干旱区生态环境知识资源中心(Arid): Biocrust regulates the effects of water and temperature on soil microbial and nematode communities in a semiarid ecosystem

Arid

DOI	10.1002/ldr.3522
	Biocrust regulates the effects of water and temperature on soil microbial and nematode communities in a semiarid ecosystem
	Guan, Pingting 1,2; Zhang, Xiaoke 2; Cheng, Yunyun 3; Zheng, Hairui 2; Liang, Wenju 2
通讯作者	Zhang, Xiaoke
来源期刊	LAND DEGRADATION & DEVELOPMENT
ISSN	1085-3278
EISSN	1099-145X
出版年	2020
卷号	31 期号:11 页码:1335-1343
英文摘要	Global climate changes in temperature and precipitation are influencing the function of semiarid ecosystems, especially that of biocrust. Biocrust is the key biotic component in semiarid land and delivers multiple functions to belowground ecosystems. However, how biocrust affects belowground biota when temperature and water change remains unclear. We set a microcosm experiment to evaluate how soil micro-food web responds to biocrust by changing air temperature and water content. Soil microbes and nematodes were sampled at different air temperatures (10 and 25 degrees C) and soil water levels (4, 8, and 16% soil water content) under biocrust and bare soil. The results showed that biocrust highly increased soil microbe and nematode abundances compared with bare soil. Temperature change had no obvious effect on soil micro-food web. Both microbial and nematode communities were strongly affected by soil water at 10 degrees C under biocrust. Structural equation modeling analysis proved that soil pH and organic carbon were the two main factors that affected soil micro-food channels under biocrust. Soil organic carbon affected bacterial channel and fungal channel. Soil pH affected soil bacterial channel and omnivores-predators. Soil with 8% water content could provide the most stable habitat and soil environment to build a relatively complex and more reticulated soil micro-food web. It can be concluded that colonization of biocrust could buffer temperature effect on soil micro-food web. Additionally, appropriate increase in water could benefit the top-down effect between nematodes and microbes under biocrust and could contribute to the resilience of semiarid ecosystems.
英文关键词	biocrust nematode community PLFA semiarid ecosystem soil micro-food web
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000504815700001
WOS关键词	TOP-DOWN CONTROL ; BIOLOGICAL SOIL ; FOOD-WEB ; BIOGEOCHEMICAL CYCLES ; CRUST DEVELOPMENT ; TENGGER DESERT ; CLIMATE-CHANGE ; RESPONSES ; PRECIPITATION ; BIOMASS
WOS类目	Environmental Sciences ; Soil Science
WOS研究方向	Environmental Sciences & Ecology ; Agriculture
EI主题词	2019-12-30
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/311961
作者单位	1.Northeast Normal Univ, Sch Environm, State Environm Protect Key Lab Wetland Ecol & Veg, Changchun, Jilin, Peoples R China; 2.Chinese Acad Sci, Inst Appl Ecol, Key Lab Forest Ecol & Management, Shenyang, Liaoning, Peoples R China; 3.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Guan, Pingting,Zhang, Xiaoke,Cheng, Yunyun,et al. Biocrust regulates the effects of water and temperature on soil microbial and nematode communities in a semiarid ecosystem[J],2020,31(11):1335-1343.
APA	Guan, Pingting,Zhang, Xiaoke,Cheng, Yunyun,Zheng, Hairui,&Liang, Wenju.(2020).Biocrust regulates the effects of water and temperature on soil microbial and nematode communities in a semiarid ecosystem.LAND DEGRADATION & DEVELOPMENT,31(11),1335-1343.
MLA	Guan, Pingting,et al."Biocrust regulates the effects of water and temperature on soil microbial and nematode communities in a semiarid ecosystem".LAND DEGRADATION & DEVELOPMENT 31.11(2020):1335-1343.