中国地理科学 ›› 2017, Vol. 27 ›› Issue (2): 188-200.doi: 10.1007/s11769-017-0858-x

• 论文 • 上一篇    下一篇

Effects of Vegetation Restoration on Soil Organic Carbon in China: A Meta-analysis

GONG Li1,2, LIU Guohua1,2, WANG Meng1,2, YE Xin1,2, WANG Hao1,2, LI Zongshan1   

  1. 1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • 收稿日期:2016-07-12 修回日期:2016-11-17 出版日期:2017-04-27 发布日期:2017-03-07
  • 通讯作者: LIU Guohua.E-mail:ghliu@rcees.ac.cn E-mail:ghliu@rcees.ac.cn
  • 基金资助:

    Under the auspices of Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA05060104)

Effects of Vegetation Restoration on Soil Organic Carbon in China: A Meta-analysis

GONG Li1,2, LIU Guohua1,2, WANG Meng1,2, YE Xin1,2, WANG Hao1,2, LI Zongshan1   

  1. 1. State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China;
    2. University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2016-07-12 Revised:2016-11-17 Online:2017-04-27 Published:2017-03-07
  • Contact: 10.1007/s11769-017-0858-x E-mail:ghliu@rcees.ac.cn
  • Supported by:

    Under the auspices of Strategic Priority Research Program of Chinese Academy of Sciences (No. XDA05060104)

摘要:

Vegetation restoration has been proposed as an effective method for increasing both plant biomass and soil carbon (C) stocks. In this study, 204 publications (733 observations) were analyzed, focusing on the effects of vegetation restoration on soil organic carbon (SOC) in China. The results showed that SOC was increased by 45.33%, 24.43%, 30.29% and 27.98% at soil depths of 0-20 cm, 20-40 cm, 40-60 cm and > 60 cm after vegetation restoration, respectively. Restoration from both cropland and non-cropland increased the SOC content. The conversion of non-cropland was more efficient in SOC accumulation than the conversion of cropland did, especially in >40 cm layers. In addition, the conversion to planted forest led to greater SOC accumulation than that to other land use did. Conversion period and initial SOC content extended more influence on soil C accumulation as the main factors after vegetation restoration than temperature and precipitation did. The SOC content significantly increased with restoration period after long-term vegetation restoration (>40 yr), indicating a large potential for further accumulation of carbon in the soil, which could mitigate climate change in the near future.

关键词: soil carbon content, vegetation restoration, land-use change, conversion period, restoration approach, China

Abstract:

Vegetation restoration has been proposed as an effective method for increasing both plant biomass and soil carbon (C) stocks. In this study, 204 publications (733 observations) were analyzed, focusing on the effects of vegetation restoration on soil organic carbon (SOC) in China. The results showed that SOC was increased by 45.33%, 24.43%, 30.29% and 27.98% at soil depths of 0-20 cm, 20-40 cm, 40-60 cm and > 60 cm after vegetation restoration, respectively. Restoration from both cropland and non-cropland increased the SOC content. The conversion of non-cropland was more efficient in SOC accumulation than the conversion of cropland did, especially in >40 cm layers. In addition, the conversion to planted forest led to greater SOC accumulation than that to other land use did. Conversion period and initial SOC content extended more influence on soil C accumulation as the main factors after vegetation restoration than temperature and precipitation did. The SOC content significantly increased with restoration period after long-term vegetation restoration (>40 yr), indicating a large potential for further accumulation of carbon in the soil, which could mitigate climate change in the near future.

Key words: soil carbon content, vegetation restoration, land-use change, conversion period, restoration approach, China