Acta Geographica Sinica ›› 2019, Vol. 74 ›› Issue (9): 1904-1920.doi: 10.11821/dlxb201909015

• Ecosystem Services • Previous Articles     Next Articles

Scale response characteristics and geographic exploration mechanism of spatial differentiation of ecosystem service values in Dabie Mountain area, central China from 1970 to 2015

HUANG Muyi1,YUE Wenze2,FANG Bin3(),FENG Shaoru1   

  1. 1. School of Environment and Energy Engineering, Anhui Jianzhu University, Hefei 230601, China
    2. Department of Land Management, Zhejiang University, Hangzhou 310058, China
    3. School of Geography, Nanjing Normal University, Nanjing 210023, China
  • Received:2018-10-23 Revised:2019-07-03 Online:2019-09-25 Published:2019-09-25
  • Contact: FANG Bin E-mail:wenyanfang731@163.com
  • Supported by:
    National Natural Science Foundation of China(41671533);National Natural Science Foundation of China(41671174);National Natural Science Foundation of China(41871169);Major Research Project of Humanities and Social Sciences in Colleges and Universities of Anhui Province(SK2018ZD043);Science and Technology Innovation Strategy and Soft Science Research Project of Anhui Province(201806a02020046)

Abstract:

Ecosystem services play an important role in regional ecological balance, ecosystem health, land and ecological security, and global climate change. The response characteristics of scale and the spatial differentiation mechanism of the ecological service value are worth discussing. Taking the Dabie Mountain area located in central China as the research object, based on the data of land use classification, this paper applied the methods of spatial statistics, hot spot analysis and geographical detector to examine the dynamic evolution characteristics, scale effect and spatial differentiation mechanism of the ecological service value of Dabie Mountain area from 1970 to 2015. The results show that over the 50 years, the overall value of ecological services in the Dabie Mountain area increased by 951 million yuan, while in recent years it decreased by 395 million yuan, accounting for 41.54% of the total value added. Scale is helpful for understanding the pattern and process of ecosystem. To strengthen the study of scale characteristics in the evaluation of ecosystem service function can improve the objectivity, credibility and practicability of the evaluation results. Therefore, in this paper, we made a comparative analysis through the scale of four types, which includes 9-level amplitude. The results show that the unit scale of township is the characteristic scale of the spatial differentiation of ecological service value in Dabie Mountain area, and the spatial difference information of the ecological service value at the township unit scale is rich, and the type of township unit scale is a more appropriate research scale level in the study area. To strengthen the geographical exploration of the spatial differentiation of ecosystem service value will be helpful to carry out regional ecological planning and ecosystem regulation. In this study, we analyzed the spatial differentiation mechanism of ecosystem service value in Dabie Mountain area by using the geographical detector. The results show that the explanatory power q value of the ecological land use proportion, land use degree and human influence composite index among the 16 influencing factors contributing to the spatial differentiation of ecological service value is nearly 40%, which is the main reason for the spatial differentiation. Elevation and slope factor q value is nearly 30%, which is a secondary factor. There are mainly three categories and 30 types of interaction combinations with an interactive detection q value of more than 50%. The interaction and synergistic effects of natural factors, human disturbance factors and landscape pattern factors enhance the explanatory power of spatial differentiation of ecological service value. Our work may provide a theoretical basis for the precise and diversified regulation of ecosystem functions in Dabie Mountain area.

Key words: ecosystem service value, scale response, spatial differentiation, geographic exploration mechanism, Dabie Mountain area