中南林业科技大学学报2025，Vol.45Issue(6)：147-156,10.DOI:10.14067/j.cnki.1673-923x.2025.06.015
干旱荒漠区不同林龄梭梭人工林碳储量及分配特征
Carbon storage and distribution characteristics of Haloxylon ammodendron plantations at different stand ages in arid desert areas
摘要
Abstract
[Objective]To investigate the allocation patterns of carbon storage and carbon sequestration potential in Haloxylon ammodendron plantation ecosystems at different stand ages,and to elucidate the carbon sink function of Haloxylon forests in desert regions.[Method]This study systematically analyzed ecosystem carbon stock allocation characteristics and its driving factors by using 3-30 a Haloxylon ammodendron in the Jilantai desert area.[Result]The results showed that:1)The carbon content in the branches,leaves and roots of Haloxylon ammodendron showed a trend of first increasing and then decreasing with stand ages.Stand ages had a significant impact on carbon content in various organs and soil of Haloxylon ammodendron plantations.The soil carbon content in Haloxylon ammodendron plantations had obvious vertical distribution characteristics.The soil carbon content in 3 a and 6 a Haloxylon ammodendron plantations gradually increased with soil depth,and soil carbon content in 11,16 and 30 a Haloxylon ammodendron plantations decreased with increasing soil depth;2)The biomass,carbon storage and soil carbon storage of various organs in shrub layer increase with stand age.Stand ages had a significant impact on biomass,carbon storage and soil carbon storage of various organs in the shrub layer(P<0.05).The 0-100 cm soil carbon storage ranged from 1.17 to 7.82 t·hm-2 of Haloxylon ammodendron plantations with different stand ages.The soil carbon storage of 3 a and 6 a Haloxylon ammodendron gradually increased with soil depth,and soil carbon storage of 11,16,and 30 a Haloxylon ammodendron decreased with increasing soil depth;3)The allocation proportion of Haloxylon ammodendron plantations ecosystem carbon stocks showed:soil layer>shrub layer>herb layer>litter layer,indicating that ecosystem carbon stocks were mainly concentrated in soil layer,with a carbon storage allocation ratio ranging from 84.06％to 95.73％;4)Net primary productivity and annual carbon sequestration of Haloxylon ammodendron plantations increased with stand age.Among them,net primary productivity and annual carbon sequestration of shrub layer with 3 a and 6 a Haloxylon ammodendron plantations were greater than those of herbaceous layer,and net primary productivity and annual carbon sequestration of herbaceous layer with 11,16 and 30 a Haloxylon ammodendron plantations were greater than those of shrub layer.[Conclusion]The establishment of Haloxylon ammodendron plantations in China's desert regions demonstrates significant carbon sequestration potential.The carbon storage capacity of these artificial Haloxylon ammodendron ecosystems exhibits pronounced age-dependent variation.Future assessments of carbon stocks in desert Haloxylon ammodendron plantations should therefore explicitly account for the differential impacts across stand ages.关键词
梭梭林/碳含量/碳储量/固碳能力/荒漠区Key words
Haloxylon ammodendron plantations/carbon content/carbon storage/carbon sequestration capacity/desertification areas分类
农业科技引用本文复制引用
左小锋,魏亚娟,左合君,王海兵,闫敏,孙艳丽..干旱荒漠区不同林龄梭梭人工林碳储量及分配特征[J].中南林业科技大学学报,2025,45(6):147-156,10.基金项目
国家林业和草原局揭榜挂帅项目"三北工程攻坚战关键技术研发"子课题(202401-03-01) （202401-03-01）
内蒙古农业大学高层次及优秀博士人才引进科研启动项目(NDYB2024-54) （NDYB2024-54）
包头市青年创新人才项目. （）
