IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Measurement of evapotranspiration of mixed bush and grass in headwater region of North China Plain
Language英语
Fadong Li; Qiuying Zhang(张秋英); Kechang Gao(高克昌); Zhongqi Xu; Xianfang Song
Corresponding AuthorFadong Li
2005
Source Publication25th IEEE International Geoscience and Remote Sensing Symposium (IGARSS 2005) ; IGARSS 2005: IEEE International Geoscience and Remote Sensing Symposium, Vols 1-8, Proceedings
Conference Date2005-6--25~29
Conference PlaceSeoul, SOUTH KOREA
Funding OrganizationIEEE
AbstractBowen ratio and energy balance (BREB) method is used to measure the evapotranspiration of mixed bush and grass in headwater re,lion of North China Plain. The results show that it is hard to observe the long-term data by BREB. To analyze the diurnal variation in the energy balance, three days (DOY 225, clear day. DOY 228, cloudy, fog in the morning, and 0.2mm of Precipitation, DOY 236, cloudy) in 2001 are selected from the growing period of vegetation. Actual evapotranspiration is 4.13, 0.95, and 3.38 mm/day, with mean value of 2.82 mm/day. Peak hourly ET is 0.66 mm/hour. Bowen ratio is 0.28, 0.30, and 0.35 on DOY 225, 228, and 236, respectively. The daily ET0 calculated by hourly Penmen-Monteith mothod on DOY 225, 228, and 236 is 4.68, 1.04, and 3.54 mm/day. Crop coefficient (Kc) is 0.88, 0.92, and 0.96, respectively. The variation of Kc is in agreement with the ET in clear day.
KeywordEvapotranspiration Bowen Ratio Penman-monteith Method Crop Coefficient
Document Type会议论文
Identifierhttp://ir.imde.ac.cn/handle/131551/5355
Collection成都山地所知识仓储(2009年以前)
Corresponding AuthorFadong Li
Recommended Citation
GB/T 7714
Fadong Li,Qiuying Zhang,Kechang Gao,et al. Measurement of evapotranspiration of mixed bush and grass in headwater region of North China Plain[C],2005.
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