Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake

doi:10.1007/s11707-018-0687-y

	Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake
	Li, Yanhong 1,2; Zhao, Mingliang 1,2; Li, Fadong 1,2,3,4
刊名	FRONTIERS OF EARTH SCIENCE
	2018-09-01
卷号	12 期号:3 页码:611-624
关键词	Ebinur Lake soil respiration high salinity soil temperature soil moisture
ISSN号	2095-0195
DOI	10.1007/s11707-018-0687-y
通讯作者	Li, Yanhong(lyh0704@126.com)
英文摘要	Soil respiration in wetlands surrounding lakes is a vital component of the soil carbon cycle in arid regions. However, information remains limited on the soil respiration around highly saline lakes during the plant growing season. Here, we aimed to evaluate diurnal and seasonal variation in soil respiration to elucidate the controlling factors in the wetland of Ebinur Lake, Xinjiang Uygur Autonomous Region, western China. We used a soil carbon flux automatic analyzer (LI-840A) to measure soil respiration rates during the growing season (April to November) in two fields covered by reeds and tamarisk and one field with no vegetation (bare soil) from 2015 to 2016. The results showed a single peak in the diurnal pattern of soil respiration from 11:00 to 17:00 for plots covered in reeds, tamarisk, and bare soil, with minimum values being detected from 03:00 to 07:00. During the growing season, the soil respiration of reeds and tamarisk peaked during the thriving period (4.16 and 3.75 molm(-2)s(-1), respectively), while that of bare soil peaked during the intermediate growth period (0.74 molm(-2)s(-1)). The soil respiration in all three plots was lowest during the wintering period (0.08, 0.09, and-0.87 molm(-2)s(-1), respectively). Air temperature and relative humidity significantly influenced soil respiration. A significant linear relationship was detected between soil respiration and soil temperature for reeds, tamarisk, and bare soil. The average Q(10) of reeds and tamarisk were larger than that of bare soil. However, soil moisture content was not the main factor controlling soil respiration. Soil respiration was negatively correlated with soil pH and soil salinity in all three plot types. In contrast, soil respiration was positively correlated with organic carbon. Overall, CO2 emissions and greenhouse gases had a relatively weak effect on the wetlands surrounding the highly saline Ebinur Lake.
资助项目	Key Laboratory Open Project Fund of Xinjiang Uygur Autonomous Region[2015KL015]
WOS关键词	GREENHOUSE-GAS FLUXES ; ORGANIC-MATTER ; TEMPERATURE SENSITIVITY ; ECOSYSTEM RESPIRATION ; TALLGRASS PRAIRIE ; METHANE EMISSION ; WATER CONTENT ; CO2 EFFLUX ; CHINA ; AVAILABILITY
WOS研究方向	Geology
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000444389400013
资助机构	Key Laboratory Open Project Fund of Xinjiang Uygur Autonomous Region
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/52927]
专题	中国科学院地理科学与资源研究所
通讯作者	Li, Yanhong
作者单位	1.Xinjiang Normal Univ, Coll Geog & Tourism, Urumqi 830054, Peoples R China 2.Xinjiang Lab Lake Environm & Resources Arid Area, Key Lab Xinjiang Uygur Autonomous Reg, Urumqi 830054, Peoples R China 3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 4.Univ Chinese Acad Sci, Coll Resources & Environm, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Li, Yanhong,Zhao, Mingliang,Li, Fadong. Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake[J]. FRONTIERS OF EARTH SCIENCE,2018,12(3):611-624.
APA	Li, Yanhong,Zhao, Mingliang,&Li, Fadong.(2018).Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake.FRONTIERS OF EARTH SCIENCE,12(3),611-624.
MLA	Li, Yanhong,et al."Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake".FRONTIERS OF EARTH SCIENCE 12.3(2018):611-624.