干旱区生态环境知识资源中心(Arid): Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon

Arid

DOI	10.1016/j.ecolind.2023.110300
	Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon
	Wang, Linjiao; Wang, Ke; Sheng, Maoyin
通讯作者	Sheng, M
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2023
卷号	151
英文摘要	Organic carbon occluded in phytoliths is extremely stable and plays important roles in long-term preservation of soil and stable carbon sequestration in terrestrial ecosystems. To clarify the effects of land-use changes on the accumulation of soil phytolith-occluded organic carbon (PhytOC), the typical six land-use types of forest, open forest, shrub, grassland, corn field and abandoned farmland in Southwest China were used to study the associations of soil PhytOC accumulation with land-use change. The present results showed that land-use changes significantly affected soil PhytOC accumulation and its proportion to TSOC (total soil organic carbon). Compared to vegetation coverage, vegetation productivity increased soil PhytOC accumulation more effectively. The content and reserves of soil PhytOC in the open forest all ranked highest among the six land uses studied. Forest thinning not only substantially increased soil stable organic carbon sequestration but also obviously increased the TSOC pool. When land use changed from forest to grassland, there were obvious releases or run off of soil organic carbon, but the stability of the soil organic C pool improved obviously. After the corn field was abandoned, the PhytOC pool did not vary obviously. Soil pH was the important factor influencing the soil PhytOC pool, and acidic soils were made against PhytOC accumulation in soils. Soil PhytOC accumulation was significantly affected by soil C, N and P nutrition contents and stoichiometric ratios. Significant negative effects of bulk density on PhytOC accumulation in soils were observed. The present results are of great significance in land use regulation for increasing the soil carbon sink of terrestrial ecosystems.
英文关键词	Phytolith PhytOC C pool Response Karst
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000991014500001
WOS关键词	ROCKY-DESERTIFICATION ; BIOGENIC SILICA ; SEQUESTRATION ; NITROGEN ; IMPACT ; CHINA ; STRATEGIES ; DELTA-C-13 ; GRASSLAND ; CHEMISTRY
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/395937
推荐引用方式 GB/T 7714	Wang, Linjiao,Wang, Ke,Sheng, Maoyin. Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon[J],2023,151.
APA	Wang, Linjiao,Wang, Ke,&Sheng, Maoyin.(2023).Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon.ECOLOGICAL INDICATORS,151.
MLA	Wang, Linjiao,et al."Changes in land use are associated with the accumulation of soil phytolith-occluded organic carbon".ECOLOGICAL INDICATORS 151(2023).