干旱区生态环境知识资源中心(Arid): The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia

Arid

DOI	10.2989/10220119.2018.1526825
	The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia
	Nghalipo, Elise 1; Joubert, Dave 1; Throop, Heather 2,3; Groengroeft, Alexander 4
通讯作者	Nghalipo, Elise
来源期刊	AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE
ISSN	1022-0119
EISSN	1727-9380
出版年	2019
卷号	36 期号:1 页码:9-16
英文摘要	Fire is an integral part of savanna ecosystems that has shaped these systems since the Miocene. Substantial uncertainty about fire effects in semi-arid ecosystems exists. Fire may affect ecosystem productivity directly through nutrient volatilisation, increased mineralisation and altering organic matter quantity, and indirectly through altering vegetation structure. We explored the effects of fire history and vegetation patch types (tree canopy vs inter-canopy) on soil nutrients and soil organic carbon (SOC) in a semi-arid ecosystem. We collected soil samples along transects in four treatments with different fire histories (1 to 24 years since the last burn). In the statistical analyses, tree canopy and inter-canopy samples along transects were differentiated. Fire showed an inconsistent effect on soil nutrients and SOC. There was a short-term negative influence on total nitrogen, whereas phosphorus, potassium and magnesium increased in the 1-year treatment. Sodium consistently decreased with increasing time since the last burn, whereas SOC and calcium were not affected. Calcium and magnesium were significantly higher under canopy relative to inter-canopy patches. There was no significant interactive effect between fire history and vegetation patch type on soil nutrients and SOC. Management decisions regarding fire within the frequency experienced in this system appear not to necessitate concern regarding soil resource impacts.
英文关键词	cations fire intervals fire treatment sandy soils time since last burn vegetation patch types
类型	Article
语种	英语
国家	Namibia ; USA ; Germany
收录类别	SCI-E
WOS记录号	WOS:000461370900002
WOS关键词	LONG-TERM ; MATTER CONTENT ; NITROGEN ; TREES ; GRASSLAND ; ENVIRONMENTS ; VEGETATION ; LAND ; ENCROACHMENT ; MANAGEMENT
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/213922
作者单位	1.Namibia Unvers Sci & Technol, Dept Agr & Nat Resources Sci, Windhoek, Namibia; 2.Arizona State Univ, Sch Earth & Space Explorat, Tempe, AZ USA; 3.Arizona State Univ, Sch Life Sci, Tempe, AZ USA; 4.Univ Hamburg, Inst Soil Sci, Hamburg, Germany
推荐引用方式 GB/T 7714	Nghalipo, Elise,Joubert, Dave,Throop, Heather,et al. The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia[J]. Arizona State University,2019,36(1):9-16.
APA	Nghalipo, Elise,Joubert, Dave,Throop, Heather,&Groengroeft, Alexander.(2019).The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia.AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE,36(1),9-16.
MLA	Nghalipo, Elise,et al."The effect of fire history on soil nutrients and soil organic carbon in a semi-arid savanna woodland, central Namibia".AFRICAN JOURNAL OF RANGE & FORAGE SCIENCE 36.1(2019):9-16.