Assessment of ecological environment in Chifeng City based on Landsat imagery
OUYANG Ling1,2, MA Hui-yao2,3, WANG Zong-ming2,4, WANG Zhao-wei5, YU Xian-shuang1
1. Chifeng University, Chifeng 024000, China; 2. Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China; 3. Chart Information Center, Tianjin 300000, China; 4. National Earth System Science Data Center of China, Beijing 100101, China; 5. Chifeng Ecological Environment Monitoring Station, Chifeng 024000, China
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.
欧阳玲, 马会瑶, 王宗明, 王昭伟, 于显双. 基于Landsat影像的赤峰市生态环境状况评估[J]. 中国环境科学, 2020, 40(9): 4048-4057.
OUYANG Ling, MA Hui-yao, WANG Zong-ming, WANG Zhao-wei, YU Xian-shuang. Assessment of ecological environment in Chifeng City based on Landsat imagery. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(9): 4048-4057.
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