文献类型：期刊文献

英文题名：Effects of the Gully Land Consolidation Project on soil properties and carbon stocks of farmland in the Chinese Loess Plateau

作者：Qiu, Zeqiong Gong, Tingjun Chen, Xiaocao Yu, Xia Wu, Qixin An, Yanling Zeng, Jie

第一作者：Qiu, Zeqiong

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

机构：[1]Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang, Peoples R China;[2]Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang, Peoples R China;[3]Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, Peoples R China

第一机构：Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang, Peoples R China

通信机构：corresponding author), Guizhou Univ, Coll Resources & Environm Engn, Key Lab Karst Georesources & Environm, Minist Educ, Guiyang, Peoples R China;corresponding author), Guizhou Inst Technol, Coll Resources & Environm Engn, Guiyang, Peoples R China;corresponding author), Chinese Acad Sci, Inst Geochem, State Key Lab Environm Geochem, Guiyang, 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：13

外文期刊名：PEERJ

收录：;Scopus(收录号：2-s2.0-105008134876);WOS:【SCI-EXPANDED(收录号:WOS:001511264200001)】；

基金：We sincerely thank the editors and reviewers for their valuable comments on improving the manuscript.

语种：英文

外文关键词：Gully Land Consolidation; Soil properties; Soil carbon; Farmland management; Chinese Loess Plateau; Anthropic activities

摘要：A megaproject named Gully Land Consolidation (GLC) was implemented in the Chinese Loess Plateau (CLP) to address food shortages. However, its effects on soil properties and carbon stocks remain unclear. This study evaluates the effects of the GLC project on soil properties and carbon stocks by analyzing the properties of 14 farmland soil profiles (0-500 cm depth) in the Gutun watershed (GT-T), a typical area treated by the GLC project. Soil particle size, water content (SWC), bulk density (BD), contents of soil organic carbon (SOC), inorganic carbon (SIC), and total carbon (TC) were measured, and carbon stocks were calculated. Data from the GT-T watershed were compared to untreated areas in the CLP (CLP-U) and outside the CLP (Other-U). The results showed that the silt proportion (76.0%), SWC (17.7 +/- 5.2%), and BD (1.5 +/- 0.2 g cm(-3)) in the 0-500 cm depth in the GT-T watershed was 1.1 to 2.1 times, 1.6 to 2.8 times, and 1.0 to 1.3 times higher than in untreated areas, respectively. However, the SOC stock (2.5 kg m(-2)) at 0-100 cm depth was 0.7 to 10.2 kg m(-2) lower than in the untreated areas. These results indicate that although the GLC project can improve soil structure and water retention capacity, it may also lead to the loss of surface SOC, thereby reducing soil fertility. The protection and replenishment of surface SOC should be emphasized during the cultivation and management of the newly reclaimed farmland in GLC-treated areas. This study highlights the effects of the GLC project on soil properties and carbon stocks and provides valuable insights for optimizing land reclamation management in the CLP.