干旱区生态环境知识资源中心(Arid): Effects of phytochemical crusts formed under two desert shrubs on physical properties of soils in arid ecosystems

Arid

DOI	10.1016/j.jaridenv.2022.104791
	Effects of phytochemical crusts formed under two desert shrubs on physical properties of soils in arid ecosystems
	Rajnoch, G.; Perez, D. R.; Ravetta, D. A.
通讯作者	Rajnoch, G
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2022
卷号	204
英文摘要	Xerophytic shrubs are usually dominant in arid environments. Because of environmental pressures both biotic and abiotic, many plants have developed a huge diversity of carbon based secondary metabolites (CBSM). Several functions have been found for these CBSM, although their fate after being released is not clear. One of the hypothesis, tested here, is that CBSM accumulate in the soil under the plant's canopy. Particularly, we tested the hypothesis that terpene and polyphenolic resins present in Grindelia chiloensis (Asteraceae) and Larrea divaricata (Zigophyllaceae) would accumulate in the soil under their canopies and change its physical properties. Our results show that resins accumulate in the soil, and increase hardiness and hydrophobicity, while they reduce water infiltration. These changes in soil properties, compared to non-CBSM producing shrubs and bare soil, were more evident close to the plants' center and decreased towards the edge and surrounding soil. As they alter water dynamics, chemical crusts may have consequences both to the individual plant and to the ecosystem, and should be present in other arid lands, outside Patagonia.
英文关键词	Carbon based secondary metabolites (CBSM) soil hydrophobicity Water infiltration Patagonia Grindelia Larrea
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000818473100003
WOS关键词	REPELLENT SANDY SOIL ; GRINDELIA-CHILOENSIS ; WATER REPELLENCY ; NITROGEN MINERALIZATION ; VEGETATION PATCHES ; BIOMASS PRODUCTION ; FERTILE ISLANDS ; MONTE ; DYNAMICS ; PATTERNS
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/393300
推荐引用方式 GB/T 7714	Rajnoch, G.,Perez, D. R.,Ravetta, D. A.. Effects of phytochemical crusts formed under two desert shrubs on physical properties of soils in arid ecosystems[J],2022,204.
APA	Rajnoch, G.,Perez, D. R.,&Ravetta, D. A..(2022).Effects of phytochemical crusts formed under two desert shrubs on physical properties of soils in arid ecosystems.JOURNAL OF ARID ENVIRONMENTS,204.
MLA	Rajnoch, G.,et al."Effects of phytochemical crusts formed under two desert shrubs on physical properties of soils in arid ecosystems".JOURNAL OF ARID ENVIRONMENTS 204(2022).