Article Geography

Chinese Science Bulletin

, Volume 58, Issue 6, pp 662-670

First online:

Open Access This content is freely available online to anyone, anywhere at any time.

Preliminary estimation of the organic carbon pool in China’s wetlands

  • YaoMin ZhengAffiliated withState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Institute of Remote Sensing Applications, Chinese Academy Sciences and Beijing Normal University
  • , ZhenGuo NiuAffiliated withState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Institute of Remote Sensing Applications, Chinese Academy Sciences and Beijing Normal University Email author 
  • , Peng GongAffiliated withState Key Laboratory of Remote Sensing Science, Jointly Sponsored by Institute of Remote Sensing Applications, Chinese Academy Sciences and Beijing Normal UniversityMinistry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Institute for Global Change Studies, Tsinghua UniversityDepartment of Environmental Science, Policy and Management, University of California Email author 
  • , YongJiu DaiAffiliated withCollege of Global Change and Earth System Science, Beijing Normal University
  • , Wei ShangguanAffiliated withCollege of Global Change and Earth System Science, Beijing Normal University

Abstract

Accurate estimation of wetland carbon pools is a prerequisite for wetland resource conservation and implementation of carbon sink enhancement plans. The inventory approach is a realistic method for estimating the organic carbon pool in China’s wetlands at the national scale. An updated data and inventory approach were used to estimate the amount of organic carbon stored in China’s wetlands. Primary results are as follows: (1) the organic carbon pool of China’s wetlands is between 5.39 and 7.25 Pg, accounting for 1.3%–3.5% of the global level; (2) the estimated values and percentages of the organic carbon contained in the soil, water and vegetation pools in China’s wetlands are 5.04–6.19 Pg and 85.4%–93.5%, 0.22–0.56 Pg and 4.1%–7.7%, 0.13–0.50 Pg and 2.4%–6.9%, respectively. The soil organic carbon pool of China’s wetlands is greater than our previous estimate of 3.67 Pg, but is lower than other previous estimates of 12.20 and 8–10 Pg. Based on the discussion and uncertainty analysis, some research areas worthy of future attention are presented.

Keywords

wetland carbon pool inventory approach remote sensing soil carbon density wetland vegetation