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Comparison of Carbon-Use Efficiency Among Different Land-Use Patterns of the Temperate Steppe in the Northern China Pastoral Farming Ecotone
Li, Yuzhe1; Fan, Jiangwen1; Hu, Zhongmin2
2018-02-01
Source PublicationSUSTAINABILITY
ISSN2071-1050
Volume10Issue:2Pages:17
Corresponding AuthorFan, Jiangwen(fanjw@igsnrr.ac.cn)
AbstractCarbon-use efficiency (CUE) is the proportion of gross primary production converted to net primary production. Changes to CUE strongly influence ecosystem carbon budgets and turnover. Little is known about the response of ecosystem CUE to human-induced land-use change, which limits the accurate evaluation of the environmental influence of large-scale steppe-use changes in northern China. We investigated the components of ecosystem carbon exchange and CUE under three typical steppe-use patterns in Xilinhot, Inner Mongolia. The results showed that CUE in grazing and grazing-excluded steppe were not significantly different (both over 0.7) but were significantly higher than in cultivated steppe (0.57). Ecosystem respiration and its components, including autotrophic respiration (Ra), aboveground respiration, heterotrophic respiration and belowground respiration showed significant negative correlation with CUE. Ra is the most important factor explaining the variation of CUE between different steppe-use patterns (p < 0.001, 97%); Ra change may be the primary factor driving CUE variation between steppe-use patterns. Leaf area index of different grassland-use patterns also showed a significant negative correlation with CUE (p < 0.001, 91%). These findings may help to improve accurate prediction of the environmental and climatic consequences of large-scale land-use change.
Keywordfarming-pastoral ecozone land-use pattern temperate steppe ecosystem carbon exchange carbon use efficiency
DOI10.3390/su10020487
WOS KeywordGROSS PRIMARY PRODUCTION ; ECOSYSTEM RESPIRATION ; SOIL RESPIRATION ; CLIMATE-CHANGE ; GRASSLAND ; RESPONSES ; PHOTOSYNTHESIS ; SEQUESTRATION ; AGRICULTURE ; ACCLIMATION
Indexed BySCI
Language英语
Funding ProjectNational Key R&D Program of China[2017YEA0604801] ; Natural Sciences Foundation of China[41601615]
Funding OrganizationNational Key R&D Program of China ; Natural Sciences Foundation of China
WOS Research AreaScience & Technology - Other Topics ; Environmental Sciences & Ecology
WOS SubjectGREEN & SUSTAINABLE SCIENCE & TECHNOLOGY ; Environmental Sciences ; Environmental Studies
WOS IDWOS:000425943100210
PublisherMDPI AG
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57109
Collection中国科学院地理科学与资源研究所
Corresponding AuthorFan, Jiangwen
Affiliation1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China
2.South China Normal Univ, Sch Geog, Guangzhou 510631, Guangdong, Peoples R China
Recommended Citation
GB/T 7714
Li, Yuzhe,Fan, Jiangwen,Hu, Zhongmin. Comparison of Carbon-Use Efficiency Among Different Land-Use Patterns of the Temperate Steppe in the Northern China Pastoral Farming Ecotone[J]. SUSTAINABILITY,2018,10(2):17.
APA Li, Yuzhe,Fan, Jiangwen,&Hu, Zhongmin.(2018).Comparison of Carbon-Use Efficiency Among Different Land-Use Patterns of the Temperate Steppe in the Northern China Pastoral Farming Ecotone.SUSTAINABILITY,10(2),17.
MLA Li, Yuzhe,et al."Comparison of Carbon-Use Efficiency Among Different Land-Use Patterns of the Temperate Steppe in the Northern China Pastoral Farming Ecotone".SUSTAINABILITY 10.2(2018):17.
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