水土保持学报2023，Vol.37Issue(6)：290-297,8.DOI:10.13870/j.cnki.stbcxb.2023.06.037
植被恢复对油茶园梯壁土壤团聚体及赋存有机碳的影响
Impacts of Vegetation Restoration on Soil Aggregates and Soil Organic Carbon on the Terrace Wall of Camellia Oleifera Orchard
摘要
Abstract
In order to study the relationship between terrace wall stability and vegetation succession,the terrace walls of different vegetation restoration years(2 years,5 years,10 years,and 30 years)and different vegetation restoration stages(bare land,moss,moss-grass,and moss-grass-shrub)were selected as the research objects,and soil samples of surface(0-5 cm)and subsurface(5-20 cm)were collected.The effects of restoration years and succession stages on soil aggregates and their organic carbon were analyzed.The results showed that the content of soil macroaggregates(>0.25 mm)increased with the increase of succession stage,and the proportion of macroaggregates was higher with the longer recovery years of the same succession stage,and the proportion of macroaggregates reached 91.63%in the 30 years moss-grass-scrub stage.Soil mean weight diameter(MWD)and geometric mean diameter(GMD)in 0-5 cm and 5-20 cm soil layers showed a gradual increasing trend with the increase of restoration time,with 30-year soil MWD and GMD ranging from 1.07 to 1.41 and 0.88 to 1.17 mm,respectively,and showing the characteristics of moss-grass-scrub>moss-grass>moss>bare land in different succession stages.Soil organic carbon content was significantly correlated with macroaggregates(r=0.83,p<0.001),indicating that vegetation succession and planting years had positive effects on soil carbon sequestration.Vegetation succession and vegetation recovery time can improve soil structure,stability and corrosion resistance of soil aggregates.The research results can provide theoretical reference for optimizing terrace development.关键词
植被恢复/土壤团聚体/有机碳/梯壁/油茶园Key words
vegetation restoration/soil aggregates/soil organic carbon/terraces walls/Camellia oleifera orchard分类
农业科技引用本文复制引用
吴瑾,刘窑军,郑涵,王茜,李奇,谢文斌,覃玥,段剑,李忠武..植被恢复对油茶园梯壁土壤团聚体及赋存有机碳的影响[J].水土保持学报,2023,37(6):290-297,8.基金项目
国家自然科学基金项目(U22A20611,41877084) （U22A20611,41877084）
湖南省教育厅科学研究项目(22A0036) （22A0036）
湖南省水利科技推广项目(XSKJ2022068-47) （XSKJ2022068-47）
湖南省自然科学基金项目(2022JJ30389) （2022JJ30389）
