干旱区生态环境知识资源中心(Arid): Soil extracellular enzyme stoichiometry reflects the unique habitat of karst tiankeng and helps to alleviate the P-limitation of soil microbes

Arid

DOI	10.1016/j.ecolind.2022.109552
	Soil extracellular enzyme stoichiometry reflects the unique habitat of karst tiankeng and helps to alleviate the P-limitation of soil microbes
	Jiang, Cong; Zhu, Biao; Zeng, Hui
通讯作者	Zeng, H
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2022
卷号	144
英文摘要	Soil microbial resource limitation is an important indicator of the ecosystem function and process, especially the response mechanism of the ecosystem under global change. Known as an oasis in the degraded karst landscape, the microbial resource limitations of the karst tiankeng ecosystem are still unclear. In this study, the soil extracellular enzyme activities (EEAs) and stoichiometry (EES) related to carbon (C), nitrogen (N), and phosphorus (P) acquisition were assayed in karst tiankeng. Soil samples were collected from the sunny slope of tiankeng (TSU), the shady slope of tiankeng (TSH), the base of tiankeng (TB), and outside tiankeng (OT). The results showed that the soil enzymatic acquisition of C: N: P in karst tiankeng was deviated by 1: 1: 1, indicating that the stoichiometry of soil enzymes in karst tiankeng was in an unstable state. Soil microbial communities in karst tiankeng were limited by soil C and P, which were mainly achieved by altering soil nutrient stoichiometry. At the TSH site, soil microbes were minimally limited by C and P. The P-limitation was more evident outside karst tiankeng than inside karst tiankeng. These results showed that the unique habitat of karst tiankeng can alleviate microbial community P-limitation in karst land. This study highlights the characteristics of karst tiankeng ecosystems and their role in maintaining microbial survival and ecological function in karst fragile ecosystems.
英文关键词	Karst tiankeng Ecoenzymatic stoichiometry Nutrient limitation Fragile ecosystems Topography
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:000878693700002
WOS关键词	ECOENZYMATIC STOICHIOMETRY ; NUTRIENT LIMITATION ; VEGETATION RESTORATION ; ORGANIC-CARBON ; RHIZOSPHERE ; ACQUISITION ; GRASSLAND ; BIOMASS
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/2XILL650/392350
推荐引用方式 GB/T 7714	Jiang, Cong,Zhu, Biao,Zeng, Hui. Soil extracellular enzyme stoichiometry reflects the unique habitat of karst tiankeng and helps to alleviate the P-limitation of soil microbes[J],2022,144.
APA	Jiang, Cong,Zhu, Biao,&Zeng, Hui.(2022).Soil extracellular enzyme stoichiometry reflects the unique habitat of karst tiankeng and helps to alleviate the P-limitation of soil microbes.ECOLOGICAL INDICATORS,144.
MLA	Jiang, Cong,et al."Soil extracellular enzyme stoichiometry reflects the unique habitat of karst tiankeng and helps to alleviate the P-limitation of soil microbes".ECOLOGICAL INDICATORS 144(2022).