干旱区生态环境知识资源中心(Arid): Effects of soil and rock microhabitats on soil organic carbon stability in a karst peak-cluster depression region of Southwestern China

Arid

DOI	10.1016/j.geodrs.2023.e00623
	Effects of soil and rock microhabitats on soil organic carbon stability in a karst peak-cluster depression region of Southwestern China
	He, Jie; Dai, Quahou; Yi, Xingsong; Wang, Yong; Peng, Xudong; Yan, Youjin
通讯作者	Dai, QH
来源期刊	GEODERMA REGIONAL
ISSN	2352-0094
出版年	2023
卷号	32
英文摘要	The stability of soil organic carbon (SOC) has a significant impact on ecological restoration and assessment of carbon sequestration in karst regions. We investigated the SOC sequestration and stabilization in leptosols profiles (0-10, 10-20 and 20-30 cm) by combining the characteristics of microhabitats and carbon fractions. Soil samples were collected from 110 microhabitats including rocky soil surface, stone crevice, stone gully, stone cave, stone pit and soil surface. The highest C stock was observed in stone cave, with the value of 21.06 kg.m(2), 2.5 times that of the soil surface with the lowest C stock. The C content of LF and OF decreased at rocky soil surface and soil surface and increased first and then decreased at stone cave and stone pits with soil area. The largest contents of LF and OF have been found in the wide mouth hetero-dip direction stone gullies and co-dip direction stone crevice. Stone cave has the strongest C sequestration capacity, while the proportion of stable C fractions was lower than other microhabitats; SS was lower in the C sequestration capacity and higher in the proportion of stable C fractions than the rest of microhabitats. Soil area and the attitude of rock formation of submicrohabitats significantly affected C stability, and available nitrogen and saturated hydraulic conductivity could be the primary parameters affecting carbon fractions under the influence of microhabitat. Overall, the multiple factors of microhabitat and carbon characteristics should be essential for SOC stability in karst areas.
英文关键词	Rocky desertification Microhabitat Carbon fractions Carbon sequestration potential Leptosols
类型	Article
语种	英语
开放获取类型	Bronze
收录类别	SCI-E
WOS记录号	WOS:001029061100001
WOS关键词	OCCLUDED-PARTICULATE ; SPATIAL-DISTRIBUTION ; LAND-USE ; FRACTIONS ; MATTER ; EROSION ; STORAGE ; DESERTIFICATION ; NITROGEN ; TILLAGE
WOS类目	Soil Science
WOS研究方向	Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396704
推荐引用方式 GB/T 7714	He, Jie,Dai, Quahou,Yi, Xingsong,et al. Effects of soil and rock microhabitats on soil organic carbon stability in a karst peak-cluster depression region of Southwestern China[J],2023,32.
APA	He, Jie,Dai, Quahou,Yi, Xingsong,Wang, Yong,Peng, Xudong,&Yan, Youjin.(2023).Effects of soil and rock microhabitats on soil organic carbon stability in a karst peak-cluster depression region of Southwestern China.GEODERMA REGIONAL,32.
MLA	He, Jie,et al."Effects of soil and rock microhabitats on soil organic carbon stability in a karst peak-cluster depression region of Southwestern China".GEODERMA REGIONAL 32(2023).