干旱区生态环境知识资源中心(Arid): Land uses changed the dynamics and controls of carbon-water exchanges in alkali-saline Songnen Plain of Northeast China

Arid

DOI	10.1016/j.ecolind.2021.108353
	Land uses changed the dynamics and controls of carbon-water exchanges in alkali-saline Songnen Plain of Northeast China
	Dong, Gang; Zhao, Fangyuan; Chen, Jiquan; Qu, Luping; Jiang, Shicheng; Chen, Jingyan; Xin, Xiaoping; Shao, Changliang
通讯作者	Xin, XP ; Shao, CL (corresponding author), Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China. ; Xin, XP ; Shao, CL (corresponding author), Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China.
来源期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
EISSN	1872-7034
出版年	2021
卷号	133
英文摘要	Land reclamation and grassland management are important land utilization pattern for effective use and restoration of alkali-saline land in agriculture-pasture transition regions. These large-scale land cover/land use changes (LCLUC) could impose profound and divergent impacts on terrestrial carbon (C) and H2O cycling, hence require precise assessment of ecosystem CO2 uptake and water use differences due to specific land use of the same climate/soil landscape. We initiated clustered eddy covariance flux-tower observations and C/H2O fluxes analysis of 4 adjacent representative land cover and grassland managements types on alkali-saline Songnen Plain, including fenced meadow (as reference land use), clipped meadow, degraded alkali-saline land and paddy field in 2018-2019. Results showed that differences in land use influenced the magnitude and temporal variation of net ecosystem productivity (NEP) and evapotranspiration (ET). Compared to fenced meadow, paddy field increased growing season C uptake by 63.3% and ET by 35.4%, while degraded alkali-saline land and clipped meadow decreased C uptake by 43.0% and 30.6%, and ET by 32.1% and 3.2%. Degraded alkali-saline land barely sequestrate C in dry year, whereas paddy field is least sensitive to inter-annual precipitation variation. Growing season C uptake was advanced in clipped meadow due to increased surface temperature, while monthly ET peaked early at May in paddy field. Agricultural use and specific grassland management also caused large differences in ET partitioning. Fenced meadow had greater ET partitioned into transpiration (69%) than clipped meadow (58%), degraded alkali-saline land and paddy field (41% and 34%, respectively). Water use efficiency appeared greater in clipped meadow and degraded alkali-saline land than in fenced meadow, and responded differently to abiotic factors. Overall, large-scale LCLUC has exerted significant influence on terrestrial C/H2O balances and physical responses in alkali-saline Songnen Plain.
英文关键词	Land cover land use Alkali-saline land Fencing Clipping Paddy field Net ecosystem productivity Evapotranspiration
类型	Article
语种	英语
开放获取类型	gold
收录类别	SCI-E
WOS记录号	WOS:000719795700003
WOS关键词	SOIL PROPERTIES ; USE EFFICIENCY ; INTERANNUAL VARIABILITY ; GRASSLAND ECOSYSTEMS ; COMPENSATORY GROWTH ; SEASONAL-VARIATION ; DIOXIDE EXCHANGE ; DESERT STEPPE ; CO2 EXCHANGE ; FLUXES
WOS类目	Biodiversity Conservation ; Environmental Sciences
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/374093
作者单位	[Dong, Gang] Shanxi Univ, Sch Life Sci, Taiyuan 030006, Peoples R China; [Dong, Gang; Zhao, Fangyuan; Xin, Xiaoping; Shao, Changliang] Chinese Acad Agr Sci, Natl Hulunber Grassland Ecosyst Observat & Res St, Beijing 100081, Peoples R China; [Dong, Gang; Zhao, Fangyuan; Xin, Xiaoping; Shao, Changliang] Chinese Acad Agr Sci, Inst Agr Resources & Reg Planning, Beijing 100081, Peoples R China; [Dong, Gang] Shanxi Univ, Inst Loess Plateau, Taiyuan 030006, Peoples R China; [Zhao, Fangyuan] Inner Mongolia Univ, Sch Ecol & Environm, Hohhot 010021, Peoples R China; [Chen, Jiquan] Michigan State Univ, Dept Geog Environm & Spatial Sci, E Lansing, MI 48824 USA; [Qu, Luping] Fujian Agr & Forestry Univ, Coll Forestry, Fuzhou 350002, Peoples R China; [Jiang, Shicheng] Northeast Normal Univ, Key Lab Vegetat Ecol, Minist Educ, Changchun 130024, Peoples R China; [Chen, Jingyan] Chinese Acad Sci, Inst Bot, Beijing 100093, Peoples R China; [Chen, Jingyan] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Dong, Gang,Zhao, Fangyuan,Chen, Jiquan,et al. Land uses changed the dynamics and controls of carbon-water exchanges in alkali-saline Songnen Plain of Northeast China[J],2021,133.
APA	Dong, Gang.,Zhao, Fangyuan.,Chen, Jiquan.,Qu, Luping.,Jiang, Shicheng.,...&Shao, Changliang.(2021).Land uses changed the dynamics and controls of carbon-water exchanges in alkali-saline Songnen Plain of Northeast China.ECOLOGICAL INDICATORS,133.
MLA	Dong, Gang,et al."Land uses changed the dynamics and controls of carbon-water exchanges in alkali-saline Songnen Plain of Northeast China".ECOLOGICAL INDICATORS 133(2021).