干旱区生态环境知识资源中心(Arid): Depth dependence of temperature sensitivity of soil carbon dioxide, nitrous oxide and methane emissions

Arid

DOI	10.1016/j.soilbio.2020.107956
	Depth dependence of temperature sensitivity of soil carbon dioxide, nitrous oxide and methane emissions
	Zhang, Hongjin; Yao, Xiaodong; Zeng, Wenjing; Fang, Yuan; Wang, Wei
通讯作者	Wang, W
来源期刊	SOIL BIOLOGY & BIOCHEMISTRY
ISSN	0038-0717
EISSN	1879-3428
出版年	2020
卷号	149
英文摘要	Carbon dioxide (CO2), nitrous oxide (N2O) and methane (CH4) are three important greenhouse gases (GHGs) associated with rising temperature. Their temperature sensitivities (Q(10)) play important roles in predicting soil-atmosphere gas exchange under global warming. Few studies have simultaneously evaluated the variation in Q(10) of CO2, N2O and CH4 emissions across different soil depths. Here, we sampled soils from 13 sites along a climatic transect in temperate grasslands of northern China, including meadow steppe, typical steppe and desert steppe. Soil samples were collected from five depths (0-10, 10-20, 20-40, 40-60 and 60-100 cm) and incubated at four temperatures (5, 15, 25 and 35 degrees C). We determined GHG emission rates, corresponding biotic (microbial biomass, microbial abundance and composition, and extracellular enzyme activities) and abiotic (soil carbon, nitrogen content, and soil pH) factors. The average Q(10) of CO2 and N2O emissions differed non-significantly among steppe types, while the effect of steppe type on Q(10) of CH4 emission was strongly affected by measured temperature ranges. Q(10) of CO2 and N2O emissions declined with soil depth, but showed no significant differences for CH4. The mechanisms driving the variations in Q(10) of GHG emissions among soil depths changed with steppe types. Q(10) of CO2 emission was significantly correlated with substrate quality and microbial biomass in meadow steppe and desert steppe, and with microbial abundance and composition in typical steppe. Q(10) of N2O emission was significantly influenced by microbial biomass in meadow steppe, soil pH in typical steppe, and substrate quality and microbial biomass in desert steppe, respectively. Q(10) of CH4 emission was significantly associated with microbial biomass in typical steppe, and with substrate quality in meadow steppe and desert steppe, respectively. Our findings emphasized the importance of considering steppe type when assessing vertical dynamics of Q(10) of GHG emissions.
英文关键词	Carbon dioxide Nitrous oxide Methane Temperature sensitivities Soil depth Grassland
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000567094800034
WOS关键词	GREENHOUSE-GAS EMISSIONS ; EXTRACELLULAR ENZYME-ACTIVITY ; MICROBIAL BIOMASS ; ORGANIC-CARBON ; EXTRACTION METHOD ; CLIMATE-CHANGE ; N2O EMISSION ; LAND-USE ; RESPIRATION ; PERMAFROST
WOS类目	Soil Science
WOS研究方向	Agriculture
来源机构	北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/326121
作者单位	[Zhang, Hongjin; Yao, Xiaodong; Zeng, Wenjing; Fang, Yuan; Wang, Wei] Peking Univ, Coll Urban & Environm Sci, Dept Ecol, Minist Educ, Beijing 100871, Peoples R China; [Zhang, Hongjin; Yao, Xiaodong; Zeng, Wenjing; Fang, Yuan; Wang, Wei] Peking Univ, Key Lab Earth Surface Proc, Minist Educ, Beijing 100871, Peoples R China; [Yao, Xiaodong] Peking Univ, Sch Urban Planning & Design, Shenzhen Grad Sch, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Hongjin,Yao, Xiaodong,Zeng, Wenjing,et al. Depth dependence of temperature sensitivity of soil carbon dioxide, nitrous oxide and methane emissions[J]. 北京大学,2020,149.
APA	Zhang, Hongjin,Yao, Xiaodong,Zeng, Wenjing,Fang, Yuan,&Wang, Wei.(2020).Depth dependence of temperature sensitivity of soil carbon dioxide, nitrous oxide and methane emissions.SOIL BIOLOGY & BIOCHEMISTRY,149.
MLA	Zhang, Hongjin,et al."Depth dependence of temperature sensitivity of soil carbon dioxide, nitrous oxide and methane emissions".SOIL BIOLOGY & BIOCHEMISTRY 149(2020).