Arid
DOI10.1016/j.jhydrol.2017.05.060
Impact of vegetation dynamics on hydrological processes in a semi-arid basin by using a land surface-hydrology coupled model
Jiao, Yang1; Lei, Huimin1; Yang, Dawen1; Huang, Maoyi2; Liu, Dengfeng3; Yuan, Xing4
通讯作者Lei, Huimin
来源期刊JOURNAL OF HYDROLOGY
ISSN0022-1694
EISSN1879-2707
出版年2017
卷号551页码:116-131
英文摘要

Land surface models (LSMs) are widely used to understand the interactions between hydrological processes and vegetation dynamics, which is important for the attribution and prediction of regional hydrological variations. However, most LSMs have large uncertainties in their representations of eco-hydrological processes due to deficiencies in hydrological parameterizations. In this study, the Community Land Model version 4 (CLM4) LSM was modified with an advanced runoff generation and flow routing scheme, resulting in a new land surface-hydrology,coupled model, CLM-GBHM. Both models were implemented in the Wudinghe River Basin (WRB), which is a semi-arid basin located in the middle reaches of the Yellow River, China. Compared with CLM, CLM-GBHM increased the Nash Sutcliffe efficiency for daily river discharge simulation (1965-1969) from-0.03 to 0.23 and reduced the relative bias in water table depth simulations (2010-2012) from 32.4% to 13.4%. The CLM-GBHM simulations with static, remotely sensed and model-predicted vegetation conditions showed that the vegetation in the WRB began to recover in the 2000s due to the Grain for Green Program but had not reached the same level of vegetation cover as regions in natural eco-hydrological equilibrium. Compared with a simulation using remotely sensed vegetation cover, the simulation with a dynamic vegetation model that considers only climate-induced change showed a 10.3% increase in evapotranspiration, a 47.8% decrease in runoff, and a 62.7% and 71.3% deceleration in changing trend of the outlet river discharge before and after the year 2000, respectively. This result suggests that both natural and anthrojJogenic factors should be incorporated in dynamic vegetation models to better simulate the eco-hydrological cycle. (C) 2017 Elsevier B.V. All rights reserved.


英文关键词Eco-hydrological modeling Model coupling Vegetation dynamics Regional hydrological change
类型Article
语种英语
国家Peoples R China ; USA
收录类别SCI-E
WOS记录号WOS:000407538800011
WOS关键词YANGTZE-RIVER BASIN ; EARTH SYSTEM MODELS ; LOESS-PLATEAU ; CLIMATE-CHANGE ; STOMATAL CONDUCTANCE ; TEMPORAL VARIATION ; YELLOW-RIVER ; RUNOFF ; CHINA ; STREAMFLOW
WOS类目Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向Engineering ; Geology ; Water Resources
来源机构中国科学院大气物理研究所 ; 清华大学
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/200586
作者单位1.Tsinghua Univ, State Key Lab Hydrosci & Engn, Dept Hydraul Engn, Beijing 100084, Peoples R China;
2.Pacific Northwest Natl Lab, Atmospher Sci & Global Change Div, Richland, WA USA;
3.Xian Univ Technol, State Key Lab Base Ecohydraul Engn Arid Area, Xian 710048, Shaanxi, Peoples R China;
4.Chinese Acad Sci, RCE TEA, Inst Atmospher Phys, Beijing 100029, Peoples R China
推荐引用方式
GB/T 7714
Jiao, Yang,Lei, Huimin,Yang, Dawen,et al. Impact of vegetation dynamics on hydrological processes in a semi-arid basin by using a land surface-hydrology coupled model[J]. 中国科学院大气物理研究所, 清华大学,2017,551:116-131.
APA Jiao, Yang,Lei, Huimin,Yang, Dawen,Huang, Maoyi,Liu, Dengfeng,&Yuan, Xing.(2017).Impact of vegetation dynamics on hydrological processes in a semi-arid basin by using a land surface-hydrology coupled model.JOURNAL OF HYDROLOGY,551,116-131.
MLA Jiao, Yang,et al."Impact of vegetation dynamics on hydrological processes in a semi-arid basin by using a land surface-hydrology coupled model".JOURNAL OF HYDROLOGY 551(2017):116-131.
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