PROGRESS IN GEOGRAPHY ›› 2011, Vol. 30 ›› Issue (7): 771-787.doi: 10.11820/dlkxjz.2011.07.001

• Original Articles •     Next Articles

Conceptual Framework of Carbon Sequestration Rate and Potential Increment of Carbon Sink of Regional Terrestrial Ecosystem and Scientific Basis for Quantitative Carbon Authentification

YU Guirui1, WANG Qiufeng1, LIU Yingchun1,2, LIU Yinghui3   

  1. 1. Synthesis Research Center of CERN, Key Laboratory of Ecosystem Network Observation and Modeling, Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China;
    2. Graduate University of Chinese Academy of Sciences, Beijing 100049, China;
    3. Beijing Normal University, Beijing 100875, China
  • Received:2011-01-01 Revised:2011-04-01 Online:2011-07-25 Published:2011-07-25

Abstract: It is not only an urgent need for mitigating global climate change to study the carbon sequestration rate, potential increment of carbon sink of regional terrestrial ecosystem and its quantitative authentification, but also the core task of carbon cycle research in earth system, and the scientific foundation of terrestrial ecosystem management. In the past two decades, vast research have been done at home and abroad, and a lot of feasible techniques for increasing carbon sink have been developed in the practice of carbon management. Meanwhile, many concepts of carbon sequestration rate and potential increment of carbon sink of terrestrial ecosystem, and methods for carbon accounting and authentification have been put forward based on different demands and subjects. Due to lacking systematic and sufficient discussion, large discrepancy exists in the understanding of related concepts among different sections and subjects, which leads to the concept confusion and the difficulty in the standardization of accounting methods. In this paper, related concepts such as carbon storage, carbon sequestration rate, and carbon sequestration potential of ecosystem were expounded systematically based on the basic concept of carbon sequestration of terrestrial ecosystem; practical potential of carbon sequestration, socioeconomic potential of carbon sequestration, technical potential of carbon sequestration, theoretical potential of carbon sequestration, and the potential of carbon sequestration ratified by Kyoto Protocol were analyzed based on the realizability of the techniques for increasing carbon sink; and the scientific foundation, limitation and uncertainty of different methods for authenticating, analyzing, and assessing carobn sink, such as time continuous inventory method, space for time reference method, and limited factor analysis method as well, were expatiated finally. The final goal of this paper is to arouse the attention of academe and related sections, to promote the standardization in quantitative authentification of carbon sink, and to provide foundation for establishing methodology and technique system for accounting, reporting, authentificating, and checking of carbon sink in China.

Key words: carbon sequestration rate, method of quantitative authentification, potential increment of carbon sink, regional scale, terrestrial ecosystem