Arid
DOI10.1007/s11707-018-0687-y
Soil respiration in typical plant communities in the wetland surrounding the high-salinity Ebinur Lake
Li, Yanhong1,2; Zhao, Mingliang1,2; Li, Fadong1,2,3,4
通讯作者Li, Yanhong
来源期刊FRONTIERS OF EARTH SCIENCE
ISSN2095-0195
EISSN2095-0209
出版年2018
卷号12期号:3页码:611-624
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.


英文关键词Ebinur Lake soil respiration high salinity soil temperature soil moisture
类型Article
语种英语
国家Peoples R China
收录类别SCI-E
WOS记录号WOS:000444389400013
WOS关键词GREENHOUSE-GAS FLUXES ; ORGANIC-MATTER ; ECOSYSTEM RESPIRATION ; TALLGRASS PRAIRIE ; METHANE EMISSION ; WATER CONTENT ; CO2 EFFLUX ; TEMPERATURE ; AVAILABILITY ; COMPONENTS
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
来源机构中国科学院地理科学与资源研究所
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/209493
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]. 中国科学院地理科学与资源研究所,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.
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