JOURNAL OF NATURAL RESOURCES ›› 2021, Vol. 36 ›› Issue (5): 1208-1223.doi: 10.31497/zrzyxb.20210510

• Special Forum on "Methodology and Practice on Coordinated 'Production-Living-Ecological' Space" • Previous Articles     Next Articles

Analyzing the carbon metabolism of "Production-Living-Ecological" space based on ecological network utility in Zhaotong

DU Jin-shuang1,2(), FU Jing-ying1,2, HAO Meng-meng1,2()   

  1. 1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2020-05-11 Revised:2020-12-24 Online:2021-05-28 Published:2021-07-28
  • Contact: HAO Meng-meng E-mail:dujs.18s@igsnrr.ac.cn;haomm@igsnrr.ac.cn

Abstract:

Analyzing the carbon metabolism process of "Production-Living-Ecological" space could contribute to achieving the regional elements integration and structure optimization of "Production-Living-Ecological" space, which could help to strive for green and low carbon development. Taking Zhaotong as an example, this research systematically analyzed the spatial and temporal distribution of carbon metabolism in "Production-Living-Ecological" space from 2010 to 2018 through calculating vertical carbon flux between urban system and atmosphere, and building horizontal carbon flows model between components of the urban system. Besides, ecological network analysis was used to evaluate the comprehensive ecological effects of the "Production-Living-Ecological" space evolution on urban carbon metabolism. The results suggested that: (1) The vertical net carbon flux and the horizontal net carbon flows in Zhaotong from 2010 to 2018 were both negative, which indicated that "Production-Living-Ecological" space evolution had a negative influence on the urban carbon metabolism balance, resulting in an increase in carbon emissions. (2) The main ecological relationship of "Production-Living-Ecological" land in carbon metabolism system was restrictive and predatory relationship. Ecological spaces were occupied by living spaces and production spaces, leading to the imbalance of carbon metabolism. (3) The value of whole ecological utility function J was 0.85 (< 1), showing that the comprehensive effect of "Production-Living-Ecological" space pattern change on urban carbon metabolism was negative. This result was consistent with the inference of net carbon flows calculations. The study results can provide theoretical and data basis for the optimization of land space utilization and low-carbon transition in the study area, as well as decision-making support for the development of "Production-Living-Ecological" space.

Key words: "Production-Living-Ecological" space, carbon metabolism, carbon flows, ecological network analysis