中国地理科学 ›› 2019, Vol. 20 ›› Issue (4): 601-613.doi: 10.1007/s11769-019-1058-7

• 论文 • 上一篇    下一篇

Re-assessing Vegetation Carbon Storage and Emissions from Land Use Change in China Using Surface Area

HE Qingsong1, TAN Shukui1, XIE Peng2, LIU Yaolin2, LI Jing1   

  1. 1. College of Public Administration, Huazhong University of Science & Technology, Wuhan 430074, China;
    2. School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
  • 收稿日期:2018-11-30 修回日期:2018-08-14 出版日期:2019-08-27 发布日期:2019-06-28
  • 通讯作者: LI Jing.E-mail:jl_sz@163.com E-mail:jl_sz@163.com
  • 基金资助:

    Under the auspices of the Fundamental Research Funds for the Central Universities (No. 2019kfyXJJS026, 2019QNA6024)

Re-assessing Vegetation Carbon Storage and Emissions from Land Use Change in China Using Surface Area

HE Qingsong1, TAN Shukui1, XIE Peng2, LIU Yaolin2, LI Jing1   

  1. 1. College of Public Administration, Huazhong University of Science & Technology, Wuhan 430074, China;
    2. School of Resource and Environmental Science, Wuhan University, Wuhan 430079, China
  • Received:2018-11-30 Revised:2018-08-14 Online:2019-08-27 Published:2019-06-28
  • Contact: LI Jing.E-mail:jl_sz@163.com E-mail:jl_sz@163.com
  • Supported by:

    Under the auspices of the Fundamental Research Funds for the Central Universities (No. 2019kfyXJJS026, 2019QNA6024)

摘要:

Land surface area estimation can provide basic information for accurately estimating vegetation carbon storage under complex terrain. This study selected China, a country dominated by mountains, as an example, and calculated terrestrial vegetation carbon storage (VCS) for 2000 and 2015 using land surface area and traditional ellipsoid area. The land surface area is estimated by a triangular network on the high precision digital elevation model. The results showed that:1) The VCS estimated by the surface area measurement in 2000 and 2015 were 0.676 and 0.692 Pg C (1 Pg=1015 g) higher than the VCS calculated using the ellipsoid area, respectively. 2) As the elevation increases, the differences between VCS estimated by surface area measurement and ellipsoid area measurement are expanding. Specially, a clear gap was present starting from an elevation of 500 m, with the relative error exceeds 8.99%. 3) The total amount of carbon emitted due to land use change reached 0.114 Pg C. The conversions of forestland and grassland to other land use type are the main reasons of the loss of vegetation carbon storage, resulting in a total amount of biomass carbon storage decreased by 0.942 and 0.111 Pg C, respectively. This study was a preliminary exploration of incorporating land surface area as a factor in resource estimation, which can help more accurately understand the status of resources and the environment in the region.

关键词: carbon storage, land use change, surface area, resource estimation, ellipsoidal area, China

Abstract:

Land surface area estimation can provide basic information for accurately estimating vegetation carbon storage under complex terrain. This study selected China, a country dominated by mountains, as an example, and calculated terrestrial vegetation carbon storage (VCS) for 2000 and 2015 using land surface area and traditional ellipsoid area. The land surface area is estimated by a triangular network on the high precision digital elevation model. The results showed that:1) The VCS estimated by the surface area measurement in 2000 and 2015 were 0.676 and 0.692 Pg C (1 Pg=1015 g) higher than the VCS calculated using the ellipsoid area, respectively. 2) As the elevation increases, the differences between VCS estimated by surface area measurement and ellipsoid area measurement are expanding. Specially, a clear gap was present starting from an elevation of 500 m, with the relative error exceeds 8.99%. 3) The total amount of carbon emitted due to land use change reached 0.114 Pg C. The conversions of forestland and grassland to other land use type are the main reasons of the loss of vegetation carbon storage, resulting in a total amount of biomass carbon storage decreased by 0.942 and 0.111 Pg C, respectively. This study was a preliminary exploration of incorporating land surface area as a factor in resource estimation, which can help more accurately understand the status of resources and the environment in the region.

Key words: carbon storage, land use change, surface area, resource estimation, ellipsoidal area, China