干旱区生态环境知识资源中心(Arid): Assessment of Stand Types for Phosphorus Acquisition and Internal Utilization Efficiency in a Desert Plant Blepharis sindica (T. Andres.)

Arid

DOI	10.1134/S2079096115020079
	Assessment of Stand Types for Phosphorus Acquisition and Internal Utilization Efficiency in a Desert Plant Blepharis sindica (T. Andres.)
	Mathur, Manish
通讯作者	Mathur, M
来源期刊	ARID ECOSYSTEMS
ISSN	2079-0961
EISSN	2079-0988
出版年	2015
卷号	5 期号:2 页码:102-111
英文摘要	Impact of stand types (monoculture and polyculture) on phosphorus acquisition efficiency and their subsequent internal utilization efficiency were determined at species level, in a seratonious arid endangered plant, Blepharis sindica. At pure stand phosphorus acquisition efficiency (PAE) was recorded higher during pulse event (rain) while at mixed stand it was recorded more during non-pulse event (summer). This indicates that at pure stand this species rapidly full-fill their P demand during high soil P availability (pulse event), but at mixed stand due to presence of other life forms this species have adjusted their P acquisition efficiency during non-pulse (low soil P), when other associate probably not able to do this. Ordination analysis shows lack of correlation between PAE and PUTIL, indicates that selection of one of these should not affect the other. Regression analysis between P variables and community factors revealed that at species level dominance of B. sindica reflects with its higher P acquisition efficiency; however as the community diversity (Richness, Shannon and Weaver index and evenness) increases the P internal utilization and PUE were inhibited. Thus it can be concluded that both P internal utilization and PUE of B. sindica are largely influenced with temporal factors (Increase and decrease of community diversity during pulse and non-pulse events, respectively). This plant achieved their effective nutrient use through temporal partitioning, through which it full-fill their P requirements during low resource availability (non-pulse event). Both soil organic carbon and carbon to nitrogen ratio supports PAE in linear fashions. Similarly soil pH also monotonically supports PAE, while soil organic carbon monotonically inhibits QUTIL. The greater nutrient uptake and uptake efficiency in a pure stand reflects narrow niche width of B. sindica and hence it can be conclude that the impact of life-form diversity on nutrient use efficiency is not a static phenomenon.
英文关键词	nutrient use efficiency ecosystem level species level ordination species diversity plant and soil factors
类型	Article
语种	英语
收录类别	ESCI
WOS记录号	WOS:000218922100008
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	ICAR Central Arid Zone Research Institute
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/331090
作者单位	[Mathur, Manish] IUCN, Commiss Ecosyst Management, Jodhpur 342008, Rajasthan, India
推荐引用方式 GB/T 7714	Mathur, Manish. Assessment of Stand Types for Phosphorus Acquisition and Internal Utilization Efficiency in a Desert Plant Blepharis sindica (T. Andres.)[J]. ICAR Central Arid Zone Research Institute,2015,5(2):102-111.
APA	Mathur, Manish.(2015).Assessment of Stand Types for Phosphorus Acquisition and Internal Utilization Efficiency in a Desert Plant Blepharis sindica (T. Andres.).ARID ECOSYSTEMS,5(2),102-111.
MLA	Mathur, Manish."Assessment of Stand Types for Phosphorus Acquisition and Internal Utilization Efficiency in a Desert Plant Blepharis sindica (T. Andres.)".ARID ECOSYSTEMS 5.2(2015):102-111.

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