干旱区生态环境知识资源中心(Arid): Soil greenhouse gas emissions from a sisal chronosequence in Kenya

Arid

DOI	10.1016/j.agrformet.2021.108465
	Soil greenhouse gas emissions from a sisal chronosequence in Kenya
	Wachiye, Sheila; Merbold, Lutz; Vesala, Timo; Rinne, Janne; Leitner, Sonja; Rasanen, Matti; Vuorinne, Ilja; Heiskanen, Janne; Pellikka, Petri
通讯作者	Wachiye, S (corresponding author), Univ Helsinki, Dept Geosci & Geog, Earth Change Observat Lab, Helsinki, Finland. ; Wachiye, S (corresponding author), Mazingira Ctr, Int Livestock Res Inst ILRI, POB 30709, Nairobi 00100, Kenya. ; Wachiye, S (corresponding author), Univ Kabianga, Sch Nat Resources & Environm Management, Kericho, Kenya.
来源期刊	AGRICULTURAL AND FOREST METEOROLOGY
ISSN	0168-1923
EISSN	1873-2240
出版年	2021
卷号	307
英文摘要	Sisal (Agave sisalana) is a climate-resilient crop grown on large-scale farms in semi-arid areas. However, no studies have investigated soil greenhouse gas (GHGs: CO2, N2O and CH4) fluxes from these plantations and how they relate to other land cover types. We examined GHG fluxes (Fs) in a sisal chronosequence at Teita Sisal Estate in southern Kenya. The effects of stand age on Fs were examined using static GHG chambers and gas chromatography for a period of one year in seven stands: young stands aged 1-3 years, mature stands aged 7-8 years, and old stands aged 13-14 years. Adjacent bushland served as a control site representing the surrounding land use type. Mean CO2 fluxes were highest in the oldest stand (56 +/- 3 mg C m(-2) h(-1)) and lowest in the 8-year old stand (38 +/- 3 mg C m(-2) h(-1)), which we attribute to difference in root respiration between the stand. All stands had 13-28% higher CO2 fluxes than bushland (32 +/- 3 mg C m(-2) h(-1)). CO2 fluxes in the wet season were about 70% higher than dry season across all sites. They were influenced by soil water content (W-S) and vegetation phenology. Mean N2O fluxes were very low (<5 mu g N m(-2) h(-1)) in all sites due to low soil nitrogen (N) content. About 89% of CH4 fluxes were below the detection limit (LOD +/- 0.02 mg C m(-2) h(-1)). Our results imply that sisal plantations have higher soil CO2 emissions than the surrounding land use type, and the seasonal emissions were largely driven by WS and the vegetation status. Methane and nitrous oxide are of minor importance. Thus, soil GHG fluxes from sisal plantations are a minor contributor to agricultural GHG emissions in Kenya.
英文关键词	Soil moisture Carbon dioxide (CO2) Nitrous oxide (N2O) Methane (CH4) Sub-Saharan Africa Land-use change, Static chamber
类型	Article
语种	英语
开放获取类型	hybrid, Green Published
收录类别	SCI-E
WOS记录号	WOS:000682515100066
WOS关键词	LAND-USE TYPES ; NITROUS-OXIDE ; SPATIAL VARIATION ; ROOT RESPIRATION ; CARBON-DIOXIDE ; METHANE FLUXES ; CO2 EFFLUX ; EXCHANGE ; N2O ; SAVANNA
WOS类目	Agronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS研究方向	Agriculture ; Forestry ; Meteorology & Atmospheric Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/362347
作者单位	[Wachiye, Sheila; Rasanen, Matti; Vuorinne, Ilja; Heiskanen, Janne; Pellikka, Petri] Univ Helsinki, Dept Geosci & Geog, Earth Change Observat Lab, Helsinki, Finland; [Wachiye, Sheila; Merbold, Lutz; Leitner, Sonja] Mazingira Ctr, Int Livestock Res Inst ILRI, POB 30709, Nairobi 00100, Kenya; [Vesala, Timo; Rasanen, Matti] Univ Helsinki, Fac Sci, Inst Atmospher & Earth Syst Res Phys, Helsinki, Finland; [Rinne, Janne] Lund Univ, Dept Phys Geog & Ecosyst Sci, Lund, Sweden; [Wachiye, Sheila] Univ Kabianga, Sch Nat Resources & Environm Management, Kericho, Kenya; [Merbold, Lutz] Agroscope, Res Div Agroecol & Environm, Reckenholzstr 191, CH-8046 Zurich, Switzerland; [Vesala, Timo] Univ Helsinki, Fac Agr & Forestry, Inst Atmospher & Earth Syst Res Forest Sci, Helsinki, Finland; [Vesala, Timo] Yugra State Univ, Khanty Mansiysk 628012, Russia
推荐引用方式 GB/T 7714	Wachiye, Sheila,Merbold, Lutz,Vesala, Timo,et al. Soil greenhouse gas emissions from a sisal chronosequence in Kenya[J],2021,307.
APA	Wachiye, Sheila.,Merbold, Lutz.,Vesala, Timo.,Rinne, Janne.,Leitner, Sonja.,...&Pellikka, Petri.(2021).Soil greenhouse gas emissions from a sisal chronosequence in Kenya.AGRICULTURAL AND FOREST METEOROLOGY,307.
MLA	Wachiye, Sheila,et al."Soil greenhouse gas emissions from a sisal chronosequence in Kenya".AGRICULTURAL AND FOREST METEOROLOGY 307(2021).