干旱区生态环境知识资源中心(Arid): Relationships between landscape features, soil properties, and vegetation determine ecological sites in a semiarid savanna of central Argentina

Arid

DOI	10.1016/j.jaridenv.2019.104038
	Relationships between landscape features, soil properties, and vegetation determine ecological sites in a semiarid savanna of central Argentina
	Frank Buss, Maria Elisa 1,2; Leizica, Emmanuel 1,2; Peinetti, Raul 2; Noellemeyer, Elke 2
通讯作者	Frank Buss, Maria Elisa
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2020
卷号	173
英文摘要	Semiarid grasslands are still managed without considering site-specific differences in productivity. A better understanding of spatial heterogeneity would improve land management and might avoid desertification in semiarid systems. We studied a toposequence in the semiarid savanna of central Argentina. By using Shuttle Radar Topography Mission (SRTM) for toposequence characterization, and radar images to identify a site with small area, we differentiated four ecological sites (ESs): valley floor, slope, plateau and deflation pits. Plateau presented the shallowest soil because of caliche layer present, while valley floor and deflation pit had the deepest CaCO3 accumulation. Moreover, valley floor had the thinnest A horizon (6.7 cm) while deflation pit had the thickest one (26.3 cm). Slope and deflation pit showed the highest organic matter (OM) contents (about 32 g kg(-1)). Total woody plant density was greater in slope and lower in valley floor. Plateau had higher shrubby Prosopis spp. density, and deflation pits higher tree Prosopis spp. density. Besides, we found a positive linear regression between OM content and woody plant cover, and an exponential relation between CaCO3 depth and shrub density. Chosen indicators explained ES variation, and the methodology allows to create ES maps and prescribe management strategies according to site limitations.
英文关键词	A horizon thickness CaCO3 depth Organic matter Remote sensing Soil depth Woody plant cover
类型	Article
语种	英语
国家	Argentina
收录类别	SCI-E
WOS记录号	WOS:000498317600013
WOS关键词	TRANSITION MODELS ; FOREST PATCHES ; STATE ; DYNAMICS ; SCALE ; CLASSIFICATION ; RESTORATION ; TEXTURE ; QUALITY ; COVER
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
EI主题词	2020-02-01
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/312709
作者单位	1.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina; 2.Univ Nacl La Pampa, Fac Agron, Ruta 35 Km 334, RA-6300 Santa Rosa, La Pampa, Argentina
推荐引用方式 GB/T 7714	Frank Buss, Maria Elisa,Leizica, Emmanuel,Peinetti, Raul,et al. Relationships between landscape features, soil properties, and vegetation determine ecological sites in a semiarid savanna of central Argentina[J],2020,173.
APA	Frank Buss, Maria Elisa,Leizica, Emmanuel,Peinetti, Raul,&Noellemeyer, Elke.(2020).Relationships between landscape features, soil properties, and vegetation determine ecological sites in a semiarid savanna of central Argentina.JOURNAL OF ARID ENVIRONMENTS,173.
MLA	Frank Buss, Maria Elisa,et al."Relationships between landscape features, soil properties, and vegetation determine ecological sites in a semiarid savanna of central Argentina".JOURNAL OF ARID ENVIRONMENTS 173(2020).