干旱区生态环境知识资源中心(Arid): Exploring the distribution of soil properties across an open-grazed pastoral system in Laikipia rangelands, Kenya

Arid

DOI	10.1080/15324982.2022.2039976
	Exploring the distribution of soil properties across an open-grazed pastoral system in Laikipia rangelands, Kenya
	Kamiri, Hellen W.; Mutuku, Daisy; Ndufa, James; Kiama, Stephen
通讯作者	Kamiri, HW (corresponding author)，Karatina Univ, Sch Agr & Biotechnol, Dept Agr Sci, POB 1957, Karatina 10101, Kenya.
来源期刊	ARID LAND RESEARCH AND MANAGEMENT
ISSN	1532-4982
EISSN	1532-4990
出版年	2022-02
英文摘要	Laikipia rangelands in Kenya are among the most productive ecosystems but there is concern that the traditional free grazing regimes may accelerate soil and vegetation deterioration. We investigated the distribution of soil properties in the rangelands of Ilmotiok ranch in Laikipia County where grazing is predominantly open or free and examined selected soil chemical properties and particle size distribution in three types of habitats (tree, grass and bare ground) along four transects, placed diagonally across hillslope positions. We focused our study on the hypotheses that habitat types and hillslope position had an effect on soil properties distribution along the profile. Along each identified transect, soil samples were collected at four depths 0-10, 10-20, 20-30 and 30-40 cm. Distribution of soil properties mainly carbon, total nitrogen and phosphorus were influenced by hillslope position and habitat type and their contents decreased gradually with soil depth. Soil organic carbon content was high in tree habitats while in grass habitats average total phosphorus content in the profiles was slightly lower than in tree habitats. Total soil nitrogen was highest in the footslope in the tree and grass habitat and ranged between 0.81-2.17 g/kg and 1.26-2.50 g/kg, respectively. Sand was the dominant grain size fraction which accounted for 50-88%. This study demonstrated that there are soil fertility differences in the rangelands caused by vegetation cover and hillslope positions which are particularly important for future agro-pastoral use decisions.
英文关键词	Agro-pastoral system habitat type hillslope semi-arid area soil attributes
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000755427600001
WOS关键词	LAND-USE ; GRAZING INTENSITY ; ORGANIC-CARBON ; NITROGEN ; VEGETATION ; NUTRIENTS ; IMPACTS ; EROSION ; COVER
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/377288
作者单位	[Kamiri, Hellen W.; Mutuku, Daisy] Karatina Univ, Sch Agr & Biotechnol, Dept Agr Sci, POB 1957, Karatina 10101, Kenya; [Ndufa, James; Kiama, Stephen] Kenya Forestry Res Inst KEFRI, Nairobi, Kenya
推荐引用方式 GB/T 7714	Kamiri, Hellen W.,Mutuku, Daisy,Ndufa, James,et al. Exploring the distribution of soil properties across an open-grazed pastoral system in Laikipia rangelands, Kenya[J],2022.
APA	Kamiri, Hellen W.,Mutuku, Daisy,Ndufa, James,&Kiama, Stephen.(2022).Exploring the distribution of soil properties across an open-grazed pastoral system in Laikipia rangelands, Kenya.ARID LAND RESEARCH AND MANAGEMENT.
MLA	Kamiri, Hellen W.,et al."Exploring the distribution of soil properties across an open-grazed pastoral system in Laikipia rangelands, Kenya".ARID LAND RESEARCH AND MANAGEMENT (2022).