中国地理科学 ›› 2018, Vol. 28 ›› Issue (6): 973-985.doi: 10.1007/s11769-018-1006-y

• 论文 • 上一篇    下一篇

Impacts of Land Cover Changes on Ecosystem Carbon Stocks Over the Transboundary Tumen River Basin in Northeast Asia

XIANG Hengxing1,2, JIA Mingming1, WANG Zongming1, LI Lin1,3, MAO Dehua1, ZHANG Da2, CUI Guishan2,4, ZHU Weihong2,4,5   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. College of Science, Yanbian University, Yanji 133002, China;
    3. Department of Earth Sciences, Indiana University-Purdue University, Indianapolis 420, USA;
    4. Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules(Yanbian University), Ministry of Education, Yanji 133002, China;
    5. Jilin Province Joint Key Laboratory of Changbai Mountain Wetland & Ecological, Yanji 133002, China
  • 收稿日期:2018-03-30 修回日期:2018-06-26 出版日期:2018-12-27 发布日期:2018-11-01
  • 通讯作者: JIA Mingming,E-mail:jiamingming@iga.ac.cn;ZHU Weihong.E-mail:whzhu@ybu.edu.cn E-mail:jiamingming@iga.ac.cn;whzhu@ybu.edu.cn
  • 基金资助:

    Under the auspices of the National Key Research and Development Project (No. 2016YFA0602301), National Natural Science Foundation of China (No. 41730643, 41671219, 41771109, 31500400)

Impacts of Land Cover Changes on Ecosystem Carbon Stocks Over the Transboundary Tumen River Basin in Northeast Asia

XIANG Hengxing1,2, JIA Mingming1, WANG Zongming1, LI Lin1,3, MAO Dehua1, ZHANG Da2, CUI Guishan2,4, ZHU Weihong2,4,5   

  1. 1. Key Laboratory of Wetland Ecology and Environment, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Changchun 130102, China;
    2. College of Science, Yanbian University, Yanji 133002, China;
    3. Department of Earth Sciences, Indiana University-Purdue University, Indianapolis 420, USA;
    4. Key Laboratory of Natural Resources of Changbai Mountain & Functional Molecules(Yanbian University), Ministry of Education, Yanji 133002, China;
    5. Jilin Province Joint Key Laboratory of Changbai Mountain Wetland & Ecological, Yanji 133002, China
  • Received:2018-03-30 Revised:2018-06-26 Online:2018-12-27 Published:2018-11-01
  • Contact: JIA Mingming,E-mail:jiamingming@iga.ac.cn;ZHU Weihong.E-mail:whzhu@ybu.edu.cn E-mail:jiamingming@iga.ac.cn;whzhu@ybu.edu.cn
  • Supported by:

    Under the auspices of the National Key Research and Development Project (No. 2016YFA0602301), National Natural Science Foundation of China (No. 41730643, 41671219, 41771109, 31500400)

摘要:

Understanding the effects of land cover changes on ecosystem carbon stocks is essential for ecosystem management and environmental protection, particularly in the transboundary region that has undergone marked changes. This study aimed to examine the impacts of land cover changes on ecosystem carbon stocks in the transboundary Tumen River Basin (TTRB). We extracted the spatial information from Landsat Thematic Imager (TM) and Operational Land Imager (OLI) images for the years 1990 and 2015 and obtained convincing estimates of terrestrial biomass and soil carbon stocks with the InVEST model. The results showed that forestland, cropland and built-up land increased by 57.5, 429.7 and 128.9 km2, respectively, while grassland, wetland and barren land declined by 24.9, 548.0 and 43.0 km2, respectively in the TTRB from 1990 to 2015. The total carbon stocks encompassing aboveground, belowground, soil and litter layer carbon storage pools have declined from 831.48 Tg C in 1990 to 831.42 Tg C in 2015 due to land cover changes. In detail, the carbon stocks decreased by 3.13 Tg C and 0.44 Tg C in Democratic People's Republic of Korea (North Korea) and Russia, respectively, while increased by 3.51 Tg C in China. Furthermore, economic development, and national policy accounted for most land cover changes in the TTRB. Our results imply that effective wetland and forestland protection policies among China, North Korea, and Russia are much needed for protecting the natural resources, promoting local ecosystem services and regional sustainable development in the transnational area.

关键词: land cover change, carbon stock, InVEST model, Transboundary Tumen River Basin, Northeast Asia

Abstract:

Understanding the effects of land cover changes on ecosystem carbon stocks is essential for ecosystem management and environmental protection, particularly in the transboundary region that has undergone marked changes. This study aimed to examine the impacts of land cover changes on ecosystem carbon stocks in the transboundary Tumen River Basin (TTRB). We extracted the spatial information from Landsat Thematic Imager (TM) and Operational Land Imager (OLI) images for the years 1990 and 2015 and obtained convincing estimates of terrestrial biomass and soil carbon stocks with the InVEST model. The results showed that forestland, cropland and built-up land increased by 57.5, 429.7 and 128.9 km2, respectively, while grassland, wetland and barren land declined by 24.9, 548.0 and 43.0 km2, respectively in the TTRB from 1990 to 2015. The total carbon stocks encompassing aboveground, belowground, soil and litter layer carbon storage pools have declined from 831.48 Tg C in 1990 to 831.42 Tg C in 2015 due to land cover changes. In detail, the carbon stocks decreased by 3.13 Tg C and 0.44 Tg C in Democratic People's Republic of Korea (North Korea) and Russia, respectively, while increased by 3.51 Tg C in China. Furthermore, economic development, and national policy accounted for most land cover changes in the TTRB. Our results imply that effective wetland and forestland protection policies among China, North Korea, and Russia are much needed for protecting the natural resources, promoting local ecosystem services and regional sustainable development in the transnational area.

Key words: land cover change, carbon stock, InVEST model, Transboundary Tumen River Basin, Northeast Asia