Comparison of evapotranspiration components and water-use efficiency among different land use patterns of temperate steppe in the Northern China pastoral-farming ecotone
Li, YZ; Fan, JW; Hu, ZM; Shao, QQ; Harris, W
2016
Source PublicationINTERNATIONAL JOURNAL OF BIOMETEOROLOGY
ISSN0020-7128
Volume60Issue:6Pages:827-841
AbstractWater-use efficiency (WUE), which links carbon and water cycles, is an important indicator of assessing the interactions between ecosystems and regional climate. Using chamber methods with and without plant removal treatments, we investigated WUE and evapotranspiration (ET) components in three ecosystems with different land-use types in Northern China pastoral-farming ecotone. In comparison, ET of the ecosystems with grazing exclusion and cultivating was 6.7 and 13.4 % higher than that of the ecosystem with free grazing. The difference in ET was primarily due to the different magnitudes of soil water evaporation (E) rather than canopy transpiration (T). Canopy WUE (WUEc, i.e., the ratio of gross primary productivity to T) at the grazing excluded and cultivated sites was 17 and 36% higher than that at the grazing site. Ecosystem WUE (WUEnep, i.e., the ratio of net ecosystem productivity to ET) at the cultivated site was 34 and 28% lower in comparison with grazed and grazing excluded stepped, respectively. The varied leaf area index (LAI) of different land uses was correlated with microclimate and ecosystem vapor/carbon exchange. The LAI changing with land uses should be the primary regulation of grassland WUE. These findings facilitate the mechanistic understanding of carbon-water relationships at canopy and ecosystem levels and projection of the effects of land-use change on regional climate and productivity.
SubtypeJournal
KeywordTemperate steppe Evapotranspiration composition Water-use efficiency Pastoral-farming ecotone Grassland use change Grassland cultivation Grazing exclusion
Subject AreaBiophysics ; Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences ; Physiology
WOS Subject ExtendedBiophysics ; Environmental Sciences ; Meteorology & Atmospheric Sciences ; Physiology
WOS KeywordRAIN-USE EFFICIENCY ; PRECIPITATION-USE EFFICIENCY ; GROSS PRIMARY PRODUCTION ; INNER-MONGOLIA ; GRASSLAND ECOSYSTEMS ; SEMIARID STEPPE ; CARBON STORAGE ; CLIMATE-CHANGE ; DYNAMICS ; FOREST
Indexed BySCI
Language英语
WOS IDWOS:000379262000004
PublisherSPRINGER
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44228
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Li, YZ,Fan, JW,Hu, ZM,et al. Comparison of evapotranspiration components and water-use efficiency among different land use patterns of temperate steppe in the Northern China pastoral-farming ecotone[J]. INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,2016,60(6):827-841.
APA Li, YZ,Fan, JW,Hu, ZM,Shao, QQ,&Harris, W.(2016).Comparison of evapotranspiration components and water-use efficiency among different land use patterns of temperate steppe in the Northern China pastoral-farming ecotone.INTERNATIONAL JOURNAL OF BIOMETEOROLOGY,60(6),827-841.
MLA Li, YZ,et al."Comparison of evapotranspiration components and water-use efficiency among different land use patterns of temperate steppe in the Northern China pastoral-farming ecotone".INTERNATIONAL JOURNAL OF BIOMETEOROLOGY 60.6(2016):827-841.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Li, YZ]'s Articles
[Fan, JW]'s Articles
[Hu, ZM]'s Articles
Baidu academic
Similar articles in Baidu academic
[Li, YZ]'s Articles
[Fan, JW]'s Articles
[Hu, ZM]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Li, YZ]'s Articles
[Fan, JW]'s Articles
[Hu, ZM]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.