干旱区生态环境知识资源中心(Arid): Fine-scale effect of karst rock outcrops on adjacent soil and plant communities in Southwest China

Arid

DOI	10.1016/j.catena.2022.106592
	Fine-scale effect of karst rock outcrops on adjacent soil and plant communities in Southwest China
	Shen, You Xin; Wang, Qing He; Zhao, Zhi Meng; Yuan, Chuang
通讯作者	Shen, YX
来源期刊	CATENA
ISSN	0341-8162
EISSN	1872-6887
出版年	2022
卷号	219
英文摘要	Rock outcrops (ROCs) are common structures in terrestrial ecosystems, particularly in regions characterised by karst-type landscapes. However, their effects on adjacent soil and plant communities have rarely been studied. In this study, soil physical and chemical parameters and plant biomass along distances adjacent to ROCs were investigated and compared to evaluate their effects on the surrounding environment. Thirty isolated ROCs were randomly selected from semi-humid karst grasslands in Southwest China. Rainfall and ROC runoff were collected for chemical analyses. The soil physical and chemical parameters as well as the aboveground and belowground biomass (AGB and BGB, respectively) of plants were determined at 0-30, 31-60, 61-90, 91-190, and 191-290 cm intervals, adjacent to the ROC rock-soil interface. The pH and total organic carbon and Ca contents were higher but P and K contents were lower in ROC runoff than in rainwater. A few of the soil physical and chemical parameters were significantly high in samples at 0-30 cm and corresponded with the contents in runoff. The AGB and BGB in the 0-30 cm and 31-60 cm plots were significantly higher than those located at a greater distance and correlated to the size parameters of ROCs. The maximum effective distance of ROCs was approximately 75 cm. Plant biomass increased sharply in the 0-30 cm and 31-60 cm plots, with an increase in coverage in the range of 0.7 and 1.3 m2. Our findings suggest that karst ROCs affect the physical and chemical parameters of soil and adjacent plant biomass significantly on fine scales, and these effects are correlated with the size parameters associated with ROCs, such as coverage area.
英文关键词	Karst Rock outcrop Runoff Soil parameters Plant biomass
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000855189000004
WOS关键词	HETEROGENEITY ; WATER ; DESERTIFICATION ; MORPHOLOGY ; VEGETATION ; FRAGMENTS ; RUNOFF ; CREATE
WOS类目	Geosciences, Multidisciplinary ; Soil Science ; Water Resources
WOS研究方向	Geology ; Agriculture ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/392119
推荐引用方式 GB/T 7714	Shen, You Xin,Wang, Qing He,Zhao, Zhi Meng,et al. Fine-scale effect of karst rock outcrops on adjacent soil and plant communities in Southwest China[J],2022,219.
APA	Shen, You Xin,Wang, Qing He,Zhao, Zhi Meng,&Yuan, Chuang.(2022).Fine-scale effect of karst rock outcrops on adjacent soil and plant communities in Southwest China.CATENA,219.
MLA	Shen, You Xin,et al."Fine-scale effect of karst rock outcrops on adjacent soil and plant communities in Southwest China".CATENA 219(2022).