干旱区生态环境知识资源中心(Arid): Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils

Arid

DOI	10.1111/rec.13165
	Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils
	Espinosa, Noelle J.1; Moore, David J. P.1; Rasmussen, Craig 2; Fehmi, Jeffrey S.1; Gallery, Rachel E.1,3
通讯作者	Espinosa, Noelle J.
来源期刊	RESTORATION ECOLOGY
ISSN	1061-2971
EISSN	1526-100X
出版年	2020
卷号	28 页码:S381-S392
英文摘要	Restoration presents a global challenge in drylands (arid and semiarid ecosystems) where uses can range from exclusive conservation to open-pit mining and restoration practices are constrained by scarce, unpredictable precipitation, and high ambient temperatures. Adding woodchip amendments to soils is a common strategy for mitigating soil degradation as amendments may enhance soil carbon and increase plant cover. We assessed the effect of surface or incorporated woodchip addition and incorporated wood-derived biochar on soil carbon dynamics and microbial activities as well as plant cover in semiarid soils that had been removed and replaced. We found that woodchips at the soil surface increased soil organic carbon (SOC), and both surface and incorporated woodchips increased the dissolved organic carbon (DOC) content. The incorporation of woodchips inhibited plant cover yet increased soil CO2 efflux and dissolved organic matter stoichiometry. Surface woodchips also significantly enhanced microbial activities but not plant cover. A significant amount of the soil efflux in response to incorporating woodchips was explained by plant cover and exoenzyme activities, but this was not the case for other amendment treatments. Biochar, thought to be more resistant to decomposition, neither stimulated nor reduced microbial activities or plant cover and did not influence SOC or DOC. Our findings demonstrate that the influence of woodchip amendments on microbial processes and soil carbon dynamics depends on the location of application and that coarse fast-pyrolysis biochar has limited influence on soil processes over a 22-month study in a water-limited ecosystem.
英文关键词	drylands exoenzyme and extracellular enzyme activities revegetation soil management soil respiration Sonoran Desert
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000529666500001
WOS关键词	DISSOLVED ORGANIC-CARBON ; ENZYME-ACTIVITIES ; TEMPERATURE SENSITIVITY ; COMMUNITY COMPOSITION ; USE EFFICIENCY ; WATER CONTENT ; NITROGEN ; FOREST ; DECOMPOSITION ; RESTORATION
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/2XILL650/318998
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	Espinosa, Noelle J.,Moore, David J. P.,Rasmussen, Craig,et al. Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils[J]. University of Arizona,2020,28:S381-S392.
APA	Espinosa, Noelle J.,Moore, David J. P.,Rasmussen, Craig,Fehmi, Jeffrey S.,&Gallery, Rachel E..(2020).Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils.RESTORATION ECOLOGY,28,S381-S392.
MLA	Espinosa, Noelle J.,et al."Woodchip and biochar amendments differentially influence microbial responses, but do not enhance plant recovery in disturbed semiarid soils".RESTORATION ECOLOGY 28(2020):S381-S392.