A fine spatial resolution estimation scheme for large-scale gross primary productivity (GPP) in mountain ecosystems by integrating an eco-hydrological model with the combination of linear and non-linear downscaling processes
文献类型:期刊论文
作者 | Xie, Xinyao4,5; Li, Ainong1,4,5; Tian, Jie3,5; Wu, Changlin2,5; Jin, Huaan5 |
刊名 | JOURNAL OF HYDROLOGY |
出版日期 | 2023 |
卷号 | 616页码:12 |
ISSN号 | 0022-1694 |
关键词 | Gross primary productivity Fine spatial resolution Eco-hydrological models Surface heterogeneity Spatial downscaling |
DOI | 10.1016/j.jhydrol.2022.128833 |
英文摘要 | Accurate estimation of mountain vegetation gross primary productivity (GPP) at fine spatial resolutions offers opportunities to better understand mountain ecosystems' feedback to the global climate system. Eco-hydrological models have great advantages in simulating mountain vegetation photosynthesis, but their large-scale applications remain challenging at fine spatial resolutions due to the computing resources. In this work, a scheme by integrating an eco-hydrological model called Boreal Ecosystem Productivity Simulator-TerrainLab (BTL) with the linear and non-linear downscaling processes, was developed to obtain large-scale mountain vegetation GPP at the 30 m resolution over four watersheds. Firstly, two coarse spatial resolution GPP were simulated by BTL at 480 m and 120 m. Then, the 30 m resolution GPP was estimated by a linear downscaling process modelled at 120 m and a non-linear downscaling process modelled from 480 m to 120 m. The 30 m resolution BTL-simulated GPP was served as reference for evaluation. Results showed that the Root-Mean-Square-Error (RMSE) after downscaling was decreased by 110 gCm(-2)year(-1) compared to the 120 m resolution BTL-simulated GPP (500 gCm(-2) year(-1)) at the 30 m resolution, highlighting the effectiveness of the proposed scheme in recovering the topographic Variations of mountain vegetation GPP at fine spatial resolutions. Compared to the 120 m resolution BTL-simulated GPP (351 gCm(-2) year(-1)), RMSE after downscaling was decreased by 156 gCm(-2) year(-1) at the 120 m resolution, indicating that the proposed scheme is feasible in correcting GPP errors at coarse spatial resolutions. More specifically, the non-linear downscaling process was observed to effectively improve GPP estimates after linear downscaling, suggesting that the spatial scaling errors in coarse estimates should be considered in the downscaling process. Our study indicates that the scheme that runs eco-hydrological models at coarse resolutions and then downscales them by surface heterogeneity is a practical approach for obtaining large-scale mountain vegetation GPP at fine spatial resolutions. |
WOS关键词 | LEAF-AREA INDEX ; ENHANCED VEGETATION INDEX ; LAND-SURFACE TEMPERATURE ; CARBON-DIOXIDE ; CANADA FORESTS ; SOIL-MOISTURE ; CO2 FLUXES ; WATER ; ENERGY ; EVAPOTRANSPIRATION |
资助项目 | National Key Research and Development Program of China[2020YFA0608702] ; National Natural Science Foundation of China[42201418] ; Postdoctoral Science Foundation of China[2021M700139] ; Chinese Academy of Sciences Special Research Assistant Program ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDA19030303] |
WOS研究方向 | Engineering ; Geology ; Water Resources |
语种 | 英语 |
出版者 | ELSEVIER |
WOS记录号 | WOS:000895782900002 |
资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Postdoctoral Science Foundation of China ; Chinese Academy of Sciences Special Research Assistant Program ; Strategic Priority Research Program of the Chinese Academy of Sciences |
源URL | [http://ir.imde.ac.cn/handle/131551/57037] |
专题 | 成都山地灾害与环境研究所_数字山地与遥感应用中心 |
通讯作者 | Li, Ainong |
作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, 9,4 Sect Renminnanlu, Chengdu 610041, Peoples R China 2.Changan Univ, Coll Geol Engn & Geomat, Xian 710054, Peoples R China 3.Southwest Petr Univ, Sch Civil Engn & Geomat, Chengdu 610500, Peoples R China 4.WangLang Mt Remote Sensing Observat & Res Stn Sich, Mianyang 621000, Peoples R China 5.Chinese Acad Sci, Inst Mt Hazards & Environm, Res Ctr Digital Mt & Remote Sensing Applicat, Chengdu 610041, Peoples R China |
推荐引用方式 GB/T 7714 | Xie, Xinyao,Li, Ainong,Tian, Jie,et al. A fine spatial resolution estimation scheme for large-scale gross primary productivity (GPP) in mountain ecosystems by integrating an eco-hydrological model with the combination of linear and non-linear downscaling processes[J]. JOURNAL OF HYDROLOGY,2023,616:12. |
APA | Xie, Xinyao,Li, Ainong,Tian, Jie,Wu, Changlin,&Jin, Huaan.(2023).A fine spatial resolution estimation scheme for large-scale gross primary productivity (GPP) in mountain ecosystems by integrating an eco-hydrological model with the combination of linear and non-linear downscaling processes.JOURNAL OF HYDROLOGY,616,12. |
MLA | Xie, Xinyao,et al."A fine spatial resolution estimation scheme for large-scale gross primary productivity (GPP) in mountain ecosystems by integrating an eco-hydrological model with the combination of linear and non-linear downscaling processes".JOURNAL OF HYDROLOGY 616(2023):12. |
入库方式: OAI收割
来源:成都山地灾害与环境研究所
其他版本
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。