中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 地理科学与资源研究所
  3. 中国科学院地理科学与资源研究所
Spatially Explicit Modeling of Coupled Water and Carbon Processes Using a Distributed Ecohydrological Model in the Upper Heihe Watershed, China

文献类型：期刊论文

作者Jin, Huiyu1,2; Chen, Baozhang1,2,3,4; Sun, Shaobo5; Zhang, Huifang2,3; Measho, Simon2,3; Lin, Xiaofeng2,3; Guo, Lifeng1,2,3
刊名WATER
出版日期2019-06-01
卷号11期号:6页码:17
关键词coupled water-carbon processes hydro-ecological modeling lateral water fluxes evapotranspiration photosynthesis
ISSN号2073-4441
DOI10.3390/w11061242
通讯作者Chen, Baozhang(baozhang.chen@igsnrr.ac.cn)
英文摘要A fully coupled simulation of ecophysiological, hydrological and biochemical processes is significant for better understanding the individual and interactional impact of sophisticated land surface processes under future disturbances from nature and human beings. In this study, we spatially explicitly modelled evapotranspiration (ET) and photosynthesis (GPP) using a distributed hydrological model, Dynamic Land Model DLM-Ecohydro, over the Upper Heihe watershed for the years of 2013 and 2014. After considering the lateral water movements, the model fairly captured the variations in ET (R-2 = 0.82, RMSE = 1.66 mm/day for 2013; R-2 = 0.83, RMSE = 1.53 mm/day for 2014) and GPP (R-2 = 0.71, RMSE = 5.25 gC/m(2)/day for 2013; R-2 = 0.81, RMSE = 3.38 gC/m(2)/day for 2014) compared with the measurements from the Arou monitoring station. Vegetation transpiration accounted for total ET of around 65% and 64% in 2013 and 2014, respectively. A large spatial variability was found in these two indicators (14.30-885.36 mm/year for annual ET and 0-2174 gC/m(2)/day for annual GPP) over the watershed. Soil texture and vegetation functional types were the major factors affecting ET and GPP spatial variability, respectively. The study manifested a coupled water-carbon mechanism through the strong linear relationship between the variations in ET and GPP and the control of hydrological processes on the carbon cycle at the watershed scale. Although the model had a reasonable performance during most parts of the growing seasons, the lack of a soil freezing-thawing scenario caused inevitable discrepancies for the simulation of soil water and heat transfer mechanisms, hence inaccurately estimating the biophysiological processes in the transition period of winter to spring, which should be further improved especially for alpine regions.
WOS关键词USE EFFICIENCIES ; EDDY-COVARIANCE ; PHOTOSYNTHESIS ; ECOSYSTEM ; SOIL ; FOREST ; LEAF ; LANDSCAPE ; BALANCE ; CANOPY
资助项目National Key R&D Program of China[2018YFA0606001] ; National Key R&D Program of China[2017YFA0604301] ; National Key R&D Program of China[2017YFA0604302] ; National Key R&D Program of China[2017YFC0503904] ; international partnership program of Chinese Academy of Sciences[131A11KYSB20170025] ; State Key Laboratory of Resources and Environmental Information System[O88RA901YA] ; State Key Laboratory of Resources and Environmental Information System[O8R8A085YA] ; National Natural Science Foundation of China[41771114]
WOS研究方向Water Resources
语种英语
WOS记录号WOS:000475346300130
出版者MDPI
资助机构National Key R&D Program of China ; international partnership program of Chinese Academy of Sciences ; State Key Laboratory of Resources and Environmental Information System ; National Natural Science Foundation of China
源URL[http://ir.igsnrr.ac.cn/handle/311030/58233]  
专题中国科学院地理科学与资源研究所
通讯作者Chen, Baozhang
作者单位1.Nanjing Univ Informat Sci & Technol, Sch Remote Sensing & Geomat Engn, Nanjing 210044, Jiangsu, Peoples R China
2.Chinese Acad Sci, State Key Lab Resources & Environm Informat Syst, Inst Geog Sci & Nat Resources Res, 11A Datun Rd, Beijing 100101, Peoples R China
3.Univ Chinese Acad Sci, Coll Resources & Environm, 19A Yuquan Rd, Beijing 100049, Peoples R China
4.Jiangsu Ctr Collaborat Innovat Geog Informat Reso, Nanjing 210023, Jiangsu, Peoples R China
5.Tianjin Univ, Inst Surface Earth Syst Sci, Tianjin 300072, Peoples R China
推荐引用方式
GB/T 7714		 Jin, Huiyu,Chen, Baozhang,Sun, Shaobo,et al. Spatially Explicit Modeling of Coupled Water and Carbon Processes Using a Distributed Ecohydrological Model in the Upper Heihe Watershed, China[J]. WATER,2019,11(6):17.
APA Jin, Huiyu.,Chen, Baozhang.,Sun, Shaobo.,Zhang, Huifang.,Measho, Simon.,...&Guo, Lifeng.(2019).Spatially Explicit Modeling of Coupled Water and Carbon Processes Using a Distributed Ecohydrological Model in the Upper Heihe Watershed, China.WATER,11(6),17.
MLA Jin, Huiyu,et al."Spatially Explicit Modeling of Coupled Water and Carbon Processes Using a Distributed Ecohydrological Model in the Upper Heihe Watershed, China".WATER 11.6(2019):17.

入库方式： OAI收割

来源：地理科学与资源研究所

浏览0
下载0
收藏0
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。