生态学报2024，Vol.44Issue(13)：5519-5531,13.DOI:10.20103/j.stxb.202311232562
退化荒漠草地恢复对土壤有机碳及其驱动因子的影响
Effects of the degraded desert grassland restoration on soil organic carbon and its driving factors
摘要
Abstract
Uncovering the patterns and underlying drivers of soil organic carbon(SOC)accumulation in response to restoration of degraded desert grasslands of Northern China can provide a scientific evidence for the effective management of degraded grasslands and the elucidation of soil carbon sequestration effects through grassland restoration.This investigation focused on the response of SOC to different stages of grassland restoration across the Ordos Plateau,which included areas of shifting sands,pre-restoration,mid-restoration,and post-restoration,at soil depths of 0-10 cm,10-20 cm,and 20-40 cm.To unravel the factors influencing SOC,a suite of statistical techniques was employed.The results indicated that:(1)Grassland restoration significantly increased SOC across all studied depths(P＜0.05).Notably,SOC increased by 8.28 times,6.44 times,and 9.46 times at 0-10 cm,10-20 cm,and 20-40 cm soil depths,respectively.(2)The accumulation of SOC at different depths was found to be influenced by various factors.Vegetation coverage and plant diversity were identified as the primary drivers of SOC accumulation at the 0-10 cm depth,while nutrient limitation,specifically soil nitrogen,played a significant role in the accumulation of SOC in deeper layers(10-20 cm and 20-40 cm),and this effect intensified with increasing soil depth.These findings offer a scientific foundation for informed restoration strategies of the degraded grasslands and furnish evidence for the promotion of soil carbon cycling through grassland restoration,contributing to the achievement of dual carbon goals.关键词
荒漠草地/多样性/土壤有机碳/恢复/驱动因子Key words
desert grassland/diversity/soil organic carbon/restoration/driving factors引用本文复制引用
安立伟,李志刚..退化荒漠草地恢复对土壤有机碳及其驱动因子的影响[J].生态学报,2024,44(13):5519-5531,13.基金项目
内蒙古民族大学教研项目(XNK2023001) （XNK2023001）
