文献类型：期刊文献

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

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

第一作者：Hao Liu

机构：[1]College of Resources and Environmental Engineering,Guizhou Institute of Technology,Guiyang 550003,China;[2]State Key Laboratory of Environmental Geochemistry,Institute of Geochemistry,Chinese Academy of Sciences,Guiyang 550001,China;[3]University of Chinese Academy of Sciences,College of Resources and Environment,Beijing 100049,China;[4]State Key Laboratory of Loess Science,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China;[5]Shaanxi Key Laboratory of Accelerator Mass Spectrometry Technology and Application,Xi’an 710061,China

第一机构：贵州理工学院资源与环境工程学院

年份：2025

期号：6

起止页码：3-11

中文期刊名：Ecosystem Health and Sustainability

外文期刊名：生态系统健康与可持续性(英文)

基金：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);the Research Initiation Program for High-level Talents of Guizhou Institute of Technology in 2023(No.2023GCC082)

语种：英文

中文关键词：sustainable ecosystem managementthis;Chinese Loess Plateau;soil carbon;carbon sequestration;soil organic carbon soc content;soil properties;carbon components;land use;

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°C(F2),400 to 600°C(F3),and 600 to 900°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 ^(14)C 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.