language	English
Publisher	MDPI
Publisher Date	2021-12-22
Access Restriction	Open
Subject Keyword	Remote Sensing Reduced Resilience Forest Drought Events Southwest China
Content Type	Text
Resource Type	Article

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