干旱区生态环境知识资源中心(Arid): Effects of Fractal Dimension and Soil Erodibility on Soil Quality in an Erodible Region: A Case Study from Karst Mountainous Areas

Arid

DOI	10.3390/f14081609
	Effects of Fractal Dimension and Soil Erodibility on Soil Quality in an Erodible Region: A Case Study from Karst Mountainous Areas
	Li, Yi; He, Xianjin; Lin, Dunmei; Wei, Pei; Zhou, Lihua; Zeng, Lian; Qian, Shenhua; Zhao, Liang; Yang, Yongchuan; Zhu, Guangyu; Kim, Choonsig
通讯作者	Zhu, GY
来源期刊	FORESTS
EISSN	1999-4907
出版年	2023
卷号	14 期号:8
英文摘要	Soil aggregate stability and soil erodibility (k) are crucial indicators of soil quality that exhibit high sensitivity to changes in soil function. Therefore, it is of great significance to explore the quantitative relationship between these indicators and soil quality for effective ecosystem monitoring and assessment. In this study, soil samples were collected from eight altitude gradients in a karst mountainous area; we analyzed 11 soil physical, chemical, and biological properties, and assessed soil quality using the minimum data set (MDS) method. The results revealed that soil aggregate stability, bulk density (BD), pH, and fungal community diversity exhibited a unimodal altitudinal pattern, whereas the soil organic carbon (SOC), total nitrogen (TN), and C:N ratio showed an increasing trend. Among the factors considered, SOC, BD, soil pH, mechanical composition, and fungal community diversity were found to explain the most variation in soil aggregate stability and soil erodibility (k). Principal component analysis (PCA) identified soil fungal community diversity, C:N ratio, coarse sand, and macro-aggregate (MA) content as highly weighted indicators for MDS. The integrated soil quality index (SQI) values, ranging from 0.30 to 0.62 across the eight altitude gradients, also exhibited a unimodal altitudinal pattern. The analysis indicated a significant linear relationship between the fractal dimension (D) and soil erodibility of the EPIC model (K-epic) with SQI, suggesting that D and K-epic can serve as alternative indicators for soil quality. These findings further enhance our understanding of the response of soil properties to altitude changes, and provide a novel method for assessing and monitoring soil quality in karst mountainous areas.
英文关键词	altitudinal gradient soil aggregate stability soil erodibility soil quality soil fungal diversity
类型	Article
语种	英语
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:001055482500001
WOS关键词	MINIMUM DATA SET ; LAND-USE CHANGE ; AGGREGATE STABILITY ; ROCKY DESERTIFICATION ; ALTITUDINAL GRADIENT ; FUNGAL COMMUNITIES ; ORGANIC-MATTER ; CARBON STOCKS ; EROSION ; PH
WOS类目	Forestry
WOS研究方向	Forestry
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/396435
推荐引用方式 GB/T 7714	Li, Yi,He, Xianjin,Lin, Dunmei,et al. Effects of Fractal Dimension and Soil Erodibility on Soil Quality in an Erodible Region: A Case Study from Karst Mountainous Areas[J],2023,14(8).
APA	Li, Yi.,He, Xianjin.,Lin, Dunmei.,Wei, Pei.,Zhou, Lihua.,...&Kim, Choonsig.(2023).Effects of Fractal Dimension and Soil Erodibility on Soil Quality in an Erodible Region: A Case Study from Karst Mountainous Areas.FORESTS,14(8).
MLA	Li, Yi,et al."Effects of Fractal Dimension and Soil Erodibility on Soil Quality in an Erodible Region: A Case Study from Karst Mountainous Areas".FORESTS 14.8(2023).