干旱区生态环境知识资源中心(Arid): Interactive effects of hydrological conditions on soil respiration in China's Horqin sandy land: An example of dune-meadow cascade ecosystem

Arid

DOI	10.1016/j.scitotenv.2018.10.198
	Interactive effects of hydrological conditions on soil respiration in China's Horqin sandy land: An example of dune-meadow cascade ecosystem
	Han, Chunxue 1,2; Yu, Ruihong 3; Lu, Xixi 3,4; Duan, Limin 1,2; Singh, Vijay P.5,6; Liu, Tingxi 1,2
通讯作者	Yu, Ruihong ; Liu, Tingxi
来源期刊	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
EISSN	1879-1026
出版年	2019
卷号	651 页码:3053-3063
英文摘要	Soil moisture (M-s) strongly influences dynamic changes in soil respiration (R-s) and is thus an important factor when predicting soil carbon emissions. However, the various sources of M-s (rainfall, groundwater, and condensation) exert complicated and uncertain effects on R-s This study examined the growth seasonal variation (from April to October) of R-s and the diurnal variation in a cascade ecosystem consisting of sandy bare ground, a transitional artificial Populus forest, and a meadow Phragmites communis community in China's Horqin sandy land. Simultaneous measurements of the 0-10 cm depth soil temperature (T-s) and M-s , rainfall, the surface air relative humidity and the groundwater depth were collected. The results revealed that in sandy bare ground with M-s below field capacity, M-s had a greater impact on R-s than T-s, and rainfall could increase R-s The effect of condensation on it R-s during periods of continuous drought could not be ignored. In the meadowlands with M-s above field capacity, the groundwater affected R-s indirectly by regulating M-s and the relationship with T-s, and rainfall had an adverse effect on R-s. The effects of rainfall. M-s and T-s on R-s were minimum as M-s approached the saturation water content In the transitional forest, M-s and T-s were the main factors controlling R-s. The most favorable M-s for it R-s was close to the field capacity. The results emphasize that field capacity and saturation water content are the demarcation points of a soil carbon emissions prediction model, and the effect of different hydrological conditions and T-s on R-s at each segment are reconsidered accordingly. Ultimately, the carbon emission patterns of the cascade ecosystems in arid and semi-arid areas are extremely complicated and have to be considered specially for estimating terrestrial carbon emissions. (C) 2018 Elsevier B.V. All rights reserved.
英文关键词	And and semi-arid region Groundwater Rainfall Soil moisture Condensation water
类型	Article
语种	英语
国家	Peoples R China ; Singapore ; USA
收录类别	SCI-E
WOS记录号	WOS:000450551600130
WOS关键词	CO2 EFFLUX ; WATER CONTENT ; HETEROTROPHIC RESPIRATION ; TEMPERATURE-DEPENDENCE ; MOISTURE AVAILABILITY ; MICROBIAL ACTIVITY ; GROUNDWATER LEVEL ; CARBON-DIOXIDE ; GAS-DIFFUSION ; NEGEV DESERT
WOS类目	Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/218611
作者单位	1.Inner Mongolia Agr Univ, Water Conservancy & Civil Engn Coll, Hohhot 010018, Peoples R China; 2.Inner Mongolia Water Resource Protect & Utilizat, Hohhot 010018, Peoples R China; 3.Inner Mongolia Univ, Sch Ecol & Environm, Inner Mongolia Key Lab River & Lake Ecol, Hohhot 010021, Peoples R China; 4.Natl Univ Singapore, Dept Geog, Singapore 119260, Singapore; 5.Texas A&M Univ, Dept Biol & Agr Engn, College Stn, TX 77843 USA; 6.Texas A&M Univ, Zachry Dept Civil Engn, College Stn, TX 77843 USA
推荐引用方式 GB/T 7714	Han, Chunxue,Yu, Ruihong,Lu, Xixi,et al. Interactive effects of hydrological conditions on soil respiration in China's Horqin sandy land: An example of dune-meadow cascade ecosystem[J],2019,651:3053-3063.
APA	Han, Chunxue,Yu, Ruihong,Lu, Xixi,Duan, Limin,Singh, Vijay P.,&Liu, Tingxi.(2019).Interactive effects of hydrological conditions on soil respiration in China's Horqin sandy land: An example of dune-meadow cascade ecosystem.SCIENCE OF THE TOTAL ENVIRONMENT,651,3053-3063.
MLA	Han, Chunxue,et al."Interactive effects of hydrological conditions on soil respiration in China's Horqin sandy land: An example of dune-meadow cascade ecosystem".SCIENCE OF THE TOTAL ENVIRONMENT 651(2019):3053-3063.