气候变化领域集成服务门户(CCPortal): Seasonal variations in temperature sensitivity of soil respiration in a larch forest in the Northern Daxing'an Mountains in Northeast China

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DOI	10.1007/s11676-021-01346-4
	Seasonal variations in temperature sensitivity of soil respiration in a larch forest in the Northern Daxing'an Mountains in Northeast China
	Yang, Lin; Zhang, Qiuliang; Ma, Zhongtao; Jin, Huijun; Chang, Xiaoli; Marchenko, Sergey S.; Spektor, Valentin V.
通讯作者	Zhang, QL (通讯作者)，Inner Mongolia Agr Univ, Coll Forestry, Hohhot 010019, Peoples R China. ; Zhang, QL (通讯作者)，Inner Mongolia Agr Univ, Da Xinganling Forest Ecosyst Res Stn Inner Mongol, Hohhot 010019, Peoples R China.
发表日期	2020
ISSN	1007-662X
EISSN	1993-0607
英文摘要	Temperature sensitivity of respiration of forest soils is important for its responses to climate warming and for the accurate assessment of soil carbon budget. The sensitivity of temperature (T-i) to soil respiration rate (R-s), and Q(10) defined by e(10(lnRs-lna)/Ti) has been used extensively for indicating the sensitivity of soil respiration. The soil respiration under a larch (Larix gmelinii) forest in the northern Daxing'an Mountains, Northeast China was observed in situ from April to September, 2019 using the dynamic chamber method. Air temperatures (T-air), soil surface temperatures (T-0cm), soil temperatures at depths of 5 and 10 cm (T-5cm and T-10cm, respectively), and soil-surface water vapor concentrations were monitored at the same time. The results show a significant monthly variability in soil respiration rate in the growing season (April-September). The Q(10) at the surface and at depths of 5 and 10 cm was estimated at 5.6, 6.3, and 7.2, respectively. The Q(10@10 cm) over the period of surface soil thawing (Q(10@10 cm, thaw) = 36.89) were significantly higher than that of the growing season (Q(10@10 cm, growth) = 3.82). Furthermore, the R-s in the early stage of near-surface soil thawing and in the middle of the growing season is more sensitive to changes in soil temperatures. Soil temperature is thus the dominant factor for season variations in soil respiration, but rainfall is the main controller for short-term fluctuations in respiration. Thus, the higher sensitivity of soil respiration to temperature (Q(10)) is found in the middle part of the growing season. The monthly and seasonal Q(10) values better reflect the responsiveness of soil respiration to changes in hydrometeorology and ground freeze-thaw processes. This study may help assess the stability of the soil carbon pool and strength of carbon fluxes in the larch forested permafrost regions in the northern Daxing'an Mountains.
关键词	CLIMATE-CHANGE CO2 EFFLUX BIOCHAR Q(10)EMISSION FLUXES WATER
英文关键词	Soil respiration; Dynamic chamber method; Ground thawing; Major growth period; Soil temperature
语种	英语
WOS研究方向	Forestry
WOS类目	Forestry
WOS记录号	WOS:000648837900001
来源期刊	JOURNAL OF FORESTRY RESEARCH
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254910
作者单位	[Yang, Lin; Zhang, Qiuliang; Ma, Zhongtao] Inner Mongolia Agr Univ, Coll Forestry, Hohhot 010019, Peoples R China; [Yang, Lin; Zhang, Qiuliang; Ma, Zhongtao] Inner Mongolia Agr Univ, Da Xinganling Forest Ecosyst Res Stn Inner Mongol, Hohhot 010019, Peoples R China; [Jin, Huijun; Chang, Xiaoli] Northeast Forestry Univ, Res Stn Permafrost Geoenvironm, Minist Educ, Inst Cold Reg Sci & Engn, Harbin 150040, Peoples R China; [Jin, Huijun; Chang, Xiaoli] Northeast Forestry Univ, Sch Civil Engn, Harbin 150040, Peoples R China; [Jin, Huijun] Chinese Acad Sci, State Key Lab Frozen Soils Engn, Northwest Inst Ecoenvironm & Resources, Lanzhou 730000, Peoples R China; [Marchenko, Sergey S.] Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA; [Spektor, Valentin V.] Russian Acad Sci, Siberia Branch, Melnikov Permafrost Inst, Lab Gen Geocryol, Yakutsk 677010, Russia
推荐引用方式 GB/T 7714	Yang, Lin,Zhang, Qiuliang,Ma, Zhongtao,et al. Seasonal variations in temperature sensitivity of soil respiration in a larch forest in the Northern Daxing'an Mountains in Northeast China[J]. 中国科学院西北生态环境资源研究院,2020.
APA	Yang, Lin.,Zhang, Qiuliang.,Ma, Zhongtao.,Jin, Huijun.,Chang, Xiaoli.,...&Spektor, Valentin V..(2020).Seasonal variations in temperature sensitivity of soil respiration in a larch forest in the Northern Daxing'an Mountains in Northeast China.JOURNAL OF FORESTRY RESEARCH.
MLA	Yang, Lin,et al."Seasonal variations in temperature sensitivity of soil respiration in a larch forest in the Northern Daxing'an Mountains in Northeast China".JOURNAL OF FORESTRY RESEARCH (2020).