干旱区生态环境知识资源中心(Arid): Soil texture modulates the intensity of fertile islands through affecting the distribution of shrub fine roots

Arid

DOI	10.1016/j.jaridenv.2021.104503
	Soil texture modulates the intensity of fertile islands through affecting the distribution of shrub fine roots
	Cao, Yanfeng; Su, Yangui; Huang, Gang; Li, Yan
通讯作者	Cao, YF (corresponding author), Shanxi Normal Univ, Coll Geog Sci, Linfen 041000, Shanxi, Peoples R China. ; Huang, G (corresponding author), Fujian Normal Univ, Inst Geog Sci, Fuzhou 350007, Fujian, Peoples R China.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	189
英文摘要	Fertile islands play an important role in ecosystem structure and function. However, studies on the effects of fine roots of desert shrubson fertile islands in contrasting textured soils are scarce. We investigated soil water and nutrient contents, microbial biomass, fine root densities of Haloxylon ammodendron (C.A.Mey.), and their enrichment indices along a soil profile (100 cm deep and 200 cm wide) in two soils: Torripsamment (coarse-textured) and Haplocalcid (fine-textured). In both soils, water and nutrient contents, microbial biomass, and fine root densities decreased with increasing distance from the taproot. Their enrichment indices exceeded 1.0, except at the 190 cm distance from the taproot. Compared with the Haplocalcid, the Torripsamment had higher enrichment levels for all parameters, which mainly occurred at 0-20 and 20-60 cm depths. The enrichment indices of fine root densities were positively related to those of soil variables at similar depths, and the relationships were more intense in the Torripsamment than in the Haplocalcid at 0-20 and 20-60 cm depths. These results suggest that fine root distribution along the soil profile promotes fertile islands extending from the surface to deep soils. Soil texture affects fine root distribution and consequently modulates the intensity of fertile islands.
英文关键词	Fertile islands Desert shrub Fine roots Soil texture
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000647760200006
WOS关键词	ORGANIC-MATTER ; EXTRACTION METHOD ; WATER-USE ; CARBON ; STEMFLOW ; NITROGEN ; STABILIZATION ; DECOMPOSITION ; CONDUCTANCE ; MECHANISMS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	中国科学院新疆生态与地理研究所
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350701
作者单位	[Cao, Yanfeng] Shanxi Normal Univ, Coll Geog Sci, Linfen 041000, Shanxi, Peoples R China; [Su, Yangui; Huang, Gang] Fujian Normal Univ, Inst Geog Sci, Fuzhou 350007, Fujian, Peoples R China; [Li, Yan] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi 830011, Xinjiang, Peoples R China
推荐引用方式 GB/T 7714	Cao, Yanfeng,Su, Yangui,Huang, Gang,et al. Soil texture modulates the intensity of fertile islands through affecting the distribution of shrub fine roots[J]. 中国科学院新疆生态与地理研究所,2021,189.
APA	Cao, Yanfeng,Su, Yangui,Huang, Gang,&Li, Yan.(2021).Soil texture modulates the intensity of fertile islands through affecting the distribution of shrub fine roots.JOURNAL OF ARID ENVIRONMENTS,189.
MLA	Cao, Yanfeng,et al."Soil texture modulates the intensity of fertile islands through affecting the distribution of shrub fine roots".JOURNAL OF ARID ENVIRONMENTS 189(2021).