Evaluation of the Spatiotemporal Variations in the Eco-environmental Quality in China Based on the Remote Sensing Ecological Index

The eco-environment is dynamic and shows a continuous process of long-term change. It is helpful for policymakers to know the status of the regional eco-environment through accurate evaluations of the history and current situation of the regional eco-environment. The remote sensing ecological index...

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Bibliographic Details
Published in:Remote sensing (Basel, Switzerland) Switzerland), 2020-08, Vol.12 (15), p.2462
Main Authors: Liao, Weihua, Jiang, Weiguo
Format: Article
Language:English
Subjects:
Cloud computing
Decision making
ecological zone
Entropy
Environmental degradation
Environmental quality
Granulation
knowledge granulation entropy
Methods
Principal components analysis
Regional analysis
Remote sensing
Researchers
RSEI
spatiotemporal change
Spectroradiometers
Studies
Sustainable development
Vegetation
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Summary:The eco-environment is dynamic and shows a continuous process of long-term change. It is helpful for policymakers to know the status of the regional eco-environment through accurate evaluations of the history and current situation of the regional eco-environment. The remote sensing ecological index (RSEI) model of China was established in this study by using four indexes: wetness, greenness, dryness, and heat. Knowledge granulation of the RSEIs were carried out, and a method to determine the weights of the knowledge granulation entropy of the indexes based on their characteristics was proposed. This study used Moderate Resolution Image Spectroradiometer (MODIS) data from the Google Cloud Computing Platform to study and calculate the eco-environmental quality of China from 2000–2017. The overall eco-environmental quality in China tended to improve from 2000–2017, although there were large areas of ecological degradation from 2009–2014. The eco-environment of eastern China was better than that of western China. Most of the national ecological areas were third-level ecological areas, which had moderate environmental quality. Dryness was the most important factor affecting the quality of the eco-environment, followed by greenness, which reflected the increasing environmental damage caused by human activities in China in recent years.
ISSN:2072-4292
2072-4292
DOI:10.3390/rs12152462