基于Landsat影像的赤峰市生态环境状况评估

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Abstract According to the evaluation method of “Technical Criterion for Eco-environmental Status Evaluation(HJ/T192—2015)”, this study evaluated the eco-environmental status and its changes in Chifeng, Inner Mongolia, China with the remote sensing data and geographic information in 1990, 2000, 2010 and 2015. Results showed that the evolution of eco-environmental status during this period in Chifeng could be divided into three stages: the degradation period from 1990 to 2000, the recovery period from 2000 to 2010, and the stable period from 2010 to 2015. Ecological environment index (EI) were 70.58, 61.21, 67.63 and 68.35 in 1990, 2000, 2010 and 2015, respectively, and the overall ecological environment was fine. From 1990 to 2015, the degree of change in eco-environmental status was –2.23, slightly worse off. During the period of 1990~2000 and the period of 2000~2010, the change of EI became positive from negative, which indicated that the eco-environmental status of Chifeng was improved significantly during 2000~2010. From 2000~2010 to 2010~2015, the change in EI became smaller, indicating that the eco-environmental status was stabilized in 2010~2015. Acceleration of urbanization and shortage of water resources were the main limiting factors for the improvement of ecological environment in Chifeng. Therefore, it is necessary to further promote ecological protection projects and make rational use of groundwater resources.

Key words： eco-environment status land cover land degradation water resource shortage Chifeng

Received: 31 January 2020

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X171

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	Articles by authors
	OUYANG Ling
	MA Hui-yao
	WANG Zong-ming
	WANG Zhao-wei
	YU Xian-shuang

Cite this article:

OUYANG Ling,MA Hui-yao,WANG Zong-ming等. Assessment of ecological environment in Chifeng City based on Landsat imagery[J]. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(9): 4048-4057.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2020/V40/I9/4048

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