干旱区生态环境知识资源中心(Arid): Biochar and woodchip amendments alter restoration outcomes, microbial processes, and soil moisture in a simulated semi-arid ecosystem

Arid

DOI	10.1111/rec.13100
	Biochar and woodchip amendments alter restoration outcomes, microbial processes, and soil moisture in a simulated semi-arid ecosystem
	Fehmi, Jeffrey S.1; Rasmussen, Craig 2; Gallery, Rachel E.1,3
通讯作者	Fehmi, Jeffrey S.
来源期刊	RESTORATION ECOLOGY
ISSN	1061-2971
EISSN	1526-100X
出版年	2020
卷号	28 页码:S355-S364
英文摘要	Amendments, such as woodchips or biochar, may improve success of arid and semi-arid wildland revegetation limited by unpredictable and insufficient rainfall as well as low soil water holding capacity. In an 116-day greenhouse experiment simulating a nearby savannah, response to four amendment treatments (no treatment, incorporated biochar, incorporated woodchips, and surface woodchips) was tested across two field soils (Chiricahua and Hathaway) and four simulated precipitation treatments (100, 80, 60, and 40% of average) in a replicated design. Soil type, amendment treatments, and simulated precipitation all had significant (p < 0.01) effects on aboveground biomass. The surface woodchip treatment averaged the highest biomass production of the amendment treatments (489 kg/ha) and the incorporated woodchips had the lowest (298 kg/ha). Aboveground biomass decreased with decreasing precipitation (533, 468, 350, and 216 kg/ha, respectively). Biochar amended soils averaged 5-10% higher volumetric water content than the woodchip amendments and controls through a 28-day dry down. Microbial nitrogen and phosphorus acquiring activities were higher in Hathaway soils while carbon activities were higher in Chiricahua soils. The surface woodchip treatment resulted in a different species composition than the other amendment and control treatments (p < 0.01). None of the amendment treatments ameliorated low precipitation conditions for plants. Contrary to expectations, carbon and phosphorus exoenzyme activities were highest in the lower precipitation treatments (60 and 40%) and nitrogen exoenzyme activities remained high in Hathaway soils regardless of precipitation. Surface application of woodchips increased vegetation as well as carbon and phosphorus exoenzyme activities while incorporating woodchips suppressed vegetation.
英文关键词	aboveground biomass Arizona drought exoenzyme and extracellular enzyme activities Sonoran desert volumetric water content
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000535759900001
WOS关键词	VEGETATION ESTABLISHMENT ; BRITISH-COLUMBIA ; PLANT DIVERSITY ; ENZYME-ACTIVITY ; CARBON ; GROWTH ; MANAGEMENT ; GRASSLAND ; RESPONSES ; COLORADO
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
来源机构	University of Arizona
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/319187
作者单位	1.Univ Arizona, Sch Nat Resources & Environm, POB 210137, Tucson, AZ 85721 USA; 2.Univ Arizona, Dept Environm Sci, POB 210038, Tucson, AZ 85721 USA; 3.Univ Arizona, Dept Ecol & Evolutionary Biol, POB 210088, Tucson, AZ 85721 USA
推荐引用方式 GB/T 7714	Fehmi, Jeffrey S.,Rasmussen, Craig,Gallery, Rachel E.. Biochar and woodchip amendments alter restoration outcomes, microbial processes, and soil moisture in a simulated semi-arid ecosystem[J]. University of Arizona,2020,28:S355-S364.
APA	Fehmi, Jeffrey S.,Rasmussen, Craig,&Gallery, Rachel E..(2020).Biochar and woodchip amendments alter restoration outcomes, microbial processes, and soil moisture in a simulated semi-arid ecosystem.RESTORATION ECOLOGY,28,S355-S364.
MLA	Fehmi, Jeffrey S.,et al."Biochar and woodchip amendments alter restoration outcomes, microbial processes, and soil moisture in a simulated semi-arid ecosystem".RESTORATION ECOLOGY 28(2020):S355-S364.