草业学报2025，Vol.34Issue(7)：41-53,13.DOI:10.11686/cyxb2024312
宁夏贺兰山东麓葡萄产区土壤有机碳库空间变异及影响因素
Spatial variation and factors influencing the soil organic carbon pool in grape-producing areas at the eastern foothills of Helan Mountain in Ningxia
摘要
Abstract
The cultivation of vineyards in arid desert grassland is not only of economic benefit,but also has a potential role in increasing the carbon sink capacity of the ecosystem.In this study,the grape-producing area on the eastern foothills of Helan Mountain in Ningxia was used as a study site.Soil samples were collected from soil layers at successive 20 cm depth increments in a 0-100 cm soil profile between May and July 2023,and the soil organic carbon(SOC)content and the total carbon content were measured.In addition,the active,neutral,and inert SOC content were also measured in the upper soil layer(0-40 cm),which is intensely disturbed by cultivation.The characteristics of SOC pools were studied for different soil types in typical vineyards using a geospatial interpolation technique and one-way ANOVA and factors influencing their variability are discussed.It was found that:1)SOC content in the 0-100 cm soil depth ranged from 3.0 to 11.1 g·kg-1 in the grape-producing area,indicating a lack of soil fertility,with an average SOC density of 52.85 t·ha-1 and moderate variability.The SOC enrichment coefficient in the upper soil layer(0-40 cm)was greater than 1,indicating a stronger carbon sequestration capacity in the upper soil layer.2)The total carbon,SOC,active SOC,and inert SOC contents in the upper soil layer(0-40 cm)were higher in the west than in the east of the grape-producing area,which was impacted by organic carbon inputs from grape cultivation and thus has significant spatial heterogeneity.3)The soil carbon pool in the grape-producing area was stable since inorganic carbon constituted 74.8%of the total carbon and inert SOC accounted for 50%of SOC,resulting in low activity of the soil carbon pool.4)Due to the different soil development scenarios,characteristics of SOC varied significantly with soil type.Although sandy soil had a SOC density higher than a sierozem soil,its SOC content was lower;sandy soil had the highest SOC density and carbon pool activity resulting in lower SOC stability.These findings provide scientific data for the carbon sink accounting and inventory of vineyard ecosystems at the eastern foothills of the Helan Mountains in Ningxia.关键词
贺兰山东麓/葡萄园/垦殖活动/土壤有机碳/碳密度Key words
east foothills of Helan Mountain/vineyards/reclamation activities/soil organic carbon/carbon density引用本文复制引用
王玉霞,杜灵通,易志远,罗霄,苏丽,乔成龙,薛斌..宁夏贺兰山东麓葡萄产区土壤有机碳库空间变异及影响因素[J].草业学报,2025,34(7):41-53,13.基金项目
宁夏重点研发计划项目(2022BEG02051,2024BEG02009)资助. （2022BEG02051,2024BEG02009）
