Bulletin of Surveying and Mapping ›› 2022, Vol. 0 ›› Issue (8): 14-21,35.doi: 10.13474/j.cnki.11-2246.2022.0226

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Spatio-temporal evolution of eco-environment quality and the response to climate change and human activities in northern China

WANG Yubai1, GENG Jia2, ZHOU Yuyu3, ZHOU Zeyu4, FANG He5, GENG Jing6, ZHANG Rui7, XU Dong8   

  1. 1. School of Geomatics Science and Technology, Nanjing Tech University, Nanjing 211816, China;
    2. International Hospitality Management School, University of Sanya, Sanya 572022, China;
    3. Department of Geological and Atmospheric Sciences, Iowa State University, Ames 50011, USA;
    4. Advanced Research Institute of Multidisciplinary Sciences, Beijing University of Technology, Beijing 100081, China;
    5. Zhejiang Climate Center, Hangzhou 310017, China;
    6. Academician workstation of Zhai Mingguo, University of Sanya, Sanya 572022, China;
    7. School of Geography and Information Engineering, China University of Geosciences (Wuhan), Wuhan 430074, China;
    8. State Key Laboratory of Remote Sensing Science, Beijing Normal University, Beijing 100875, China
  • Received:2021-12-23 Published:2022-09-01

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Abstract: The northern China that is a typical climate change sensitive area in China has a vast territory, complex and diverse landforms, a wide distribution of arid areas, and also serious problems such as wind and sand hazards and soil erosion. However, the laws governing the evolution of eco-environmental quality (EEQ) and its response to climate change and human activities in northern China in recent decades are still unclear. Understanding these laws is of great significance to further strengthening the ecological civilization construction and maintaining biodiversity in northern China. Based on CHEQ and other remote sensing data such as climate indicators and nighttime light data, using trend analysis, coefficient of variation, partial correlation analysis, multiple regression analysis, re-standard range analysis, this study explores the characteristics of the temporal and spatial changes of the EEQ in northern China from 2001 to 2018 and its response to climate change and human activities. The results show that: ①The CHEQ index in northern China from 2001 to 2018 shows a slight downward trend, with a spatial distribution characteristic of “high in the east and low in the west, high in the north and south, and low in the middle in the north”; ②In the past 18 years, only 18.66% of the areas where the EEQ has been improved in northern China, while degraded areas accounted for more than 40% of the total area; ③The EEQ has a significant negative correlation with temperature and human activities (P<0.05), and a significant positive correlation with precipitation (P<0.05); ④The area where climate change plays a leading role in the change of EEQ has reached 90% of the study area. While making up for the deficiencies of existing research, this study can provide a scientific basis for quickly grasping the changing laws of the EEQ under the development of green economy in northern China and improving the effect of ecological civilization construction, and provide theoretical support for the scientific policy of “Lucid waters and lush mountains”.

Key words: ecological environmenalt quality, CHEQ, climate change, human activities, northern China

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