干旱区生态环境知识资源中心(Arid): Rewetting Intensity Influences Soil Respiration and Nitrogen Availability

Arid

DOI	10.1007/s42729-021-00509-w
	Rewetting Intensity Influences Soil Respiration and Nitrogen Availability
	Erinle, Kehinde O.; Bengtson, Per; Marschner, Petra
通讯作者	Erinle, KO (corresponding author), Univ Adelaide, Sch Agr Food & Wine, Adelaide, SA 5005, Australia.
来源期刊	JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION
ISSN	0718-9508
EISSN	0718-9516
出版年	2021
英文摘要	It is not clear how different rewetting intensities (rapid, slow or partial rewetting) influence soil respiration and nitrogen (N) availability. Moist soil left unamended or amended with low C/N faba bean residue and incubated for 21 days was dried to <5% WHC within 3 days. After 14 days of incubation, dry soils were rewetted to 50% water holding capacity (WHC), once within few seconds (rapid), by two applications at 25% WHC each, with 6-h interval between rewetting events (slow), or single application at 25% WHC (partial). The soils were further incubated for another 14 days. One day after rewetting in unamended and amended soils, respiration rate followed the order slow > rapid > partial rewetting. From day 4 onwards, moisture treatments differed little in respiration rate. In unamended soils, the rewetting intensity had little effect on available N. But 1 day after rewetting, MBN was lowest in CM, and twofold, fourfold and tenfold higher with rapid, slow and partial rewetting, respectively. In amended soils 1 day after rewetting, available N was about twofold higher in CM and with rapid than slow and partial rewetting, while MBN was about twofold higher with CM and rapid rewetting than slow and partial rewetting. Treatments differed little in available N and MBN 7 and 14 days after rewetting. Slow rewetting induced greater soil respiration and microbial N uptake than rapid rewetting. But effects were short-lived.
英文关键词	Crop residues Cumulative respiration Drying-rewetting Microbial biomass N N mineralisation
类型	Article ; Early Access
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000651678000001
WOS关键词	MICROBIAL COMMUNITY ; PRECIPITATION PULSES ; SONORAN DESERT ; CO2 FLUX ; P POOLS ; CARBON ; RESPONSES ; PHOSPHORUS ; MINERALIZATION ; DROUGHT
WOS类目	Plant Sciences ; Environmental Sciences ; Soil Science
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Agriculture
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/352351
作者单位	[Erinle, Kehinde O.; Marschner, Petra] Univ Adelaide, Sch Agr Food & Wine, Adelaide, SA 5005, Australia; [Bengtson, Per] Lund Univ, Dept Biol, Microbial Ecol Grp, Solvegatan 37, S-22362 Lund, Sweden
推荐引用方式 GB/T 7714	Erinle, Kehinde O.,Bengtson, Per,Marschner, Petra. Rewetting Intensity Influences Soil Respiration and Nitrogen Availability[J],2021.
APA	Erinle, Kehinde O.,Bengtson, Per,&Marschner, Petra.(2021).Rewetting Intensity Influences Soil Respiration and Nitrogen Availability.JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION.
MLA	Erinle, Kehinde O.,et al."Rewetting Intensity Influences Soil Respiration and Nitrogen Availability".JOURNAL OF SOIL SCIENCE AND PLANT NUTRITION (2021).