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Estimation and uncertainty analyses of grassland biomass in Northern China: Comparison of multiple remote sensing data sources and modeling approaches
Jia, Wenxiao; Liu, Min; Yang, Yuanhe1; He, Honglin2; Zhu, Xudong3,4; Yang, Fang; Yin, Cai5; Xiang, Weining
2016
发表期刊ECOLOGICAL INDICATORS
ISSN1470-160X
卷号60页码:1031-1040
摘要Accurate estimation of grassland biomass and its dynamics are crucial not only for the biogeochemical dynamics of terrestrial ecosystems, but also for the sustainable use of grassland resources. However, estimations of grassland biomass on large spatial scale usually suffer from large variability and mostly lack quantitative uncertainty analyses. In this study, the spatial grassland biomass estimation and its uncertainty were assessed based on 265 field measurements and remote sensing data across Northern China during 2001-2005. Potential sources of uncertainty, including remote sensing data sources (DATsrc), model forms (MODfrm) and model parameters (biomass allocation, BMallo, e.g. root:shoot ratio), were determined and their relative contribution was quantified. The results showed that the annual grassland biomass in Northern China was 1268.37 +/- 180.84Tg (i.e., 532.02 +/- 99.71 g/m(2)) during 2001-2005, increasing from western to eastern area, with a mean relative uncertainty of 19.8%. There were distinguishable differences among the uncertainty contributions of three sources (BMallo >DATsrc>MODfrm), which contributed 52%, 27% and 13%, respectively. This study highlighted the need to concern the uncertainty in grassland biomass estimation, especially for the uncertainty related to BMallo. (C) 2015 Elsevier Ltd. All rights reserved.
关键词Grassland biomass NDVI Root-to-shoot ratio Uncertainty analysis Northern China
学科领域Biodiversity Conservation ; Environmental Sciences
DOI10.1016/j.ecolind.2015.09.001
收录类别SCI
语种英语
WOS关键词NET PRIMARY PRODUCTIVITY ; MODIS TIME-SERIES ; ABOVEGROUND BIOMASS ; ALPINE GRASSLANDS ; TIBETAN PLATEAU ; CARBON STORAGE ; VEGETATION ; PATTERNS ; AVHRR ; PERFORMANCE
WOS研究方向Science Citation Index Expanded (SCI-EXPANDED)
WOS记录号WOS:000367407000104
出版者ELSEVIER SCIENCE BV
文献子类Article
出版地AMSTERDAM
EISSN1872-7034
资助机构Non-profit Special Research fund of National Environmental Protection of China [201109030] ; Science and Technology Projects of China on Certified carbon budget affected by climate change and related issues [XDA05050700] ; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41201092, 41471076]
作者邮箱mliu@re.ecnu.edu.cn
作品OA属性Green Published
引用统计
被引频次:52[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ibcas.ac.cn/handle/2S10CLM1/25218
专题植被与环境变化国家重点实验室
作者单位1.E China Normal Univ, Sch Ecol & Environm Sci, Shanghai Key Lab Urban Ecol Proc & EcoRestorat, Shanghai 200241, Peoples R China
2.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing 100093, Peoples R China
3.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Ecosyst Network Observat & Modeling, Beijing 100101, Peoples R China
4.Colorado State Univ, Nat Resource Ecol Lab, Ft Collins, CO 80523 USA
5.Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Earth Sci, Berkeley, CA 94720 USA
6.E China Normal Univ, Sch Geog Sci, Shanghai 200241, Peoples R China
推荐引用方式
GB/T 7714
Jia, Wenxiao,Liu, Min,Yang, Yuanhe,et al. Estimation and uncertainty analyses of grassland biomass in Northern China: Comparison of multiple remote sensing data sources and modeling approaches[J]. ECOLOGICAL INDICATORS,2016,60:1031-1040.
APA Jia, Wenxiao.,Liu, Min.,Yang, Yuanhe.,He, Honglin.,Zhu, Xudong.,...&Xiang, Weining.(2016).Estimation and uncertainty analyses of grassland biomass in Northern China: Comparison of multiple remote sensing data sources and modeling approaches.ECOLOGICAL INDICATORS,60,1031-1040.
MLA Jia, Wenxiao,et al."Estimation and uncertainty analyses of grassland biomass in Northern China: Comparison of multiple remote sensing data sources and modeling approaches".ECOLOGICAL INDICATORS 60(2016):1031-1040.
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