Acta Geographica Sinica ›› 2021, Vol. 76 ›› Issue (3): 645-662.doi: 10.11821/dlxb202103011

• Environment and Ecosystem Services • Previous Articles     Next Articles

Comprehensive evaluation of resource and environment carrying capacity of Tibet based on a three-dimensional tetrahedron model

FENG Zhiming(), YOU Zhen(), YANG Yanzhao, SHI Hui   

  1. Resource Utilization and Environmental Remediation Laboratory, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China
  • Received:2020-06-30 Revised:2021-03-09 Online:2021-03-25 Published:2021-05-25
  • Contact: YOU Zhen E-mail:fengzm@igsnrr.ac.cn;youz@igsnrr.ac.cn
  • Supported by:
    The Second Tibetan Plateau Scientific Expedition and Research Program (STEP)(2019QZKK1006)

Abstract:

Quantitative evaluation and comprehensive measurement of resource and environmental carrying capacity are the technical keys in the research of resource and environmental carrying capacity from classification to synthesis. From a system perspective, this paper proposes a three-dimensional tetrahedron model with physical meaning to comprehensively evaluate resource and environmental carrying capacity, which is conducted on the structure of "human settlement environment suitability classification - resource and environmental carrying capacity restrictive classification - socioeconomic development adaptability classification - resource and environmental carrying capacity warning classification". Its results have clear policy guidance significance for the establishment of the dynamic-monitoring and early-warning mechanism for regional resource and environmental carrying capacity. Based on the above methods, this research, taking Tibet Autonomous Region as an example and using 1-km gridded data, quantitatively assessed regional resource and environmental carrying capacity at county level. The results show that there were about 3/4 areas in good condition of resources and environmental carrying status (surplus or balanced state), with more than 4/5 of population; the human settlement environment in Tibet was mainly characterized by unsuitability and critical suitability, while the socioeconomic development level there generally lagged behind. Within this context, we suggest that human settlement environment suitability and socioeconomic development level have greatly restricted the performance and improvement of resource and environmental carrying capacity in Tibet.

Key words: resource and environmental carrying capacity, comprehensive evaluation, tetrahedral model, monitoring and warning, Tibet