文献类型：期刊文献

英文题名：Assessing Soil Carbon Components and 14C to Optimize Land Use for Carbon Sequestration in the Chinese Loess Plateau

作者：Liu, Hao Chen, Xiaocao Gong, Tingjun Yu, Xia Wang, Jingfu Cheng, Peng An, Yanling

第一作者：Liu, Hao

通信作者：Yu, X[1];Yu, X[2];Yu, X[3];Yu, X[4]

机构：[1]Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang 550003, Peoples R China;[2]Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550001, Peoples R China;[3]Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100049, Peoples R China;[4]Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Sci, Xian 710061, Peoples R China;[5]Shaanxi Key Lab Accelerator Mass Spectrometry Tech, Xian 710061, Peoples R China

第一机构：贵州理工学院资源与环境工程学院

通信机构：corresponding author), Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang 550003, Peoples R China;corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang 550001, Peoples R China;corresponding author), Chinese Acad Sci, Inst Earth Environm, State Key Lab Loess Sci, Xian 710061, Peoples R China;corresponding author), Shaanxi Key Lab Accelerator Mass Spectrometry Tech, Xian 710061, Peoples R China.|贵州理工学院资源与环境工程学院;贵州理工学院;

年份：2025

卷号：11

外文期刊名：ECOSYSTEM HEALTH AND SUSTAINABILITY

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001624936000001)】；

基金：This work was financially supported by the Strategic Pilot Project (Class B) of the Chinese Academy of Sciences (No. XDB4000000), the Open Fund of State Key Laboratory of Loess and Quaternary Geology (No. SKLLQG2036), the Guizhou Provincial Science and Technology Support Program (No. QianKeHeJiChu-ZK [2024] YiBan511), and the Research Initiation Program for High-level Talents of Guizhou Institute of Technology in 2023 (No. 2023GCC082).

语种：英文

摘要：The Chinese Loess Plateau has approached a critical threshold in vegetation restoration, requiring optimized land-use strategies for sustainable ecosystem management. This study examines soil organic carbon (SOC) content and associated soil properties across 0 to 500 cm soil profiles under 4 land-use types (grassland, shrubland, forestland, and cropland) in the Gutun Basin. SOC dynamics were assessed using acid-soluble carbon (F1) and carbon components extracted at combustion temperatures of 25 to 400 degrees C (F2), 400 to 600 degrees C (F3), and 600 to 900 degrees C (F4). Based on 14C ages, F1 to F3 were classified as labile components, whereas F4 was considered nonlabile. Although cropland exhibited the highest SOC stock (0.88 +/- 0.38 kg m-2), it also had the highest proportion of nonlabile carbon (75%). The similar 14C ages of deep-soil carbon components in shrubland and forestland, along with higher carbon content in deep layers, suggested that carbon sequestration could occur at depths of at least 300 to 500 cm. However, soil water content (SWC) in shrubland and forestland was significantly lower (93.71 +/- 44.94 and 71.15 +/- 17.62 g kg-1, respectively), and forestland exhibited lower SOC content (1.77 +/- 0.56 g kg-1). Among all land-use types, grassland had a significantly higher SOC content (3.96 +/- 2.56 g kg-1), a greater proportion of labile carbon (77%), and a higher SWC (132.06 +/- 21.71 g kg-1), suggesting that it was the most suitable land-use type in this context.