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.; Ottle, 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.
通讯作者	Yin, Z ; Wang, XH (通讯作者)
发表日期	2020
EISSN	1942-2466
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 (W) based on IR and FI scenarios bracket statisticalW with fair spatial agreements (r = 0.68 +/- 0.07; p < 0.01). Improving irrigation efficiency was found to be the dominant factor leading to the observedW 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 W locally but had little effect on total W over China due to water resources limitation.
关键词	EARTH SYSTEM MODELS CLIMATE-CHANGE WINTER-WHEAT RESOURCE MANAGEMENT GLOBAL IRRIGATION DATA SET REPRESENTATION BALANCE YIELD TEMPERATURE
语种	英语
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
WOS记录号	WOS:000538038300001
来源期刊	JOURNAL OF ADVANCES IN MODELING EARTH SYSTEMS
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/260107
推荐引用方式 GB/T 7714	Yin, Z.,Wang, X. H.,Ottle, 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]. 中国科学院青藏高原研究所,2020,12(4).
APA	Yin, Z..,Wang, X. H..,Ottle, 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).