气候变化领域集成服务门户(CCPortal): Improvement of the Irrigation Scheme in the ORCHIDEE Land Surface Model and Impacts of Irrigation on Regional Water Budgets Over China

CCPortal

DOI	10.1029/2019MS001770
	Improvement of the Irrigation Scheme in the ORCHIDEE Land Surface Model and Impacts of Irrigation on Regional Water Budgets Over China
	Yin Z.; Wang X.H.; Ottlé C.; Zhou F.; Guimberteau M.; Polcher J.; Peng S.S.; Piao S.L.; Li L.; Bo Y.; Chen X.L.; Zhou X.D.; Kim H.; Ciais P.
发表日期	2020
ISSN	19422466
卷号	12 期号:4
英文摘要	In China, irrigation is widespread in 40.7% cropland to sustain crop yields. By its action on water cycle, irrigation affects water resources and local climate. In this study, a new irrigation module, including flood and paddy irrigation technologies, was developed in the ORCHIDEE-CROP land surface model which describes crop phenology and growth in order to estimate irrigation demands over China from 1982 to 2014. Three simulations were performed including NI (no irrigation), IR (with irrigation limited by local water resources), and FI (with irrigation demand fulfilled). Observations and census data were used to validate the simulations. Results showed that the estimated irrigation water withdrawal ((Formula presented.)) based on IR and FI scenarios bracket statistical (Formula presented.) with fair spatial agreements ((Formula presented.); (Formula presented.)). Improving irrigation efficiency was found to be the dominant factor leading to the observed (Formula presented.) decrease. By comparing simulated total water storage (TWS) with GRACE observations, we found that simulated TWS with irrigation well explained the TWS variation over China. However, our simulation overestimated the seasonality of TWS in the Yangtze River Basin due to ignoring regulation of artificial reservoirs. The observed TWS decrease in the Yellow River Basin caused by groundwater depletion was not totally captured in our simulation, but it can be inferred by combining simulated TWS with census data. Moreover, we demonstrated that land use change tended to drive (Formula presented.) locally but had little effect on total (Formula presented.) over China due to water resources limitation. ©2020. The Authors.
英文关键词	crops; irrigation model; irrigation water withdrawal; local climate; paddy irrigation; total water storage
语种	英语
scopus关键词	Budget control; Crops; Digital storage; Forestry; Groundwater; Irrigation; Land use; Population statistics; Reservoirs (water); Surface measurement; Surveys; Water supply; Watersheds; Artificial reservoirs; Groundwater depletion; Irrigation efficiency; Irrigation schemes; Irrigation waters; Land surface modeling; Yangtze River basin; Yellow River basin; Water resources; agricultural land; census; crop yield; demand analysis; GRACE; groundwater abstraction; hydrological cycle; irrigation system; land surface; land use change; phenology; resource depletion; seasonality; water storage; China; Yangtze Basin; Yellow River Basin
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156735
作者单位	Laboratoire des Sciences du Climat et de l'Environnement, IPSL, CNRS-CEA-UVSQ, Gif-sur-Yvette, France; Laboratoire de Météorologie Dynamique, IPSL UPMC/CNRS, Paris, France; Sino-French Institute for Earth System Science, College of Urban and Environmental Sciences, Peking University, Beijing, China; UMR 7619 METIS, IPSL, Sorbonne Universités, UPMC, CNRS, EPHE, Paris, France; Key Laboratory of Tibetan Environment Changes and Land Surface Processes, Institute of Tibetan Plateau Research, Chinese Academy of Sciences, Beijing, China; CAS Center for Excellence in Tibetan Plateau Earth Sciences, Beijing, China; State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Center for Global Change and Water Cycle, Hohai University, Nanjing, China; Institute of Industrial Science, The University of Tokyo, Tokyo, Japan
推荐引用方式 GB/T 7714	Yin Z.,Wang X.H.,Ottlé C.,et al. Improvement of the Irrigation Scheme in the ORCHIDEE Land Surface Model and Impacts of Irrigation on Regional Water Budgets Over China[J],2020,12(4).
APA	Yin Z..,Wang X.H..,Ottlé C..,Zhou F..,Guimberteau M..,...&Ciais P..(2020).Improvement of the Irrigation Scheme in the ORCHIDEE Land Surface Model and Impacts of Irrigation on Regional Water Budgets Over China.Journal of Advances in Modeling Earth Systems,12(4).
MLA	Yin Z.,et al."Improvement of the Irrigation Scheme in the ORCHIDEE Land Surface Model and Impacts of Irrigation on Regional Water Budgets Over China".Journal of Advances in Modeling Earth Systems 12.4(2020).